US3232136A - Adjustable hinge fitting for collapsible stands, reclining chairs, and the like - Google Patents

Adjustable hinge fitting for collapsible stands, reclining chairs, and the like Download PDF

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Publication number
US3232136A
US3232136A US77596A US7759660A US3232136A US 3232136 A US3232136 A US 3232136A US 77596 A US77596 A US 77596A US 7759660 A US7759660 A US 7759660A US 3232136 A US3232136 A US 3232136A
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US
United States
Prior art keywords
arm
control lever
locking
hinge
pivotally securing
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
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US77596A
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English (en)
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Bahmuller Wilhelm
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60NSEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • B60N2/235Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms
    • B60N2/2352Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by gear-pawl type mechanisms with external pawls
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/022Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A47C1/026Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C20/00Head-, foot- or like rests for beds, sofas or the like
    • A47C20/04Head-, foot- or like rests for beds, sofas or the like with adjustable inclination
    • A47C20/06Head-, foot- or like rests for beds, sofas or the like with adjustable inclination the adjustable part immobilising foldable legs
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32254Lockable at fixed position
    • Y10T403/32262At selected angle
    • Y10T403/32319At selected angle including pivot stud
    • Y10T403/32327At selected angle including pivot stud including radially spaced detent or latch component
    • Y10T403/32336Engaging notch or recess in outer periphery of component
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/20Control lever and linkage systems
    • Y10T74/20576Elements
    • Y10T74/20636Detents
    • Y10T74/20672Lever engaging rack

