US3871083A - Folding door hardware - Google Patents

Folding door hardware Download PDF

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Publication number
US3871083A
US3871083A US422321A US42232173A US3871083A US 3871083 A US3871083 A US 3871083A US 422321 A US422321 A US 422321A US 42232173 A US42232173 A US 42232173A US 3871083 A US3871083 A US 3871083A
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Prior art keywords
panels
hinge
members
portions
panel
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Expired - Lifetime
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US422321A
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English (en)
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Lester L Smith
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Individual
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Individual
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Priority to US422321A priority Critical patent/US3871083A/en
Priority to CA214,501A priority patent/CA1019111A/fr
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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D5/00—Construction of single parts, e.g. the parts for attachment
    • E05D5/02—Parts for attachment, e.g. flaps
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D15/00—Suspension arrangements for wings
    • E05D15/26—Suspension arrangements for wings for folding wings
    • E05D15/264—Suspension arrangements for wings for folding wings for bi-fold wings
    • E05D15/266—Suspension arrangements for wings for folding wings for bi-fold wings comprising two pivots placed at opposite edges of the wing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/0009—Templates for marking the position of fittings on wings or frames
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/146—Shutters

Definitions

  • ABSTRACT Hinge and alignment hardware assemblies of molded, cast or drawn materials for hinge mounted doors, shutters and panels, particularly in folding door installations; the same having integral mounting means rendering the use of separate fastening devices, such as mounting screws and the like, extraneous, and comprising radially expandable plug portions insertable into socket openings formed in edge or face surfaces of the doors and panels and including means for positively locking the same in operating position.
  • Guide portions on the assemblies align and position the hardware in conjunction with the mounting plug portions and sockets while interlocking detent projections are provided on cooperating hinge members to retain adjacent panels in coplanar alignment.
  • Another important object of this invention is to provide improved hardware assemblies as aforesaid, which are dependable in use and exhibit economies of manufacture and installation.
  • FIG. 1 is a front elevational view of a folding door or panel installation utilizing the improved hinge and alignment hardware assemblies of my invention
  • FIG. 2 is an enlarged plan view of a hinge assembly of this invention edge mounted on a pair of door panels, as taken from vantage line 22 of FIG. 1;
  • FIG. 5 is perspective view of another hinge assembly according to this invention, illustrated in edge mounted condition intermediate the upper and lower ends of a pair of folding panels or doors,
  • FIG. 6 is a perspective view of one hing element of the assembly illustrated in FIG. 5;
  • FIG. 8 is a cross-sectional view taken substantially from vantage line 88 of FIG. 7;
  • FIG. 10 is another perspective view of one alignment member of the assembly illustrated in FIGS. 7 and 8;
  • FIG. 11 is a sectional view of a modified face mounted hinge assembly according to this invention.
  • FIG. 1 a structural wall or partition is provided with a door opening 16 as for example, the entrance to a closet.
  • a typical bi folding door installation is mounted across opening 16 to close over the same and in the particular case shown comprises four planar door panels 17, 18, 19 and 20.
  • the door panels 17 and 18 are hingedly interconnected as are the door panels 14 and 20 to provide a typical bi-folding door installation which, among other advantages, has the ability of providing substantially full access to the door opening, yet is capable of substantially closing over the same while requiring less space for swinging movements of the panels during the opening and closing operations.
  • panel 17 is supported by pivot members 30 and 31 which are axially aligned and located inwardly of one lateral edge thereof in close parallelism to jamb member 26.
  • Pivot member 30 is usually supported in the track member 29 as shown, while the lower pivot center 31 is normally supported on an angle bracket 32 carried by the floor sill 28 and the jamb member 26.
  • the opposite lateral edge 33 of panel 17 is mounted in spaced parallelism to the adjacent lateral edge 34 of panel 18 by improved hinge assemblies 35, 36 and 37 of this invention while a pivotal guide roller 38 is mounted to the upper edge 39 of panel 18 adjacent the opposite lateral margin 40 thereof for engagement with the track means 29 in a conventional and known fashion.
