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US3679853A - Multiple contact system for cam operated switches - Google Patents

Multiple contact system for cam operated switches Download PDF

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Publication number
US3679853A
US3679853A US109444A US3679853DA US3679853A US 3679853 A US3679853 A US 3679853A US 109444 A US109444 A US 109444A US 3679853D A US3679853D A US 3679853DA US 3679853 A US3679853 A US 3679853A
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US
United States
Prior art keywords
contact
housing
contact bridge
operating lever
switching
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
US109444A
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English (en)
Inventor
Walter Holzer
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.)
Holzer Patent AG
Original Assignee
Holzer Patent AG
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 Holzer Patent AG filed Critical Holzer Patent AG
Application granted granted Critical
Publication of US3679853A publication Critical patent/US3679853A/en
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/02—Details
    • H01H43/04—Means for time setting
    • H01H43/08—Means for time setting comprising an interchangeable programme part which is common for all programme steps, e.g. with a punched card
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/40—Contact mounted so that its contact-making surface is flush with adjoining insulation
    • H01H1/403—Contacts forming part of a printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices

Definitions

  • the invention relates to a multiple contact system for cam operated switches, especially for use in automatic cyclic operations, consisting of a multiplicity of individual systems independent of one another and a printed wiring board which is an integrated component of the contact housing common to all individual systems and whose wiring paths lead to the individual systems.
  • the individual contact systems are to be made in such a way that they will operate with the least possible chatter. Changes in the components in accordance with desires of the clients should be possible to execute without the entire switching apparatus having to be opened. It should be possible to bring out as much as possible all contacts on one or more sides for quick contact of the entire switching apparatus. In order to assure as high as possible a degree of operating reliability of the device, there should be a way that any possibly sticking network contacts are opened positively.
  • the object of the application is to meet the requirement for an especially flat manner of construction.
  • the individual switching systems are to be capable of switching system capacity.
  • the object of the application has several advantages. With the object of the application it will be possible to equip the entire multiple contact system in a single operation with component parts. Since the assembly is accomplished merely by a simple insertion of all necessary parts, only this single operation will be necessary for this. Since the contact bridges are operated via springs, they are largely free of chatter even on the permanent support. Later changes of the components based on unforeseeable requests of the clients can be achieved very easily without opening the actual device for the automatic cyclic operation by simply opening the contact system.
  • Galvanic through-contacts which are necessary otherwise can be omitted as a result of the armoring of the fixed contacts of the printed wiring board with the assistance of inserted rivets. As soon as the spring strip has been attached to the proper connections of the printed wiring board, the device for the automatic cyclic operation will be shockproof at this place.
  • FIG. 1 shows a multiple contact system with a change over switch shown partly in section
  • FIGS. 2 5 show an individual contact system in various switching stages in section
  • FIG. 6 shows an individual contact system with a plug connection slipped onto the printed wiring board, in section
  • FIGS. 7 and 8 show an individual contact system with a U shaped operating lever, in section
  • FIG. 9 shows a multiple contact system with a change over switch, in perspective presentation and partly in cut
  • FIGS. 10 13 show an individual system of the multiple system of FIG. 9, in section, in various switching states
  • FIG. 14 shows in perspective presentation a multiple contact system each time with two contact bridges per individual system, partly in section,
  • FIGS. 15 18 show a single system of the presentation of FIG. 14 in difierent switching states, in section,
  • FIGS. 19 and 20 show a single system of the multiple system of FIG. 14, however with a U-shaped operating lever in section
  • FIG. 21 shows in perspective presentation a multiple contact system, partly in section
  • FIGS. 22 24 show a single system of the multiple system of FIG. 21 in different switching states, in section,
  • FIG. 25 shows a single system of the multiple system of FIG. 21, however with a stamped metal part as contact bridge, in section.
  • a multiplicity of individual contact systems has been housed in a housing part 13 (FIG. 1).
  • the individual contact systems may be separated from each other by intermediate walls in this housing part 13.
  • the housing part 13 is closed by a printed wiring board 4 which may carry wiring paths 12 either on one or both sides.
  • Fixed contacts 5 may be formed by the ends of the wiring paths.
  • the printed wiring board 4 may be provided with one or more parts developed as plug connections 15.
