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US3879573A - Electrical device handle and protector therefor - Google Patents

Electrical device handle and protector therefor Download PDF

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Publication number
US3879573A
US3879573A US421983A US42198373A US3879573A US 3879573 A US3879573 A US 3879573A US 421983 A US421983 A US 421983A US 42198373 A US42198373 A US 42198373A US 3879573 A US3879573 A US 3879573A
Authority
US
United States
Prior art keywords
tubular
handle
connector
tubular member
extending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US421983A
Other languages
English (en)
Inventor
Stephen Jeffrey Ehrlich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Black and Decker Corp
Original Assignee
Black and Decker Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Black and Decker Manufacturing Co filed Critical Black and Decker Manufacturing Co
Priority to US421983A priority Critical patent/US3879573A/en
Priority to CA211,403A priority patent/CA1011364A/en
Priority to FR7437747A priority patent/FR2253978B3/fr
Priority to DE7439870*[U priority patent/DE7439870U/de
Application granted granted Critical
Publication of US3879573A publication Critical patent/US3879573A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/06—Hand-held edge trimmers or shears for lawns
    • A01G3/062—Motor-driven edge trimmers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/06—Hand-held edge trimmers or shears for lawns
    • A01G3/067—Motor-driven shears for lawns
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L7/00—Supporting pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S15/00—Brushing, scrubbing, and general cleaning
    • Y10S15/10—Handles, reels and switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7047—Radially interposed shim or bushing
    • Y10T403/7061—Resilient
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/70—Interfitted members
    • Y10T403/7075—Interfitted members including discrete retainer
    • Y10T403/7077—Interfitted members including discrete retainer for telescoping members
    • Y10T403/7079—Transverse pin
    • Y10T403/7084—Bolt, rivet, or screw

