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US3677274A - Umbrellas - Google Patents

Umbrellas Download PDF

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Publication number
US3677274A
US3677274A US55847A US3677274DA US3677274A US 3677274 A US3677274 A US 3677274A US 55847 A US55847 A US 55847A US 3677274D A US3677274D A US 3677274DA US 3677274 A US3677274 A US 3677274A
Authority
US
United States
Prior art keywords
tubular
shaft
umbrella
members
grip
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
US55847A
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English (en)
Inventor
Hiroyuki Yasuda
Choji Arai
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.)
Ideal KK
Original Assignee
Ideal KK
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
Priority claimed from JP6977169U external-priority patent/JPS4810619Y1/ja
Priority claimed from JP6977069U external-priority patent/JPS4810618Y1/ja
Application filed by Ideal KK filed Critical Ideal KK
Application granted granted Critical
Publication of US3677274A publication Critical patent/US3677274A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B25/00—Details of umbrellas
    • A45B25/16—Automatic openers, e.g. frames with spring mechanisms

Definitions

  • ABSTRACT I in a collapsible, automatically openable umbrella comprising:
  • a telescopic dual shaft having a tubular inner lower shaft member and a tubular outer upper shaft member, a compression spring means housed in said shaft for urging said members to mutually extended positions, a slidable tubular intermediate member pivotably carrying rib-supporting spokes, and a slidable tubular lower member pivotably carrying spoke-supporting rods
  • the opening of the umbrella is greatly facilitated by the provision of a slidable tubular push-up member urged up- 'wardly by a compression spring provided in the bore of the grip secured to the lower end of the tubular inner lower shaft member, a resilient member provided on said tubular intermediate member or urge the spreading of the rib-supporting spokes.
  • a bufier member secured at the top of the shaft serves to alleviate the impact arising when the top edge of the tubular intermediate member hits against the shaft top.
  • FIG. 1 A first figure.
  • the present invention is concerned with an umbrella, and more particularly, it relates to improvements in a collapsible, automatically openable umbrella of the type that, upon depression of a push-buttonprotruding outwardly fromthe grip, the length of the telescopic dual tubular shaft is extended axially by the action of a compression spring means housed therein and that, along with this, the auxiliary rib members slidably received in their mating main rib members are extended axially therefrom and that, thereafter the slidable tubular lower member as well as the slidable tubular intermediate member mounted on the dual shaft are caused to move upwardly therealong, and further that, from the closed position of the umbrella which is effected by pulling said lower member downwardly and in which the collected free ends of the auxiliary rib members are anchored in the open top edge of the grip, this grip is pushed toward the top end of the dual shaft, whereupon the dual shaft is reduced in its length while compressing the compression spring means and, along therewith, the auxiliary
  • Said improvements lie in the arrangement that a resilient, member is provided on the tubular intermediate member to facilitate the smooth automatic spreading of the ribs from their state in which the collected auxiliary rib members are anchored in the upper open edge of the grip whereby the ribs are urged to spread to a limited extent first by the resiliency of said resilient member, and that a tubular push-up member normally urged upwardly by a compression spring means is slidably mounted in the bore of the grip to push up the tubular lower member upwardly and further that a buffer means is secured to the top portion of the shaft to serve to alleviate the impact arising when the top edge of the tubular intermediate member hits against the shaft top as the umbrella is opened automatically.
  • a collapsible, automatically openable umbrella comprising: a telescopic dual tubular shaft having an tubular outer upper shaft member provided with a plurality of ribs pivotably attached at one ends to the top of said outer tubular shaft members and an tubular inner lower shaft member having a grip secured to the lowermost end portion, said ribs each having a main rib member and an auxiliary rib member slidably received therein; a compression spring means housed in said telescopic dual shaft to urge said two shaft members to mutually extended positions; a slidable tubular intermediate member pivotably carrying rib-supporting spokes and a slidable tubular lower member pivotably carrying spoke-supporting rods both of which members being mounted on the shaft; a compression spring means mounted on said dual shaft between these two tubular members for urging them apart, and a latch means provided in the lower end portion of said inner lower shaft member to retain the parts in the collapsed configuration, whereby, upon the release of the latch means from the closed position