  • a free end 10 of an operating lever may project through a perforation in the housing part 13 and there may scan a cam disk or cam roller. Structure and method of operation of the individual contact systems will be explained in more detail on the basis of FIGS. 2 to 5.
  • the housing part 13 (FIG. 2) encompasses all moving parts of the contact system.
  • the side of printed wiring board 4 turned toward the inside of the housing has been provided with wiring paths, the ends of which constitute the firm contact elements 5 inside the housing.
  • a contact bridge 1 has been developed as a two-armed lever.
  • an are shaped support 19 is disposed in the embodiment presented by way of example. Naturally a disk shaped support could also be used.
  • An operating lever 3 which is mounted with its support 21 in a half opened bearing 20 carries a spring 6 which exerts pressure on one arm of contact bridge I.
  • a free end 10 of the operating lever 3 reaches through a perforation 9 in housing part 13 and scans cam 7 of a cam carrier.
  • the arm of contact bridge I not under pressure from the spring rests on a switching finger 22 of the operating lever 3.
  • the printed wiring board 4 has been prolonged beyond the housing part 13 and developed as a plug connection element or a plug strip 15.
  • the wiring paths brought out from the housing constitute the electrically conductive component of the plug strip.
  • FIG. 2 the switching system has been shown in such a way that the operating lever 3 just happens to scan an interval between cams 7.
  • the part of the contact bridge fitting against the switching finger 22 of the operating lever 3 runs by one contact over a rivet attached to it on the one hand and the support 19 on the other hand.
  • FIG. 3 a middle position of the contact bridge is shown.
  • the free end of operating lever 3 is on a cam 7 of medium height. Since the contact bridge 1 is constantly under pressure exerted by spring 6, the position of contact bridge merely depends on the positioning of the switching finger 22 of operating lever 3.
  • the contact bridge 1 closes the opposite contact between a rivet attached to its spring loaded part on the one hand and the support 19 on the other hand.
  • the firm contacts formed by the ends of the wiring paths will be reinforced by means of rivets l 1 (FIG. 6).
  • the rivets inserted in this manner can serve simultaneously as through connectors between the wiring paths on both sides of the printed wiring board.
  • rivets can also be used in the case of unilaterally lined printed wiring boards. In this case it is also possible to place the wiring paths on the outside of the housing and to permit only the rivet to project into the inside of the housing.
  • rivets 8 can be attached at the intermediate walls which separate the individual switching systems one from the other (FIG. 1). Corresponding recesses in contact bridges and operating levers must then be provided.
  • the solid contacts 5 may also be coated with a protective covering, for example, of silver instead of the contact rivets 11 (FIG. 6).
  • the opening contacts may be reinforced with rivets and the fixed contact may be coated with silver at the permanent support 19.
  • a third possibility results from the fact that the fixed contact in the case of the opening contacts are coated with silver and the fixed contacts at the permanent support can be provided merely with polished wiring paths.
  • FIG. 9-similarly as in FIG. I- shows another embodiment by way of example of a multiple contact system in perspective presentation and partially in section. A single system is shown also of this contact system on the basis of FIGS. 10 to 12 in various switching states.
  • This switch housing again is formed by a housing part 13 on the one hand and a printed wiring board 4 as a closing lid on the other hand (FIG. 10). Inside the contact housing an operating lever 3 has been disposed with a support 19 in a half opened bearing 20. At the opposite end of operating lever 3 there is a switching finger 22. Between the switching finger and the free end 10 of this lever there is a projection 18.
  • a contact bridge 1 made of spring material rests on the one hand on the switching finger 22 and the projection 18 and on the other hand on a fixed contact 5 of the printed wiring board 4.
  • the contact bridge 1 encloses an angle of less than so that this results in a balance shaped form.
  • a spring 6 is supported by the operating lever 3. This spring 6 on the one hand forces contact bridge I at the tipping point against the printed wiring board 4 and on the other hand induces operating lever 3 to scan cams 7 with its free end 10.
  • FIG. 11 a middle position of contact bridge 1 is shown. This position is achieved by the operating lever being lifted up by a cam 7 of medium height, as a result of which the contact bridge 1 is lifted up on one side by means of projection 18 and is lowered on the other side by switching finger 22.
  • contact rivets 1 I If, basically, very considerable performances are to be switched, then it is possible to use contact rivets 1 I. If in addition to contact rivets II a printed wiring board lined on both sides is used, then one largely has a free hand in the wiring of the entire switching device.
  • the printed wiring board 4 can be extended beyond the actual contact housing and can form one or more plug connections 15. Y
  • the contact bridge 1 can be equipped with contact rivets.
  • FIG. 14 shows a perspective presentation, partly in section, of a further embodiment of the multiple contact system by way of example, where every individual contact is equipped with two contact bridges.
  • the printed wiring board 4 can be developed as a plug connection 15 extending beyond the housing part 13. The function and the arrangement of this embodiment given by way of example will be explained in more detail on the basis of FIGS. 15 to 18.