Definitions

  • a protective connector for an electrical device handle, and the handle formed therewith, are disclosed wherein the connector is formed of two longitudinally aligned portions of different outside diameters with a passageway extending longitudinally throughout the length of the connector to receive electrical wires, the connector being adapted to be mounted within a tubular member and also being adapted to receive a second tubular member effectively joining the tubular member with the smaller portion of the connector being spaced from the inner surface of the first tubular member and defining an annular passageway therebetween.
  • An air inlet is provided through the first tubular member in communication with the passageway.
  • an elongated handle having one end thereof adjacent to an electrical motor wherein the handle also serves as a conduit for electrical wires to lead the wires safely away from the motor and tool which the motor drives, for example, to lead the wires to a hand grip and adjacent control switch for the device.
  • the elongated handle of a plurality of different sized members.
  • the elongated handle often is formed of two tubular pieces one of which is relatively large in diameter to facilitate through flow of motor cooling air, as will be described, while the other is significantly smaller in cross-section to, among other things, save in materials cost and for appearance purposes. To connect these handle members.
  • Electrical motor devices of the type referred to generally include a motor cooling fan to insure adequate motor life.
  • the motor With certain devices, such as the power operated lawn trimmer-edger, referred to above, the motor is located adjacent the ground, and the tool, during operation, produces a substantial amount of dirt and debris in the immediate vicinity of the motor. Because of this dirt and debris and because of the moisture which often exists on the grass, it is undesirable to draw cooling air into the motor from the area immediately adjacent thereto since this would result in contamination of the motor and other parts of the appliance. Consequently, motor cooling air is generally drawn through inlets provided in the handle remote from the motor and the motor driven tool, and this air is then caused to flow downwardly through the handle, and then through the motor. with this arrangement, it is necessary to protect the wires within the tubular handle to eliminate the possibility of a probe, e.g., nails or other sharp objects, from being inserted in the air inlets and possibly puncturing or damaging the wire insula tion.
  • a probe e.g., nails or other sharp objects
  • the protective connector for an electrical device handle comprises first and second longitudinally aligned portions, the second portion having at least a longitudinal section recessed radially with respect to the other surface of the first portion, a passageway extending longitudinally through the first and second portions adapted to receive an electrical line cord therin, the first portion adapted to receive a first tubular handle member and the second portion adapted to be mounted within a second tubular handle member.
  • the connector includes a plurality of circumferentially spaced projections extending outwardly from the second portion. It is also preferred that the connector be formed of two halves joined together along a parting line with the second portion of each half having at least one finger on the outer surface thereof extending across the parting line and overlapping the other half of the second portion.
  • the invention also comprises an electrical device handle including first tubular member having an air inlet therethrough, a second tubular member and a protective connector having first and second longitudinally aligned tubular portions, the first tubular portion having a larger outside diameter than the second tubular portion, the second tubular portion being fitted within the first tubular member and one end of the second tu bular member being fitted within the first tubular portion, the outside diameter of the second tubular portion being smaller than the inside diameter of the first tubular member defining a passageway therebetween, the passageway communicating with the air inlet, the connector being adapted to receive an electrical line cord extending throughout the length thereof.
  • the handle also includes a plurality of projections extending from the outer surface of the second portion of the connector to position the second portion spaced from the first tubular member.
  • FIG. 1 illustrates a perspective view of a typical garden tool, namely a lawn trimmer-edger, having an elongated tubular handle including a protective connector formed in accordance with this invention.
  • FIG. 2 is a perspective view of a protective connector formed, in accordance with one embodiment of this invention, of two hingedly connected parts and shown as a blank in its open position.
  • FIG. 3 is a perspective view of the connector of FIG. 2 illustrated in a closed position.
  • FIG. 4 is a sectional view of two handle sections, one of which contains a protective connector formed in accordance with this invention and illustrating the alignment of parts prior to assembly of the handle.
  • FIG. 5 illustrates the sections of the handle of FIG. 4 after assembly.
  • FIG. 6 is a sectional view taken along line 6-6 of FIG. 4.
  • FIG. 7 is a sectional view taken along line 77 of FIG. 5.
  • the handle and protective connector of this invention may be used with many different types of electrical devices.
  • One particular type of electrical device for which it is particularly suitable is a lawn tool, such as a trimmer-edger 10, shown in FIG. 1.
  • a lawn tool such as a trimmer-edger 10
  • the handle of this invention is shown and described for use with the trimmer-edger 10; however, it is clear that no limitations are intended by describing the use of the handle in connection with only a single device.
  • the handle includes a plurality of tubular members and a connector for receiving the tubular members. the connector also providing a tubular passageway through which electrical wires pass.