  • FIG. I is a side elevation, partly in section, of the umbrella frame of the present invention, showing the state of being opened;
  • FIG. 2 is a side elevation, partly in section, of the same umbrella frame, showing the state of being closed by pulling the tubular lower member downwardly on the shaft;
  • FIG. 3 is a side elevation, partly in section, of the same umbrella frame, showing the state in which the auxiliary rib members together with the main rib members coupled thereto are gathered together and the free ends of the auxiliary rib members are engaged inside the opentop of the grip;
  • FIG. 4 is a side elevation, partly in section, of the same umbrella frame, showing the state in which the collapsing of the umbrella, i.e., the reduction of the length of the telescopic dual shaft is suspended during the course of its compression to allow the user to adjust the irregular folds of the cloth;
  • FIG. 5 is a side elevation, partly in section, of the same umbrella frame, showing-the state in which the collapsing of the umbrella is completed;
  • FIG. 6 is a vertical sectional view of the portion in the vicinity of the grip when the umbrella frame is in the state shown in FIG. I;
  • FIG. 7 is a similar view when the umbrella frame is in the state shown in FIG. 2;
  • FIG. 8 is a similar view when the umbrella frame is in the state shown in FIG. 3;
  • Hg. 9 is a similar view when the umbrella frame is in the stage shown in FIG. 5;
  • FIG. 10 is a fragmentary side elevation, partly in section, showing the state in which the tubular outer upper shaft member is fixed to the tubular inner lower shaft member by means of two snap locking beads after these two shaft members have been fully extended relative to each other;
  • FIG. 11 is a cross sectional view, on an enlarged scale, taken outer upper shaft member
  • FIG. 14 is a perspective view of the buffer means in the form of a resilient ring which is provided on the lower end face of the fixed top member;
  • FIG. 15 is a perspective view of a resilient member provided on the tubular intermediate member
  • FIG. 16 is a perspective view of the tubular intermediate member
  • FIG. 17 is protective tubular member for protecting the tubular outer upper shaft member from being in contact with the compression spring means mounted thereon;
  • FIG. 18 is a perspective view of the compression spring means in the form of a compressible coil spring provided between the slidable tubular intermediate member and the tubular lower member;
  • FIG. 19 is a perspective view of the slidable tubular lower member
  • FIG. 20 is a perspective view of the spring-like latch means
  • FIG. 21 is a perspective view of the tubular push-up member adapted to be received in the central bore of the grip;
  • FIG. 22 is a perspective view of the compression spring means in the form of a compressible coil spring for urging said tubular push-up member upwardly;
  • FIG. 23 is a perspective view of the depressing means adapted to be provided in the grip.
  • a tubular outer upper shaft member 1 has a fixed top ring 2 secured at the top portion thereof.
  • the upper face of said top ring 2 forms a ferrule 3.
  • a tubular inner lower shaft member 4 is slidably received in said tubular outer upper shaft member 1.
  • This tubular inner lower shaft member 4 is provided, at its lower end, with a grip 5.
  • a compressible coil spring 6 is inserted, in the state of being compressed, within the tubular outer upper shaft member 1.
  • the lower end of said coil spring 6 is urged against a plug 4a (see FIG. which, in turn, is secured in the upper opening of the tubular inner lower shaft member 4.
  • the tubular inner lower shaft member 4 is provided, longitudinally on the outer surface thereof, with a recessed groove 7.
  • the tubular outer upper shaft member 1 is provided with a ridge 8 extending inwardly radially from the inner surface thereof in such a size and a configuration as will be suitable for being slidably received in said longitudinal recessed groove 7 formed on the outer surface of the tubular inner lower shaft member 4. Accordingly, the tubular outer upper shaft member 1 is allowed to slide rectilinearly along the outer surface of the tubular inner lower shaft member 4 in the directions away from and toward the lower portion of the latter shaft member 4 without rotating around the latter.