  • Every individual contact system (FIG. 15) is formed essentially by the housing part 13 and the printed wiring board 4 as a cover.
  • the housing part 13 there is first of all an operating lever 3, which is supported by a support 21 in a half opened bearing 20 of the housing part 13.
  • the operating lever 3 has a free end 10 which projects through a perforation 9 at the housing part 13 and scans cams 7.
  • Cams 7 are attached to a cam carrier which can be, for example, a cam disk or a cam roller.
  • the operating lever 3 has a switching finger 22.
  • an auxiliary arm 24 has still been attached.
  • Two springs 6 are supported by operating lever 3 between its support 21 and the auxiliary arm 24.
  • these springs 6 engage with two contact bridges 2 and I.
  • These contact bridges are made in the shape of a balance, whereby one contact bridge 2 has been shaped as a two-armed lever and the other contact bridge 1 as a one-armed lever. They either have-as shown in the drawingsl-bent elements (for example 19) or edge-shaped elements (not shown in the drawings), with which they have been mounted movably on fixed contacts 5 of the printed wiring board 4. Bent parts are advantageous in that in the case of tipping of the switching bridges they will have more friction than, for example, an edge. As a result of that, the place of contact is constantly kept free of layers of oxide.
  • FIG. 18 shows another development of the operating lever 3.
  • a second auxiliary arm 23 is used instead of a switching finger 22 (FIGS. 15, 16 and 17).
  • the latter embraces, just like auxiliary arm 24, its pertinent contact bridge 2.
  • FIG. 18 shows the state in which a welding contact of the contact bridge 2 is in the position just before the positive opening.
  • FIG. 19 In addition to a pure contact operation, still have the advantage that in the case of the operation of the switching system, contact bridges 1 are shifted slightly in their longitudinal direction relative to operating lever 3 and, as a result of that, they make possible the cleaning of the contact. Otherwise the system shown in FIG. 19 operates exactly the same way as the switching systems described on the basis of FIGS. 15 to 18. Holding ribs 27 attached in the operating lever 3 will prevent contact bridge 1 fitting against these ribs from slipping out in one direction; auxiliary arm 24 takes over this guidance in the other direction.
  • FIG. 20 shows the operating lever in cross section. From this drawing the guidance of the contact bridge 1 can be recognized by the inside wall of the U-shaped operating lever 3.
  • the fiat stamped parts, after stamping have precise dimensions and they are more stable in operation than flat contact bridges. As a result, there will be a certain saving in material since the contact bridges can be made of thinner material. It is possible to insert possibly necessary contact rivets into the contact bridges simultaneously with the stamping. Additional guides in the contact housing are unnecessary in the case of use of the operating lever described. Because of its U shape, this lever has greater stability.
  • FIG. 21 shows in perspective presentation a multiple contact system, partly in section.
  • a housing part 13 is used and a printed wiring board 4 as a housing cover.
  • the printed wiring board 4 may be extended beyond the housing part 13 and be developed as a plug connection 15. Structure and method of operation of each individual system will be explained in more detail on the basis of FIGS. 22 to 25.
  • Every individual contact system is enclosed by a housing which consists of a housing part 13 (FIG. 22) and a printed wiring board 4.
  • the housing part 13 on the basis of its trough shape constitutes the largest part of the housing and is closed by the printed wiring board 4 as a lid.
  • the printed wiring board 4 has wiring paths 12, the ends of which constitute on the one hand fixed contacts 5 and on the other hand conductive components of plug-in strips 15.
  • the plug-in strips 15 are formed in a known manner by the printed wiring board 4 itself(see also FIG. 21).
  • the free end 10 has the function of scanning cams 7 disposed on a cam disk or cam roller.
  • the cam carrier moves in the direction of arrow 14 and induces contact bridge 1 to assume various positions in correspondence with the cam 7 engaging with the free end 10 of the contact bridge 1.
  • the contact bridge 1 is under pressure of a spring 6 which is supported on the one handas is evident in FIG. 22-by the housing part 13 and on the other hand by contact bridge 1.
  • FIG. 22 shows the contact system in its closed state.
  • the contact bridge 1 In order to be able to open the contact (FIG. 23), the contact bridge 1 is lifted up by cam 7, as a result of which the rivet attached to the contact bridge I is lifted 05 the fixed contact 5.
  • Contact bridge 1, which at its end opposite free end 10 has been bent approximately at right angles, rests with this bent part constantly on a fixed contact of the wiring paths 12. Upon opening the electric contact, the bent part of the contact bridge rubs against the fixed contact. As soon as free end 10 of contact bridge 1 can again drop into a gap between two cams 7, the contact is against closed.
  • contact bridge 1 is guided by a rib 8 disposed in the housing part 13. Additional ribs can be disposed in the housing part 13 for guidance. If need be it is also possible to achieve a certain guidance of contact bridge 1 at its free end 10 by properly shaping perforation 9.
  • Performance contacts under a high load can be reinforced with the assistance of rivets 11 (FIG. 24).
  • rivets 11 are needed only when this is absolutely necessary because of the high switching performances.