Definitions

  • the present invention relates to an adjustable hinge fitting for collapsible stands or frames, especially of chairs, reclining chairs, camping equipment, sales stands, frames, or the like which consists of a pair of hinge arms which are adjustable to different angular positions relative to each other and are connected to each other by means of a strap which is pivotably mounted at both ends, and of a locking member on one hinge arm which in its operative positions automatically produces a locking action in association with a counterpart on the other hinge member.
  • the conventional hinge fittings of this type when applied, for example, on reclining chairs or the like, especially of the kind as used for camping purposes which have a one-piece cover, have the disadvantage that it may easily occur that the adjustable back rest will suddenly be released so as to jump upwardly so that a person who is sitting down on the central part of the chair and thereby tightens the cover may then be hit on the head.
  • pivotable locking pawl of the known hinge fittings is moved to the inactive position by an automatically acting device in cooperation with a spring, in which position it is then arrested until the back rest is again swiveled back to its original position. Consequently, if this spring breaks or fails to work, the automatic device is also inoperative.
  • one hinge arm of the new hinge fitting forms a double arm, and the short arm thereof carries a locking mem her and a bracing surface, while the other hinge arm is provided with a contact surface, for example, of an arcuate shape, in such a position that, when the adjustable hinge arm is pivoted upwardly from its lowest to its highest operative position, the bracing surface will engage against and then slide along the inner or outer side of the contact surface.
  • the contact pressure produced by the lever action then results in a braking effect which prevents any sudden unintentional upward swiveling of the adjustable back rest.
  • This braking effect also depends upon the frictional resistance produced when the 3,232,136 Patented Feb. 1, 1966 ing member enters into its counterpart under the lever action of the adjustable hinge armfl '5
  • the hinge fitting is preferably designed so that the strap is provided adjacent to the pivoting point with a sector-shaped locking edge which is, for example, of 'a U- or L-shape either by being bent or by being provided with a suitable recess.
  • This locking edge is'adapted; to cooperate with at least one locking projectionon a fur ther hinge arm which is pivotably connected to the fixed hinge arm and is .adapted to be locked against a pivoting movement in either direction.
  • the control means of'a hinge fitting according to the invention which operate automatically without a spring and are adaptedto prevent the locking effect -durin g the re turn movement of the adjustable back rest to its lowest operative position, may be made of a very simple construction which is very reliable in operation. Furthermore,'the hinge fitting according to the invention forms a very corn pact unit which does not show any projections even when the adjustable back or foot rest is in a downwardly in clined operative position, and which does not noticeably project beyond the seating or reposing surface.
  • FIGURE 1 is a longitudinal view of an adjustable and lockable hinge fitting according to the invention,-taken along a line extending through the axes of the hinge arms and at right angles to the hinge axis, and i t'illustrates'the hinge fitting in the operative position of a reclining chair or the like when the back or foot rest thereof is in its lowest operative position;
  • FIGURE 2 shows a view similar to FIGURE 1 of the hinge fitting in which the hinge arms are'indie'ated in dotand-dash lines, are disposed in the collapsed position of the reclining chair, while the full lines illustrate the operative position of the chair leg or of the lockable hinge arm and the upper pivoted position of the adjustable back or foot rest before it is pivoted downwardly;
  • FIGURE 3 shows another View similar to FIGURE 1 in which the adjustable back or foot res-t is disposed in an uplocked intermediate position while being swiveled downwardly to its lowest operative position and while the chair leg is locked;
  • FIGURE 4 shows a cross section taken along line II of FiGURE 3;
  • FIGURE 5 is an exploded view.
  • the hinge fitting according to the invention is shown to consist of a fixed hinge arm 1 which may be secured, for example, to the central part of a reclining chair, a second hinge arm 2 which is adjustable to different angular positions and may be secured to the back rest or to the foot rest of the chair, and a third hinge arm 3 which serves as a leg of the reclining chair and may be locked to prevent any pivota movement thereof in either direction.
  • the fixed hinge arm 1 carries a rivet 4 on which hinge arm 3 which is adapted to be locked is pivotably mounted, and separately herefrorn it also carries at the main pivoting axis of the hinge fitting a rivet 5 on which two straps 6 are pivotably mounted which, in turn, are pivotably connected at their other ends by a rivet 7 to the adjust a able hinge arm 2.
  • Rivet also serves as a bearing pin for the control levers 8 which are rotatable between the straps 6.
  • Rivet 5 and rivet 4 also have rigidly se-' cured thereto a pair of ratchet disks 1%) which are disposed between the two side walls 2 of hinge arm 1 and at both sides of straps 6 or of hinge arm 3, respectively. In the modification according to FIGURE 5, these ratchet disks 16 are omitted.
  • the short lever arm 11 of hinge arm 2 is provided with serrated or wedge-shaped locking members 12 and laterally directed supporting or bracing surfaces 13.
  • the edges of side walls 9 of hinge arm 1 up to their upper edges 15, as shown in FIGURES l and 2, are bent inwardly and form arcuate contact surfaces 14.
  • the inner faces of bracing surfaces 13, in turn, can engage with the outer tips of bracing arm 16 on control levers 8.
  • Arm-s 16 can also engage with the upper stop portion 17 on ratchet disk 10, as shown in FIGURE 2, while the lower stop portion 18 on ratchet disk can be engaged by the stop arm 19 on control lever 8.