  • the tubular inner lower shaft member 4 is provided, at the upper end portion but below its plug 4a, with a pair of small openings formed through the wall thereof in diametrically opposite directions avoiding the location of the recessed groove 7, each of these small openings having a size and configuration sufficient for the passage therethrough of a major portion of a bead 9 of a pair of beads 9 and 9 of a snap locking means.
  • the snap locking means may be of the type described in detail in our copending Japanese Utility Model Applications Nos. 4420! and 44202. Therefore, the detailed description is omitted.
  • the tubular outer upper shaft member 1 is provided, at the lower portion thereof, with a pair of small openings 10 and 10 formed through the wall thereof in diametrically opposite directions avoiding the location of the ridge 8 in such a fashion as will be aligned with the positions of the small openings and accordingly the beads 9 and 9 of the tubular inner lower shaft member 4, each of these small openings 10 and 10 having a size and a configuration sufficient for the passage therethrough of the corresponding bead 9 of the snap locking means secured to the inner surface of the tubular inner lower shaft member 4.
  • tubular outer upper shaft member 1 is provided also with another small opening 11 of the same size and configuration as thatof said small opening 10 at a position a small distance.
  • each main rib member 12 is pivotably secured to the fixed top ring 2 so that the ribs radially may extend therefrom.
  • Each of these main rib members 12 is of a generally U-shaped sheath-like cross section.
  • This main rib member 12 is mounted by a sliding attachment member 13 capable of sliding on the main rib member 12.
  • An annular stopper member 14 is secured to the outer or forward free end of each of these main rib members 12 to prevent said slidable attachment member 13 from detaching off the main rib member 12.
  • An auxiliary rib member 15 formed with a length of a rod of a small diameter is inserted inside the U- shaped cross section of the main rib member 12 after passing through ,said annular stopper member 14.
  • auxiliary rib member 15 is coupled to the slidable attachment member 13 so that, along with the sliding movement of the slidable attachment member 13 on the main rib member 12, the auxiliaryrib member 15 is allowed to be withdrawn, in alignment with the main rib member 12, from the latter member 12 and to be received'into the main rib member 12, to thereby be able to extend and reduce the length of each rib as a whole.
  • a spoke 17 is pivotably coupled at one end to said slidable attachment member 13 and also at the other end to a tubular intermediate member 16 which is mounted, for sliding, on the dual shaft.
  • This tubular intermediate member 16 is mounted, integrally therewith, on a tubular sheath member 18 extending upwardly beyond the upper face of the tubular intermediate member 16 and is also provided, integrally therewith, with a flanged annular seat 16a at the lower end edge.
  • a resilient ring 19 made of an elastic material such as'a rubber is mounted on said tubular sheath member 18 so as to be in contact with the upper face of the tubular intermediate member 16.
  • a buffer ring 20 is mounted on the tubular outer upper shaft member 1 i so as to be in contact with the lower face of the fixed top ring 2.
  • a spoke-supporting rod 22 is pivotably secured at one end to an attachment piece 19 which is securely mounted at an appropriate intermediate portion on the spoke l7 and at the other end secured pivotably to a tubular lower member 23 which, in turn, is adapted to slide upwardly and downwardly below the tubular intermediate member 16 along the tubular outer upper shaft member 1 and the tubular inner lower shaft member 4.
  • the tubular lower member 23 is mounted securely on the upper end portion of a cylindrical member 25 which, in turn, is loosely mounted on the tubular outer upper shaft member 1 with an appropriate gap 22 left from the external circumferential surface of the latter shaft member 1.
  • A-grip tube 26 having a diameter smaller than that of the cylindrical member 25 by the provision of a shoulder 25a is formed at the lower end of the cylindrical member 25 integrally therewith.
  • the grip tube 26 is provided with vertically aligned and spaced two latch-engaging holes 27 and 27a.
  • a compressible coil spring 28 is mounted along the tubular outer upper shaft member 1 between the shoulder 25a within the gap 24 of the cylindrical member 25 and the flanged annular seat 16a of the tubular intermediate member 16.
  • This compressible coil spring 28 is of a spring force which is slightly weaker than that of the compressible coil spring 6 which is in- "serted in the tubular outer upper shaft member 1.