  • An improved alignment assembly 41 comprising a pair of alignment members 42 and 43 is mounted at the lower adjacent corners of the panels 18 and 19, to maintain such panels coplanar in their closed positions.
  • a bi-fold door installation of the type illustrated is preferably provided with the alignment assembly 41 composed of the individual members 42 and 43, one thereof being attached to each of the adjacent mid-panels l8 and 19.
  • the alignment assembly 41 serves to align the free edges of the two panels 18 and 19 in coplanar relationship and hold the door panels in proper position at and adjacent the lower ends thereof in cooperation with the roller guide means 38, 38 at the upper edges of such panels, to maintain a desired coplanar relationship therebetween in the closed condition of the door installation.
  • FIGS. 2, 3 and 4 of the drawings illustrating an upper or top hinge assembly 35.
  • the bottom hinge assembly 37 is substantially identical to the upper assembly 35 except that the individual members or elements thereof are inverted and reversably positioned so that a description of a top assembly will suffice for both.
  • hinge assembly 35 is made up of two unitary hinge members or elements 50 and 51, each preferably molded from thermoplastic material, such as Nylon, or alternatively cast or drawn from metal.
  • a male hinge element 50 has a generally planar body portion 52 of substantially square plan profile and of rectangular cross-section.
  • the bottom surface 53 of the body member 52 constitutes a planar guide surface adapted to abut the adjacent end surface of the door panel on which it is mounted, such as end surface 39 on panel 18.
  • Formed integrally with body portion 52 is a depending cylindrical mounting plug portion 55 for mounting the hinge element in an accurately located mounting socket 56 (see FIG. 3) formed inwardly of the end surface 39 of the door panel.
  • Plug portion 55 is distinguished by a generally tapered axial opening 57 extending centrally therethrough for reception of a tapered locking pin 58.
  • the central opening 57 also openly communicates with the exterior surface 59 of the mounting plug via a slotted aperture 60 which extends radially through the main body portion 52 for the full axial length of the mounting plug. Because of this construction, the walls of the body portion normally contract to close the slot 60 at its lower end. However, insertion of the locking pin 58 in opening 57 radially expands the walls of the plug portion to restore its cylindrical shape and positively lock the latter in the mounting socket 56.
  • the external wall 59 of the mounting plug portion is distinguished by one or more radially projecting ribs 62 and rows of locking barbs or teeth 63.
  • the same is somewhat tapered in external configuration due to the slotted opening 60 being closed at the lower end thereof as above noted.
  • theplug is readily insertable into the cylindrical socket 56.
  • driving the pin 58 into opening 57 causes radial expansion of its flexible wall portions to drive the teeth 63, and rib elements 62 into the side walls of the socket, preventing rotational movement of the plug portion in the socket.
  • body portion 52 of the hinge element 50 is also provided with an outwardly projecting hub portion 70, formed at one end of flange 65 and located outwardly of body portion 52.
  • Hub portion 70 also projects outwardly of the general plane of the flange wall 65 and is provided with a central axial bore opening for reception of a hinge pin 71 definitive of the hinge axis between the two hinge elements 50 and 51 in assembly.
  • the axis of the hinge pin 71 is located rearwardly of the rear face 67 of the door panels 18 opposite the gap between the opposing adjacent edges 33 and 34 of the interhinged panels 17 and 18 as best illustrated in FIG. 2.
  • the location of the hinge axis for the hinge elements is determined by the positioning of the mounting socket 56 relative to the edges of panels 17 and 18 and to that end the formation of the mounting sockets preferably is performed with an accurate jig or boring fixture so as to adapt such formation to machine operation, according to currently recognized practice.
  • one lateral edge or margin 73 thereof which, in the mounted position for hinge assembly 35, as illustrated in FIG. 2, lies closest to door edge 34 and the adjacent female hinge element 51, is configured with an outwardly extending finger portion 75 having a hook element 76 spaced from a recessed margin 77 located at the corner of the body portion 52 opposite the hub portion 70.
  • the outer margin of the finger portion is substantially coplanar with the hinge axis defined by the pin 71, for reasons which will appear presently.