  • Hinge arm 3 which is adapted to be locked is provided at the area of straps 6 with a pair of arcuate, inwardly bent locking projections 26 which, in the operative position of hinge arm 3, engage into the sector-shaped locking edges 21 of straps 6 which are both of a U-shaped cross section, as shown in FIGURE 4.
  • the adjustable hinge arm 2 changes from a U- shaped to a round cross section, it is provided with a stop portion 22 which is associated with straps 6 and limits the range of the pivotal movement of hinge arm 2 about rivet 7 in a clock-wise direction (FIGURE 2).
  • the end of the short lever arm 11 of hinge arm 2 is also beveled in the direction toward the center of straps 6 so that, when hinge arm 2 is pivoted toward the rear (counterclockwise in FIG. 2), the point 23 of arm 11 from the axis of rotation on rivet 7 will first engage with the teeth of ratchet disc 10.
  • the adjustable hinge arm 2 which may be secured for example, to the back rest of the reclining chair, by being pivoted in the upward direction, as shown by the arrow in FIGURE 1, since it carries control lever 8 along with it, may now be adjusted from this lowest operative position to any of the angular positions in accordance with the teeth of the ratchet disks 16.
  • hinge arm 2 turns at first about rivet 7 until the outer end of its bracing surface 13 engages against the inside of the contact surface 14 and then slides along the same, at which time the pivot point on rivet 7 becomes inoperative and straps 6 instead pivot together with control lever 3 about rivet 5.
  • hinge arm 2 When hinge arm 2 is in the desired angular position and is then pivoted slightly downwardly either by hand or by a load, locking member 12 engages into the locking disk 10.
  • bracing arms 16 of control lever 8 which so far has been taken along rictionally, is arrested by engagement with the upper stop portion 17 (see FIGURE 2), and the bracing surfaces 13 then engage over the bracing arms 16. From this position it is now possible to pivot the adjustable hinge arm 2 according to FIGURE 3 back to its lowest operative position according to FIGURE 1.
  • bracing surfaces 13 and point 23 on lever arm 11 disengage from the outer edge 15 of contact surfaces 145, so that rotation of strap 6 on rivet 5 stops, while hinge arm 2 continues to turn about rivet 7 until its stop portion 22 engages against straps 6 and pivots the same to their final position, hinge arm 3 in the meanwhile having been unlocked by disengagement of projections 20 from projections 21.
  • hinge arm 3 which is adapted to be locked is provided with a pair of inversely similar locking projections 219. It is therefore also possible also to mount on rivet 5 two locking hinge arms 3, each of which has only one locking projection 20 which is inversely similar to the other, and in such a manner that these hinge arms may be pivoted either separately or together to their operative or inoperative positions and many also be locked in either direction of movement. Similarly, it is also possible to mount each of two inversely similar hinge arms 2, which are adjustable independently of each other, individually on at least one strap 6 which is inversely similar to the other strap.
  • straps 6 may then together he pivotably mounted at their other end on the fixed hinge arm 1 by means of rivet 5, and hinge members 2 will then be operatively associated with inversely similar control means 8 or 14 and stop members 17 and 18.
  • This embodiment of the invention may be applied particularly to collapsible frames for sales stands, sport utensils, tent frames, or the like.
  • the two-armed hinge member 2 may also be utilized as a fixed hinge arm.
  • the hinge fitting according to the invention may be made of steel or plastic, or partly of one and partly of the other material. When it is made of plastic, it is also possible to reinforce it by steel inserts which are embedded therein.
  • means mounting the first arm on the second arm for adjustment with respect thereto to a plurality of operative positions and an inoperative position comprising a strap member, first means pivotally securing one end of said strap member to the first arm and second means spaced from said first means pivotally securing the other end of said strap member to said second arm, a control lever having spaced first and second elements, pivotally mounted on said first pivotally securing means and frictionally engaging said strap member for normally moving therewith, a part fixed to said first arm having a first locking section thereon, said second arm having a second locking section rigid therewith engageable with said first locking section upon turning of the second arm about said second pivotally securing means in a first direction, said first arm having first stop means thereon engaged by the first element of said control lever as said second arm approaches its furthest operative position in the direction opposite the first direction, whereby said second arm turns with respect to said control lever in said opposite direction, said second arm having shoulder means thereon displaced out of the plane of said second locking
  • a third arm pivotally mounted on said first arm for movement between operative and inoperative positions, said strap and said third arm having cooperating means thereon to lock said third arm in operative position when said strap turns in said first direction about said first pivot means.
  • said first and second elements comprising spaced projections on said control lever having a gap therebetween, said shoulder means being movable into said gap when said turning limiting means are released.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Dentistry (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
US77596A 1959-12-24 1960-12-22 Adjustable hinge fitting for collapsible stands, reclining chairs, and the like Expired - Lifetime US3232136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB61251A DE1204467B (de) 1959-12-24 1959-12-24 Einstell- und verriegelbares Gelenk fuer zusammenlegbare Gestellc von Sitz- und Liegemoebeln od. dgl.