  • a handle 12 is adapted for attachment at one end 14 to the motor housing 16 of an appliance, for example, a lawn trimmer-edger 10.
  • the handle 12 terminates in a hand grip 17 at its upper end, the grip having a convenient on-off trigger switch 19 provided thereon.
  • the handle 12 also serves as a conduit to contain and safely lead electrical wires 21, 23 safely away from the appliance motor housing 16 and tool which the motor drives, such as a rotary blade (not shown), thereby keeping the wire away from the working portion of the appliance l0.
  • Wires 21, 23 form a line cord 18 which, through switch 19, is connected to a suitable electric source for powering the device 10.
  • the handle 12 is formed of a plurality of tubular members 20, 22, one member 20 may have a smaller diameter than the other member 22 permitting it to be telescopically inserted therein.
  • the handle also includes a connector 24 which is in part received within the larger tubular member 22 and which receives within it the smaller tubular member 20.
  • the connector 24, shown in a preferred form in FIGS. 2 and 3, is formed of two almost symmetrical halves 26, 28, which have projections 30, 32 respectively extending radially therefrom.
  • the projections 30, 32 are joined together at their distal end along a hinge line 33 resulting in a one-piece integral connector 24 which may be folded upon itself, meeting on the parting surfaces 34, 35 to form a tubular connector as shown in FIG. 3.
  • the tubular connector 24 has a first channel or tubular portion 36 and a second channel or tubular portion 38 of smaller diameter than the first portion 36.
  • the first and second tubular portions are joined together by a wall 39 which can be radial or inclined with respect to the connector axis.
  • the end 44 of the larger tubular portion 36 remote from the smaller tubular portion 38 is formed with an outwardly extending shoulder 46.
  • the larger tubular portion 36 is also provided with a pair of diametrically opposed elongated apertures or slots 48, 50 to serve as bolt holes for fixedly connecting the handle tubular members 20, 22 together.
  • the connector 24 is inserted within the larger tubular member 22 so that the shoulder 46 abuts against the end 52 of the tubular member 22 thereby controlling the depth to which the connector 24 is inserted and also capping the end 52 of the tubular member 22 to provide protection against any burrs that might exist on the end 52.
  • the slots 48, 50 are aligned with bolt holes 54, 56 provided through the larger tubular member 22.
  • the outer diameter of the larger tubular portion 36 is slightly less than or preferably substantially equal to the internal diameter of the larger tubular member 22.
  • the spacers 40, 42 and the projections 30, 32 are substantially equal to the difference in radius between the smaller tubular portion 38 and the larger tubular portion 36, the spacers and extensions contact the interior surface of the tubular member 22 and retain the connector 24 in place preventing radial movement thereof. (See FIG. 6).
  • the internal surface of the tubular member 22 and the external surface of the tubular portion 38 of the connector 24 define an annular air passageway 60 which is terminated by the radial wall 39 between the smaller tubular portion 38 and the larger tubular portion 36.
  • Air inlets 64 are provideed through the tubular member 22 at a location aligned with the smaller tubular portion 38 of the connector 24. Air entering the inlets 64 passes downwardly through the tubular member 22 toward the housing 16 of the appliance.
  • This air flow is effected by suitable means such as by a motor driven fan within the housing 16 and is discharged from the motor housing after passing through the motor.
  • suitable means for producing air flow is conventional, does not form a part of this invention and is not shown.
  • the handle member 22 has a relatively large I. D. to accommodate line cord 18 and permit adequate flow of motor cooling air therethrough.
  • handle member 20 desirably is somewhat smaller since it need only accommodate the line cord 18.
  • connector 24 serves as a transitional member between members 20, 22 and eliminates the costly swage.
  • connector 24 caps the end of member 22 to prevent damaging abrasion to line cord 18 during shipping when handle members 20, 22 are customarily disassembled for compact packaging.
  • the electrical line cord 18 passes from the housing 16, through the larger tubular member 22, through the connector 24 and then through the smaller tubular member 20, as can be seen in FIG. 4.
  • the smaller tubular portion 38 of the connector 24 completely encloses the line cord 18 circumferentially preventing any foreign object, such as a nail or probe being inserted through the air inlets 64 from contacting the line cord 18.
  • the connector 24 is also provided with a plurality of fingers 66, some of which are mounted on the first member 26 and some of which are mounted on the second member 28 in such a fashion that the fingers extend forwardly from the edge of each of these members and overlap the other corresponding member when the connector 24 is folded together as shown in FIG. 3.
  • the fingers 66 serve to prevent the tubular portion 38 from collapsing in the event a probe or other element is forcibly inserted in air inlet 64 and against the connector 24.
  • the second or smaller tubular member is inserted within the larger tubular portion 36 of the connector 24 so that bolt holes 68, 70 provided therethrough are aligned with the bolt holes 54, 56 respectively in the first tubular member 22 and the slots 48, 50 in the connector.
  • Bolts 72 are then inserted through the bolt holes and slots to fixedly interconnect the tubular members 20, 22 and connector 24.
  • the line cord 18 extends from the housing 16 through the tubular members 20, 22 and out through the hand grip 17 as can be seen in FIG. 1.