  • a protective tubular member 29 is mounted slidably on the tubular outer upper shaft member 1 to prevent the coil spring 28 from being brought into. contact with this shaft member 1. The upper end of said protective tubular member 29 is anchored within the flange annular seat 16a of the tubular intermediate member 16.
  • a spring-like latch means 30 is inserted in the lower portion of the tubular inner lower shaft member 4.
  • This spring-like latch means 30 is of a latch projection 30a which protrudes outside the wall of the tubular inner lower shaft member 4 through a slot 31 formed therethrough.
  • Said spring-like latch means 30 is of a projection 30b formed by bending the lower end portion thereof to also protrude outside the wall of the tubular inner lower shaft member 4 through. said slot 31 and to project therefrom into the central bore 32 of the grip 5.
  • the lowermost end of the tubular inner lower shaft member 4 is secured to the grip 5 at the bottom of the central bore 32 by means of a fastening member 33.
  • An annular anchoring member 34 is securely mounted on top edge of the central bore 32 of the grip 5 for anchoring the collected free ends of the auxiliary rib members 15.
  • a slidable tubular push-up member 35 is mounted on the end portion of the tubular inner lower shaft member 4 within the central bore 32 of the grip 5.
  • a compressible coil spring 36 having its lower end in contact with the bottom of the central bore 32 of the grip 5' is mounted on the lower part of the tubular inner lowershaft member 4.
  • the slidable tubular push-up member 35 is normally urged upwardly by said compressible coil spring 36.
  • the slidable tubular push-up member 35 is providedwith a slit 35a formed therethrough on one side upto an appropriate depth from the upper end edge of this member 35.
  • the projection 30b of the spring-like latch means 30 is inserted in said slit 35a.
  • This projection 30b is adapted to retreat into the space in the tubular inner lower shaft member 4 by the application of an external pressure thereto upon the depression of the push-button 37 which projects outwardly beyond the outer side surface of the grip 5.
  • This push-button 37 is of an enlarged configuration which joins the upper end of a resilient leg 37b protruding from an annular base member 37a which, in turn, is secured to the bottom of the central bore of the grip 5 by the fastening member 33.
  • the inner side face of the push-button 37 is arranged to oppose the projection 30b, whereas the outer sideof this push-button 37 projects outwardly beyond the outer side surface of the grip 5 through a a slot formed in the side wall of the grip 5.
  • the coil spring 28 is compressed so that the tubular intermediate member 16 approach closer toward the tubular lower member 23.
  • the latch projection 30a of the spring-like latch means 30 is brought into engagement with the lower latch-engaging hole 27a of the grip tube 26.
  • the umbrella frame is locked in its closed position. From this closed state of the umbrella, the free ends of the auxiliary rib members 15 may be gathered and the grip 5 may be pushed toward the top end of the dual shaft. Whereupon the beads 9 and 9 of the snap locking means provided in the tubular inner lower shaft member 4 are relieved of their engagement with the small openings and 10 of the tubular outer upper shaft member 1.
  • the tubular inner lower shaft member 4 enters for a small distance into the tubular outer upper shaft member 1 while compressing to a slight extent the coil spring 6 housed in the latter shaft member 1 as shown in H6. 3.
  • the gathered free ends of the auxiliary rib members engage in the annular anchoring member 34 which is provided at the open top of the grip 5.
  • the latch projection 30a of the spring-like latch means 30 is relieved of its engagement with the lower latch-engaging hole 27a of the grip tube 26 and is brought into engagement with the upper latch-engaging hole 27. Accordingly, the tubular push-up member 35 is depressed by the lower end edge of the grip tube 26 to move downwardly.
  • the push-button 37 may be depressed further to relieve the engagement of the latch projection 30a with the latch-engaging hole 270. whereupon, the spring force of the compressed coil spring 28 pushes both the tubular lower member 23 and the tubular intermediate member 16 upwardly along the dual shaft, while spreading the supporting rods 22 as well as the spokes 17, causing the main rib members 12 to open automatically.
  • the spring force of the compressed coil spring 28 pushes both the tubular lower member 23 and the tubular intermediate member 16 upwardly along the dual shaft, while spreading the supporting rods 22 as well as the spokes 17, causing the main rib members 12 to open automatically.