  • the printed wiring board 4 can also be lined on both sides with an electrically conductive layer. In the case of use of such a printed wiring board and of the additional use of rivets 11, the additional introduction of 5 electric through-contacts is largely unnecessary, which are to establish galvanic connections of wiring paths on one side to wiring paths on the other side of the printed wiring board.
  • a multiple contact system provided with a printed wiring board lined on both sides and with performance contacts in the form of contact rivets constitutes a particularly abundant variety of wiring possibilities since crossings of lines can be realized at any time.
  • the contact system described in FIGS. 22 to 24 has the advantage rnentioned briefly further above, that only the printed wiring board 4 can be put under thermal load during operation of the contact system.
  • the parts of this printed wiring board 4 under thermal load however can not be touched from the outside. Therefore, housing part 13 does not have to fulfill any special requirements with regard to thermal load capacity.
  • FIG. 25 Another possibility of the arrangement of a single contact system is shown in FIG. 25.
  • the essential differences with regard to the arrangements of FIGS. 22 to 24 are to be seen in that in the system according to FIG. 25 the free end of contact bridge 1 penetrates the housing part 13 in order to scan cam 7 of a cam carrier. From this it results in the case of this arrangement that the printed wiring board 4 can be touched from the outside, since it is not opposite the cam carrier.
  • FIG. 25 furthermore, two ribs 8 are shown which can be used in the systems just the same as those according to FIGS. 22 to 24 and which serve to center the contact bridge 1.
  • a stamped part can be used in the contact system according to FIG. 25 and in contrast to the contact systems described above. Stamped contact bridges can be produced particularly economically since the final shape of the contact bridge will have already been determined by the stamping process and therefore better precision can be achieved.
  • the fixed contacts 5 are coated with a protective coating made, for example, of silver.
  • the opening contacts can also be ,reinforced with rivets and the fixed contacts (friction contacts) can be coated with silver at their constant support.
  • the fixed contacts be coated with silver in the case of opening contacts and the fixed contacts at the permanent support (friction hearing) are equipped only with a polished material for wiring paths.
  • a multiple contact switching apparatus comprising:
  • a non-conductive housing including a plurality of individual compartments, said housing including integral wiring paths terminating at fixed contacts, each of said compartments including fixed contacts connected to respective ones of said wiring paths, a support member, and an opening;
  • each of said switching mechanisms comprising,
  • said operating lever mounted on said support member, said operating lever including spaced switching fingers and an element extending through said opening outside said housing;
  • a contact bridge mounted on said operating lever and extending over said switching fingers, said contact bridge including spaced contact elements aligned with corresponding contacts on said housing, support means extending from said contact bridge and in contact with said housing;
  • a multiple contact switching apparatus as in claim 1 wherein said operating lever has a U-shaped cross section and said contact bridge is mounted within the arms of said operating lever by a projecu'on engaging with said operating lever.
  • a multiple contact switching apparatus as in claim 1 wherein said operating lever is bent to be in contact with each of said switching fingers.
  • each of said switching mechanisms further comprises an additional contact bridge mounted on said operating lever by an additional biasing means and said additional contact bridge includes an additional support means in contact with said housing.
  • each of said compartments includes a projection and one end of said additional contact bridge is pivotally connected to said projection.
  • each of said switching fingers is in the form of a supporting arm having a respective opening through which said contact bridge and said additional contact bridge respectively protrude whereby upon rotation of said operating lever said contact bridge and said additional contact bridge are slightly shifted to cause a wiping action of the contact elements.
  • a multiple contact switching apparatus as in claim 5 wherein said operating lever has a U-shaped cross section and said contact bridge and said additional contact bridge are mounted within the arms of said operating lever by projections engaging with said operating lever.
  • a multiple contact switching apparatus as in claim 1 wherein one side of said housing extends beyond an adjacent wall thereof and includes said fixed contacts at the end portion of said extended side.
  • a multiple contact switching apparatus comprising:
  • a non-conductive housing including a plurality of individual compartments, said housing including integral wiring paths terminating at fixed contacts, each of said compartments including fixed contacts connected to respective ones of said wiring paths, a support member, and an p g;
  • each of said switching mechanisms comprising,
  • a contact bridge including spaced contact elements aligned with corresponding contacts on said housing, support means extending from said contact bridge and in contact with said housing, one end of said contact bridge is pivotally engaged with said housing and the other end of said contact bridge extends through said opening;