  • the connector 24 has been designed so that it may be easily and inexpensively manufactured, for example it may be molded from a suitable plastic such as polypropylene. However, other methods of manufacturing the connector and other materials are also contemplated including stamping it out of sheet metal. It is also contemplated that the connector 24 could be formed as an integral sleeve without hinged portions or, in other words, it could be formed in the shape illustrated in FIG. 3.
  • the protective connector and the handle incorporating the connector formed in accordance with this invention, facilitate the assembly of handle sections and eliminate the need to swage and deburr the ends of the handle sections as well as eliminating the use of a throwaway protective grommet formerly mounted over the ends of the handle sections to prevent cutting the wire. Furthermore, the electrical wire is protected in the vicinity of the air inlets against being contacted by probes or other objects inserted in the air inlet.
  • An electrical device handle comprising:
  • a protective connector having first and second longitudinally aligned tubular portions, said first portion having larger outside diameter than said second portion, said second tubular portion being fitted within said first tubular member and one end of said second tubular member being fitted within said first tubular portion, the outside diameter of said second tubular portion being smaller than the inside diameter of said first tubular member defining a passageway therebetween, said passageway communicating with said air inlet, said connector being adapted to receive an electrical wire extending throughout the length thereof.
  • An electrical device handle defined in claim 1 including a plurality of projections extending from the outer surface of said second portion positioning said second portion spaced from said first tubular member.
  • An electrical device handle comprising:
  • a protective connector having first and second longitudinally aligned tubular portions, said first tubular portion having a larger outside diameter than said second tubular portion, said first and second portions of said connector mounted within said first tubular member and one end of said second tubular member being mounted within said first tubular portion, the outside diameter of said second tubular portion being smaller than the inside diameter of said first tubular member defining a passageway therebetween in communication with said air inlet, a plurality of circumferentially spaced projections extending from the outer surface of said second tubular portion maintaining said second tubular portion spaced from said first tubular member, and
  • An electrical device handle as defined in claim 4 including a shoulder extending outwardly from said first tubular portion against which one end of said first tubular member abuts.
  • An electrical device handle as defined in claim 4 including first diametrically opposed holes through said first tubular member, second diametrically opposed holes through said second tubular member and third diametrically opposed holes through said connector, and joining means extending through said first, second and third holes.
  • An electrical device handle comprising:
  • a protective connector having first and second longitudinally aligned tubular portions, at least a section of said second tubular portion being radially recessed with respect to the outer surface of said first tubular portion and at least a part of said first tubular portion being mounted within said first tubular member with said section aligned with said air inlet, one end of said second tubular member mounted within said first tubular portion;
  • a handle for use with an electrically powered garden tool comprising:
  • a protective connector having a first portion and a second portion axially aligned with and having a smaller outside diameter than said first portion, said first and second portions being mounted within said first member, a shoulder extending outwardly from said first portion against which the other end of said first tubular member abuts, one end of said second tubular member being received within said first portion, and
  • a handle as defined in claim 8 including a plurality of projections extending outwardly from said second portion maintaining said second portion spaced from said first member.
  • a handle as defined in claim 9 including aligned holes through said first member, said first portion and said second member and attachment means extending through said holes fixedly interconnecting said first member, connector and said second member.
  • an electrical device comprising a housing for an electric motor and driven output means, a hand grip portion including an electric switch, a multisection tubular handle extending between and connected to said housing and said hand grip, and a plurality of electric wires extending within said handle
  • the improvement comprising a protective connector joining consecutive sections of said multi-section tubular handle, said connector comprising first and second longitudinally aligned portions, said second portion having at least a longitudinal section recessed radially with respect to the outer surface of said first portion, a passageway extending longitudinally through said first and second portions receiving said electrical wires therein, said first portion receiving a first section of said tubular handle and said second portion being mounted within a second section of said tubular handle.
  • an electrical device comprising a housing for an electric motor and driven output means, a hand grip portion including an electric switch, a multi-section tubular handle extending between and connected to said housing and said hand grip, and a plurality of electric wires extending within said handle, the improvement comprising a protective connector joining adjacent sections of said tubular handle, said connector comprising first and second longitudinally aligned portions, said first portion having a larger outside diameter than said second portion, a plurality of circumferentially spaced projections extending outwardly from said second portion, said first and second portions including a passageway therethrough which receives said electrical wires therein.