  • tubular intermediate member 16 will stop abruptly when the upper end edge of the tubular sheath member 18 which is formed integrally therewith hits against the buffer ring 20.
  • the tubular lower member 23 will make a voluntary halt after it has made an up-- ward movement along the dual shaft up to a position at which there is established a balance between the tension of the coil spring 28 and the tension of the umbrella cloth 38 which covers the main rib members 12 and the auxiliary rib members 15.
  • the auxiliary rib members 15 will be received up to an appropriate length thereof into the main rib members 12.
  • the umbrella cloth 38 will assume a configuration in which it is folded in the form of a substantially mushroom shape.
  • the user may adjust the irregular folds of the umbrella cloth 38.
  • he may apply a relatively intensive force onto the grip 5 toward the ferrule 3. whereupon, the tubular outer upper shaft member 1 will be relieved of the engagement between the small opening 11 and the bead 9 and will receive therein the tubular inner lower shaft member 4 to a further extent to further reduce the length of the dual shaft.
  • the umbrella is locked in its further compressed state as shown in FIG. 5..ln this state, the auxiliary rib members are received further in their mating main rib members 12 so that the umbrella cloth is folded into a perfect mushroom shape. Since the folds of the umbrella cloth have been already adjusted, the compressed umbrella now may be placed in a wrapping member for the convenience of the user in carrying it with him.
  • the present invention insures that the closing and the automatic opening of the umbrella are both performed with a great smoothness. Not only that, the present invention provides the user with a great convenience in carrying the umbrella with him. Furthermore, the present invention permits the user to effect automatic opening of the umbrella quite easily with one of his hands.
  • the umbrella of the present invention is'particularly' characterized by the provision, within the'bore of the grip S, of the tubular push-up member 35 adapted to be urged upwardly by the coil spring 36, as will be clearly understood from the description of the preferred embodiment.
  • a resilient ring 19 is mounted on the tubular intermediate member 16.
  • This resilient ring 19 serves to encourage the ribs in parting away from the dual shaft when the umbrella is about to be opened. In close cooperation with the tubular push-up member 35, this resilient ring 19 makes the automatic opening of the umbrella all the more certain.
  • the provision of a buffer ring 20 on the lower face of the fixed top ring 2 adequately alleviates the impact which arises when the tubular intermediate member 16 hits against the fixed top ring 2 at the time the umbrella is opened. This alleviation of impact not only serves to minimize the shock transmitted to the user, but also minimizes the impact transmitted to the joints of the parts of umbrella, and saves the frame from sustaining damages clue to accumulated fatigue.
  • a collapsible, automatically openable umbrella comprising:
  • a telescopic dual shaft including a tubular outer upper shaft member and a tubular inner lower shaft member.
  • top member fixed to the top of said upper shaft member and adapted to carry pivotable ends of a plurality of ribs;
  • said ribs each including a main rib member and an auxiliary rib member, the latter being slidably received in the former;
  • a compression spring housed in said upper shaft member for urging said two shaft members to mutually extended positions
  • a tubular intermediate member slidably mounted on said dual shaft and adapted to carry pivotable ends of rib-supporting spokes;
  • tubular lower member slidably mounted on said dual shaft below said tubular intermediate member and adapted to carry spoke-supporting rods;
  • a compressible spring mounted on said dual shaft between said tubular intermediate and lower members for urging these two members relatively apart, whereby those two members are moved upward along said dual shaft while effecting automatic opening of the umbrella with concurrent extension of the auxiliary rib members from their mating main rib members upon release of a latch provided in a lower portion of said lower shaft member;
  • said latch is adapted to catch said tubular lower member at two closely adjacent positions, at one of which the tips of said auxiliary rib members can be engaged into a flange formed at said grip and at the other of which said tips are disengaged from said flange;
  • a spring-urged push up means being mounted in said grip and adapted to resiliently urge said tubular lower member upward from its lowermost position