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Structure Of Telephone Exchanges (AREA)
US109444A 1970-01-26 1971-01-25 Multiple contact system for cam operated switches Expired - Lifetime US3679853A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH101670A CH504770A (de) 1970-01-26 1970-01-26 Kontaktanordnung an einem Nockenschalter, insbesondere zur Verwendung in Programmschaltwerken
CH101770A CH513459A (de) 1970-01-26 1970-01-26 Kontaktanordnung an einem Nockenschalter, insbesondere zur Verwendung in Programmschaltwerken
CH101970A CH513460A (de) 1970-01-26 1970-01-26 Kontaktanordnung an einem Nockenschalter, insbesondere zur Verwendung in Programmschaltwerken
CH101870A CH512815A (de) 1970-01-26 1970-01-26 Kontaktanordnung an einem Nockenschalter, insbesondere zur Verwendung in Programmschaltwerken
DE2025581A DE2025581C3 (de) 1970-01-26 1970-05-26 Mehrfachkontaktsystem für Nockenschalter

Publications (1)

Publication Number Publication Date
US3679853A true US3679853A (en) 1972-07-25

Family

ID=27508914

Family Applications (1)

Application Number Title Priority Date Filing Date
US109444A Expired - Lifetime US3679853A (en) 1970-01-26 1971-01-25 Multiple contact system for cam operated switches

Country Status (6)