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US3232136A true US3232136A (en) 1966-02-01

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US77596A Expired - Lifetime US3232136A (en) 1959-12-24 1960-12-22 Adjustable hinge fitting for collapsible stands, reclining chairs, and the like

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Country Link
US (1) US3232136A (enrdf_load_stackoverflow)
BE (1) BE598484A (enrdf_load_stackoverflow)
CH (1) CH390487A (enrdf_load_stackoverflow)
DE (1) DE1204467B (enrdf_load_stackoverflow)
FR (1) FR1283344A (enrdf_load_stackoverflow)
GB (1) GB949976A (enrdf_load_stackoverflow)
NL (1) NL110893C (enrdf_load_stackoverflow)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342527A (en) * 1966-06-30 1967-09-19 Weber Knapp Co Seat back hinge-latch
US3352580A (en) * 1964-02-10 1967-11-14 Kurz Rudolf Adjustable joint
US3368847A (en) * 1965-01-14 1968-02-13 Zealand Engineering Company Lt Adjustable self-locking joints
US3910630A (en) * 1973-08-06 1975-10-07 Wilbur D Runyon Seat and couch structure
US3918822A (en) * 1973-11-23 1975-11-11 Gunter Rauschenberger Adjustable joint
US4058341A (en) * 1975-09-17 1977-11-15 Johannes Prins Collapsible chairs
US4196931A (en) * 1977-07-30 1980-04-08 Keiper Automobiltechnik Gmbh & Co. Kg Adjustable hinge for a backrest of a vehicle seat
US4516442A (en) * 1982-01-06 1985-05-14 Davis Duane L Ratchet device
US4565404A (en) * 1981-07-23 1986-01-21 Joerg Rauschenberger Hinge
US4655501A (en) * 1985-07-25 1987-04-07 Nhk Spring Co., Ltd. Armrest of a seat
US4684278A (en) * 1985-03-28 1987-08-04 Rauschenberger Joerg Joint for use in collapsible chairs and the like
US5062731A (en) * 1990-02-08 1991-11-05 Macmillan Donald M Lockable/unlockable pivoted connection apparatus
US5169257A (en) * 1992-06-26 1992-12-08 Liou Shuen Yi Angle adjustable joint
US20040108764A1 (en) * 2002-08-07 2004-06-10 Rauschenberger Metallwaren Gmbh Articulation mechanism particularly for lounge chairs
US20110073723A1 (en) * 2009-09-25 2011-03-31 Ashpole Benjamin C Joint and foldable structures employing the same
US20150026645A1 (en) * 2013-07-18 2015-01-22 Dassault Systemes Computer-Implemented Method For Determining Exploded Paths Of An Exploded View Of An Assembly Of Three-Dimensional Modeled Objects
US20150274053A1 (en) * 2012-09-26 2015-10-01 Zodiac Seats Us Llc Adjustable footrest assembly
US20160040464A1 (en) * 2015-10-19 2016-02-11 Dongguan Weihong Hardware and Plastic Products Co. Ltd. Hinge
US20200214924A1 (en) * 2019-01-03 2020-07-09 Shanq-Ching Shieh Foldable Frame Construction for Mobility Aids
EP4014792A1 (en) * 2020-12-15 2022-06-22 Zhejiang Senying Leisure Products Co., Ltd. A multifunctional chair

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1253961C2 (de) * 1961-08-05 1978-06-15 Fa. Wilhelm Bahmüller, 7067 Plüderhausen Einstellbares gelenk, insbesondere fuer sitz- und liegemoebel
US4130028A (en) * 1977-06-09 1978-12-19 Angel Mork Pawl-and-ratchet catch
KR910000302Y1 (ko) * 1987-02-21 1991-01-18 장문수 절첩식 사다리용 경첩
US5392591A (en) * 1993-03-12 1995-02-28 International Packaging Incorporated Hay recompression and netting machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US773720A (en) * 1903-03-06 1904-11-01 Charles A Lee Adjusting mechanism for couch head-rests, &c.
GB190714023A (en) * 1907-06-18 1908-04-09 Hugh Cleland Improvements in Wind or Weather Screens for Motor Cars and other Vehicles.
US2391968A (en) * 1945-07-19 1946-01-01 Clarence H Heitman Hinge for shoe lasts
US2651352A (en) * 1949-01-13 1953-09-08 Harold H Beardsley Convertible cot and camp chair
US2911245A (en) * 1956-10-03 1959-11-03 Kurz Rudolf Joint

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1687278U (de) * 1953-11-02 1954-11-11 Wilhelm Bahmueller Selbsttaetige rasteinrichtung, insbesondere fuer gelenkig befestige teile, wie lehnen, deckel klappen, fenster od. dgl.