  • a protective connector for an electrical device handle comprising first and second axially aligned portions, said first portion having a larger outside diameter than said second portion, a plurality of circumferentially spaced projections extending outwardly from said second portion, the outer edge of said projections being substantially coplanar with the outer surface of said first portion, said first and second portions each being formed of two halves joined together along a parting line, said second portion of each half having at least one finger on the outer surface thereof extending tangentially across said parting line and overlapping the other half of said second portion, said first and second portions having a central opening therethrough adapted to receive an electrical wire extending throughout the length thereof.
  • an electrical device comprising a housing for an electric motor and driven output means, a hand grip portion including an electric switch, a multi-section tubular handle extending between and connected to said housing and said hand grip, and a plurality of electric wires extending within said handle, the improvement comprising a protective connectorjoining adjacent sections of said multi-section tubular handle, said connector comprising a first half and a second half, each of said halves having first and second longitudinally aligned channel portions, the outside transverse dimension of said first portion being larger than the corresponding dimension of said second portion, said first and second halves being joined together by hinge means, closure of said first and second halves together forming two longitudinally aligned tubular members having a longitudinal passageway therethrough receiving said wires.
  • an electrical device comprising a housing for an electric motor and driven output means, a hand grip portion including an electric switch, a multi-section tubular handle extending between and connected to said housing and said hand grip, and a plurality of electric wires extending within said handle
  • said improvement comprising a protective connector joining adjacent sections of said multi-section tubular handle, said connector comprising a first half and a second half, each of said halves having first and second longitudinally aligned channel portions, the outside transverse dimension of said first portion being larger than the corresponding dimension of said second portion, said first and second halves each having a projection extending transversely from the second portion thereof, the distal end of the first half projection being joined to the distal end of the second half projection along a hinge line, closure of said first and second halves together along said hinge line forming two longitudinally aligned tubular members having a longitudinal passageway therethrough receiving said wires throughout the length thereof, said first and second channel portions of said connector being respectively joined with said adjacent sections of said tubular handle.
  • a blank for forming a protective connector for an electrical device handle having two parallel, spaced apart halves, each of said halves having first and second longitudinally aligned channel portions, the outside transverse dimension of the first portion being larger than the corresponding dimension of the second portion, said first and second halves each having a first projection extending transversely from the second portion thereof, the distal end of the first half first projection being joined to the distal end of the second half first projection along a hinge line, folding said blank along said hinge line effects closing said first half onto said second half, said halves meeting along matching parting surfaces and forming two longitudinally aligned tubular members having a longitudinal passageway therethrough for receipt of an electrical wire throughout the length thereof, each of said halves having at least one finger attached to the second portion thereof adjacent the parting surface and projecting outwardly to overlap the other half.
  • each second portion has a second projection extending therefrom spaced from said parting surface.
  • each of said first portions has an aperture therethrough, each of said apertures being spaced equally from its corresponding parting surface.
  • a blank for forming a protective connector for an electrical device handle having two parallel spaced apart halves, each of said halves having first and second longitudinally aligned semi-cylindrical portions, the outside diameter of the first portion being larger than the outside diameter of the second portion, said first and second halves each having a first projection extending transversely from the second portion thereof,
  • first and second halves each having a second projection extending from the second portion spaced from said first projection the distal end of said second projections being substantially coplanar with the outer surface of said first portion, folding said blank along said hinge line effects closing said first half onto said second half, said halves meeting along matching parting surfaces and forming two longitudinally aligned tubular members having a longitudinal passageway therethrough for receipt of an electrical wire throughout the length thereof, each of said halves having at least one finger attached to the second portion thereof adjacent the parting surface and projecting tangentially outwardly to overlap the other half, each of said first portions having an annular shoulder extending from the outer surface thereof.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Harvester Elements (AREA)
US421983A 1973-12-05 1973-12-05 Electrical device handle and protector therefor Expired - Lifetime US3879573A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US421983A US3879573A (en) 1973-12-05 1973-12-05 Electrical device handle and protector therefor
CA211,403A CA1011364A (en) 1973-12-05 1974-10-15 Electrical device handle and protector therefor
FR7437747A FR2253978B3 (de) 1973-12-05 1974-11-15
DE7439870*[U DE7439870U (de) 1973-12-05 1974-11-30 Verbindungselement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US421983A US3879573A (en) 1973-12-05 1973-12-05 Electrical device handle and protector therefor