Landscapes

  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
US55847A 1969-07-23 1970-07-17 Umbrellas Expired - Lifetime US3677274A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6977169U JPS4810619Y1 (de) 1969-07-23 1969-07-23
JP6977069U JPS4810618Y1 (de) 1969-07-23 1969-07-23

Publications (1)

Publication Number Publication Date
US3677274A true US3677274A (en) 1972-07-18

Family

ID=26410931

Family Applications (1)

Application Number Title Priority Date Filing Date
US55847A Expired - Lifetime US3677274A (en) 1969-07-23 1970-07-17 Umbrellas

Country Status (5)

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US (1) US3677274A (de)
CH (1) CH514309A (de)
FR (1) FR2053111B1 (de)
GB (1) GB1323891A (de)
NL (1) NL7010871A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421133A (en) * 1981-09-22 1983-12-20 Yueh Huang Umbrella
US4685482A (en) * 1985-03-06 1987-08-11 Yung Kwong Y Closable, collapsible umbrella for one-hand operation
US4934395A (en) * 1988-09-29 1990-06-19 `Totes`, Incorporated Short fold rib linkage for an umbrella
US5088512A (en) * 1991-07-26 1992-02-18 Sheng-Tong Day Lightly operable fully automatic umbrella
US5144969A (en) * 1991-09-12 1992-09-08 Day Sheng-Tong Fully automatic collapsible umbrella
US5357994A (en) * 1994-04-26 1994-10-25 Chung Wen C Hidden safety contoured leaf spring locking device
US5492140A (en) * 1995-07-28 1996-02-20 Fu Tai Umbrella Works, Ltd. Multiple-fold automatic umbrella with simplified grip
US6401736B1 (en) 2000-08-21 2002-06-11 Alex Jerry Umbrella device with engaging mechanism
US20060207638A1 (en) * 2005-03-21 2006-09-21 Ching-Chuan You Opening device of automatic umbrella
US20150068568A1 (en) * 2013-09-12 2015-03-12 Tsun-Zong Wu Opening spring for multiple fold automatic open-close unbrella
USD744742S1 (en) * 2013-11-05 2015-12-08 Ching-Chuan You Umbrella stick

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520518C2 (de) * 1985-06-07 1987-04-23 Kortenbach & Rauh Kg, 5650 Solingen Teleskopstock für verkürzbare Schirme
US5309933A (en) * 1992-03-30 1994-05-10 Hisao Nagai One-hand openable and closable umbrella
CN102018344B (zh) * 2010-12-17 2015-10-28 盛靖科技（深圳）有限公司 中棒缓冲装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561969A (de) *
DE801216C (de) * 1948-10-02 1950-12-28 Kortenbach & Rauh Kg Verkuerzbarer Schirm mit Verriegelung der ausgezogenen Dachstangen
US2705967A (en) * 1952-01-08 1955-04-12 Rosenkaimer Gmbh Self opening umbrella

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561969A (de) *
DE801216C (de) * 1948-10-02 1950-12-28 Kortenbach & Rauh Kg Verkuerzbarer Schirm mit Verriegelung der ausgezogenen Dachstangen
US2705967A (en) * 1952-01-08 1955-04-12 Rosenkaimer Gmbh Self opening umbrella

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421133A (en) * 1981-09-22 1983-12-20 Yueh Huang Umbrella
US4685482A (en) * 1985-03-06 1987-08-11 Yung Kwong Y Closable, collapsible umbrella for one-hand operation
US4934395A (en) * 1988-09-29 1990-06-19 `Totes`, Incorporated Short fold rib linkage for an umbrella
US5088512A (en) * 1991-07-26 1992-02-18 Sheng-Tong Day Lightly operable fully automatic umbrella
US5144969A (en) * 1991-09-12 1992-09-08 Day Sheng-Tong Fully automatic collapsible umbrella
US5357994A (en) * 1994-04-26 1994-10-25 Chung Wen C Hidden safety contoured leaf spring locking device
US5492140A (en) * 1995-07-28 1996-02-20 Fu Tai Umbrella Works, Ltd. Multiple-fold automatic umbrella with simplified grip
US6401736B1 (en) 2000-08-21 2002-06-11 Alex Jerry Umbrella device with engaging mechanism
US20060207638A1 (en) * 2005-03-21 2006-09-21 Ching-Chuan You Opening device of automatic umbrella
US7252103B2 (en) * 2005-03-21 2007-08-07 Ching-Chuan You Opening device of automatic umbrella
US20150068568A1 (en) * 2013-09-12 2015-03-12 Tsun-Zong Wu Opening spring for multiple fold automatic open-close unbrella
USD744742S1 (en) * 2013-11-05 2015-12-08 Ching-Chuan You Umbrella stick

Also Published As

Publication number Publication date
FR2053111B1 (de) 1973-03-16
FR2053111A1 (de) 1971-04-16
DE2036356A1 (de) 1971-02-04
NL7010871A (de) 1971-01-26
GB1323891A (en) 1973-07-18
CH514309A (de) 1971-10-31

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