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US773720A (en) * 1903-03-06 1904-11-01 Charles A Lee Adjusting mechanism for couch head-rests, &c.
GB190714023A (en) * 1907-06-18 1908-04-09 Hugh Cleland Improvements in Wind or Weather Screens for Motor Cars and other Vehicles.
US2391968A (en) * 1945-07-19 1946-01-01 Clarence H Heitman Hinge for shoe lasts
US2651352A (en) * 1949-01-13 1953-09-08 Harold H Beardsley Convertible cot and camp chair
US2911245A (en) * 1956-10-03 1959-11-03 Kurz Rudolf Joint

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3352580A (en) * 1964-02-10 1967-11-14 Kurz Rudolf Adjustable joint
US3368847A (en) * 1965-01-14 1968-02-13 Zealand Engineering Company Lt Adjustable self-locking joints
US3342527A (en) * 1966-06-30 1967-09-19 Weber Knapp Co Seat back hinge-latch
US3910630A (en) * 1973-08-06 1975-10-07 Wilbur D Runyon Seat and couch structure
US3918822A (en) * 1973-11-23 1975-11-11 Gunter Rauschenberger Adjustable joint
US4058341A (en) * 1975-09-17 1977-11-15 Johannes Prins Collapsible chairs
US4196931A (en) * 1977-07-30 1980-04-08 Keiper Automobiltechnik Gmbh & Co. Kg Adjustable hinge for a backrest of a vehicle seat
US4565404A (en) * 1981-07-23 1986-01-21 Joerg Rauschenberger Hinge
US4516442A (en) * 1982-01-06 1985-05-14 Davis Duane L Ratchet device
US4684278A (en) * 1985-03-28 1987-08-04 Rauschenberger Joerg Joint for use in collapsible chairs and the like
US4655501A (en) * 1985-07-25 1987-04-07 Nhk Spring Co., Ltd. Armrest of a seat
US5062731A (en) * 1990-02-08 1991-11-05 Macmillan Donald M Lockable/unlockable pivoted connection apparatus
US5169257A (en) * 1992-06-26 1992-12-08 Liou Shuen Yi Angle adjustable joint
US6789848B2 (en) * 2002-08-07 2004-09-14 Rauschenberger Metallwaren Gmbh Articulation mechanism particularly for lounge chairs
US20040108764A1 (en) * 2002-08-07 2004-06-10 Rauschenberger Metallwaren Gmbh Articulation mechanism particularly for lounge chairs
US20110073723A1 (en) * 2009-09-25 2011-03-31 Ashpole Benjamin C Joint and foldable structures employing the same
US8899536B2 (en) 2009-09-25 2014-12-02 Benjamin ASHPOLE Joint and foldable structures employing the same
US9744894B2 (en) * 2012-09-26 2017-08-29 Zodiac Seats Us Llc Adjustable footrest assembly
US20150274053A1 (en) * 2012-09-26 2015-10-01 Zodiac Seats Us Llc Adjustable footrest assembly
US10346005B2 (en) * 2013-07-18 2019-07-09 Dassault Systemes Computer-implemented method for determining exploded paths of an exploded view of an assembly of three-dimensional modeled objects
US20150026645A1 (en) * 2013-07-18 2015-01-22 Dassault Systemes Computer-Implemented Method For Determining Exploded Paths Of An Exploded View Of An Assembly Of Three-Dimensional Modeled Objects
US9399421B2 (en) * 2015-10-19 2016-07-26 Dongguan Weihong Hardware And Plastic Products Co., Ltd. Hinge
US20160040464A1 (en) * 2015-10-19 2016-02-11 Dongguan Weihong Hardware and Plastic Products Co. Ltd. Hinge
US20200214924A1 (en) * 2019-01-03 2020-07-09 Shanq-Ching Shieh Foldable Frame Construction for Mobility Aids
US10765584B2 (en) * 2019-01-03 2020-09-08 Shanq-Ching Shieh Foldable frame construction for mobility aids
EP4014792A1 (en) * 2020-12-15 2022-06-22 Zhejiang Senying Leisure Products Co., Ltd. A multifunctional chair

Also Published As

Publication number Publication date
CH390487A (de) 1965-04-15
NL110893C (enrdf_load_stackoverflow) 1965-03-15
GB949976A (en) 1964-02-19
DE1204467B (de) 1965-11-04
BE598484A (fr) 1961-06-22
FR1283344A (fr) 1962-02-02

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