Country Link
US (1) US3679853A (de)
CA (1) CA941421A (de)
CH (4) CH512815A (de)
DE (4) DE2025581C3 (de)
FR (1) FR2076947A5 (de)
GB (1) GB1283884A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749872A (en) * 1970-04-01 1973-07-31 Sumlock Anita Electronics Ltd Switch mounted on printed circuit board
US3801766A (en) * 1973-01-22 1974-04-02 Valleylab Inc Switching means for an electro-surgical device including particular contact means and particular printed-circuit mounting means
US3842230A (en) * 1972-03-09 1974-10-15 Casio Computer Co Ltd Pushbutton switch with coil spring contact
US4354339A (en) * 1980-11-14 1982-10-19 Clarence Nokes Lawn mower apparatus
US20090308120A1 (en) * 2003-10-28 2009-12-17 Intier Automotive Closures S.P.A. Method for making a supporting body for the lock of a motor vehicle, and a supporting body thus obtained
CN101308967B (zh) * 2007-03-21 2012-06-06 西门子公司 具有多个接触支撑位置的接触系统

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2251752B2 (de) * 1972-10-21 1976-11-11 Standard Elektrik Lorenz Ag, 7000 Stuttgart Prellarmer kontakt
ES2033211A6 (es) * 1991-07-29 1993-03-01 Fagor S Coop Ltda Conmutador-interruptor para aparatos de mando.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250885A (en) * 1963-05-18 1966-05-10 Holzer Walter Flat contact piece
US3541277A (en) * 1968-05-28 1970-11-17 Bell Telephone Labor Inc Web actuated switch
US3544740A (en) * 1965-12-28 1970-12-01 Claude M Robin Track providing a bipolar contact throughout its surface and sliding contact-pieces therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250885A (en) * 1963-05-18 1966-05-10 Holzer Walter Flat contact piece
US3544740A (en) * 1965-12-28 1970-12-01 Claude M Robin Track providing a bipolar contact throughout its surface and sliding contact-pieces therefor
US3541277A (en) * 1968-05-28 1970-11-17 Bell Telephone Labor Inc Web actuated switch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749872A (en) * 1970-04-01 1973-07-31 Sumlock Anita Electronics Ltd Switch mounted on printed circuit board
US3842230A (en) * 1972-03-09 1974-10-15 Casio Computer Co Ltd Pushbutton switch with coil spring contact
US3801766A (en) * 1973-01-22 1974-04-02 Valleylab Inc Switching means for an electro-surgical device including particular contact means and particular printed-circuit mounting means
US4354339A (en) * 1980-11-14 1982-10-19 Clarence Nokes Lawn mower apparatus
US20090308120A1 (en) * 2003-10-28 2009-12-17 Intier Automotive Closures S.P.A. Method for making a supporting body for the lock of a motor vehicle, and a supporting body thus obtained
US8075319B2 (en) * 2003-10-28 2011-12-13 Intier Automotive Closures S.P.A. Method for making a supporting body for the lock of a motor vehicle, and a supporting body thus obtained
CN101308967B (zh) * 2007-03-21 2012-06-06 西门子公司 具有多个接触支撑位置的接触系统

Also Published As

Publication number Publication date
DE2025980C3 (de) 1978-10-05
DE2025581A1 (de) 1971-08-12
DE2025581C3 (de) 1978-11-09
DE2025982B2 (de) 1977-05-26
DE2025980A1 (de) 1971-09-09
CH513460A (de) 1971-09-30
FR2076947A5 (de) 1971-10-15
DE2025982A1 (de) 1971-08-12
DE2025981A1 (de) 1971-08-12
DE2025980B2 (de) 1977-05-18
CH504770A (de) 1971-03-15
DE2025981C3 (de) 1978-11-02
GB1283884A (en) 1972-08-02
DE2025581B2 (de) 1977-05-18
CH513459A (de) 1971-09-30
CH512815A (de) 1971-09-15
DE2025981B2 (de) 1977-05-18
CA941421A (en) 1974-02-05

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