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Publication Number Publication Date
US3879573A true US3879573A (en) 1975-04-22

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US421983A Expired - Lifetime US3879573A (en) 1973-12-05 1973-12-05 Electrical device handle and protector therefor

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US (1) US3879573A (de)
CA (1) CA1011364A (de)
DE (1) DE7439870U (de)
FR (1) FR2253978B3 (de)

Cited By (8)

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US4904827A (en) * 1989-01-30 1990-02-27 Harold Joseph Coleman Electric cord-protecting shipping plug
GB2245135A (en) * 1990-06-18 1992-01-02 Qualcast Garden Prod Folding handles
US5379846A (en) * 1993-01-07 1995-01-10 Black & Decker Inc. Electrical appliance and handle for same
EP0657255A1 (de) * 1993-12-10 1995-06-14 Black & Decker Inc. Elektrisch betriebenes Werkzeug
EP0703044A1 (de) * 1994-09-02 1996-03-27 Goblin Limited Verstellbare Verbindung
US5615970A (en) * 1994-10-20 1997-04-01 Black & Decker Inc. String trimmer having knock-down handle
US20140213325A1 (en) * 2011-08-29 2014-07-31 Nec Casio Mobile Communications, Ltd. Mobile terminal device
US20210146522A1 (en) * 2019-11-19 2021-05-20 Andreas Stihl Ag & Co. Kg Working Apparatus Having a Tubular Part and a Cable Arrangement, and Assembly Method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446964A (en) * 1993-07-22 1995-09-05 Wci Outdoor Products, Inc. Apparatus and method for packaging and assembling a flexible line trimmer
CN208144967U (zh) * 2017-03-31 2018-11-27 天佑电器（苏州）有限公司 吸尘器及用于容纳电机的电机座

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US1606833A (en) * 1923-02-12 1926-11-16 Aluminum Goods Mfg Co Handle for culinary utensils
US2679911A (en) * 1948-08-13 1954-06-01 Louise J B Hend Support for poles and the like
US2965426A (en) * 1959-01-07 1960-12-20 Empire Works Furniture leg adapter
US3199398A (en) * 1961-06-22 1965-08-10 Tibor Weisz Fixing plug
US3221481A (en) * 1963-08-19 1965-12-07 Sunbeam Corp Combination lawn edger and trimmer

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US1606833A (en) * 1923-02-12 1926-11-16 Aluminum Goods Mfg Co Handle for culinary utensils
US2679911A (en) * 1948-08-13 1954-06-01 Louise J B Hend Support for poles and the like
US2965426A (en) * 1959-01-07 1960-12-20 Empire Works Furniture leg adapter
US3199398A (en) * 1961-06-22 1965-08-10 Tibor Weisz Fixing plug
US3221481A (en) * 1963-08-19 1965-12-07 Sunbeam Corp Combination lawn edger and trimmer

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904827A (en) * 1989-01-30 1990-02-27 Harold Joseph Coleman Electric cord-protecting shipping plug
GB2245135A (en) * 1990-06-18 1992-01-02 Qualcast Garden Prod Folding handles
GB2245135B (en) * 1990-06-18 1993-11-17 Qualcast Garden Prod Folding handles
US5379846A (en) * 1993-01-07 1995-01-10 Black & Decker Inc. Electrical appliance and handle for same
EP0657255A1 (de) * 1993-12-10 1995-06-14 Black & Decker Inc. Elektrisch betriebenes Werkzeug
EP0703044A1 (de) * 1994-09-02 1996-03-27 Goblin Limited Verstellbare Verbindung
US5615970A (en) * 1994-10-20 1997-04-01 Black & Decker Inc. String trimmer having knock-down handle
US20140213325A1 (en) * 2011-08-29 2014-07-31 Nec Casio Mobile Communications, Ltd. Mobile terminal device
US9112955B2 (en) * 2011-08-29 2015-08-18 Nec Corporation Mobile terminal device
US20210146522A1 (en) * 2019-11-19 2021-05-20 Andreas Stihl Ag & Co. Kg Working Apparatus Having a Tubular Part and a Cable Arrangement, and Assembly Method
US12233525B2 (en) * 2019-11-19 2025-02-25 Andreas Stihl Ag & Co. Kg Working apparatus having a tubular part and a cable arrangement, and assembly method

Also Published As

Publication number Publication date
CA1011364A (en) 1977-05-31
DE7439870U (de) 1975-04-17
FR2253978B3 (de) 1977-08-12
FR2253978A1 (de) 1975-07-04

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