  • female hinge element 51 includes a planar body portion 80 formed integrally with a depending mounting post portion 81 identical in all respects to the previously described post portion 55.
  • mounting post portion 81 is operatively arranged to receive a tapered pin 58 in opening 57 for radially expanding the same in accordance to the construction previously set forth.
  • female hinge element 51 incorporates an integrally formed flange or skirt wall portion 82 along the rearward marginal edge thereof; the same being formed at right angle relationship to the planar underface 83 of body portion 80 to fit tightly against the rear face 84 of panel member 17 in operation.
  • skirt wall portion 82 extends rearwardly at its intersection with edge 85 of the body portion to terminate in a cylindrical boss or hub 86 having a central axial opening therethrough and receptive of the hinge pin 71; hub 86 being registeringly disposed over the hub portion 70 of the male hinge element in assembly.
  • the marginal edge 85 of the body is distinguished by an outwardly projecting finger 87 having a hook element 88 opposite the hub 86 and adjacent an inwardly extending recess 89 provided to receive the finger portion 75 of the male hinge element when the same are in a closed hinge position as illustrated in FIG. 2.
  • the two hook elements 76 and 88 oppose one another and resiliently interlock in the closed position of the hinge elements; element 88 springing past the stiffer hook portion 76 during the opening and closing operations of. the hinge assembly.
  • the hook elements Once the hook elements are inter-engaged, as, illustrated in FIG. 2, the same act as a semi-positive holding detent means for maintaining the associated panels 17 and 18, inter-connected by the hinge assemblies 35 and 37, in planar closed condition against accidental opening. This happenstance occurs, for example, when one set of bifold panels is closed and the other set is closed suddenly to pressurize the air in the closet so that the outward rush of air has a tendency to open the closed panels at their hinge junctions.
  • separate hardware assemblies have been employed to prevent this accidental partial opening of the door panels.
  • the present unique system of interlocking hinge elements is believed to be a novel advancement in this art for overcoming this problem.
  • the location of the hinge axis at pin 71, rearwardly of the rear faces of panels 17 and 18 and the positioning of the skirtwalls 65 and 82 against the rear faces of such panels substantially hides the hinge assembly leaving only the leading edges of the body portions exposed to view from the door front.
  • the exposed portions of the top hinge assembly are relatively unobtrusive inasmuch as the same are at the upper ends of the doors and are generally hidden to the normal sight of the viewer.
  • the bottom hinge assembly 37 is mounted at and between bottom end edges of the door panels 17 and 18 to cooperate with the upper hinge assembly in determining the hinging movements of such panels about their respective hinge pins which are coaxially aligned. It further will be undcrstood that by utilizing an accurate jig boring setup, the location of the mounting sockets 56 in the end edges of the doors, is such as to maintain a desirable fixed mounting position for the hinge assemblies to insure a proper, but unsightly gapping or space between adjacent opposing edges 33 and 34 of the two panels 17 and 18. This problem in itself has been much cause for concern in bi-fold door assemblies in the past and of course is successfully confronted and solved by the hinge assembly of this invention.
  • assembly 36 comprises a top hinge element 90 and a bottom hinge element 91, which are identical in all respects.
  • the decription of the bottom hinge element 91 specifically shown in perspective in FIG. 6, will suffice for both.
  • Element 91 is formed, as with the hinge assemblies, of cast or drawn metal or molded plastic, and includes a planar body portion 93 substantially rectangular in configuration and of a thickness equal to or just slightly less than a desired gap or spacing between opposing lateral edges 33 and 34 of the panels 17 and 18, for example;
  • a mounting plug portion 95 is formed, identical in all respects with the mounting plug portions 55 and 81 of the hinge assembly 35 hereinabove described.
  • the mounting plug portion 95 is a generally cylindrical molded projection having an elongated axially extending opening 96 receptive of a tapered locking pin 97 and split by an axially extending slot 98 to permit radial flexing or contracting and expanding movements of the plug portion.
  • a plurality of barbs or teeth 99 project from the exterior surface of the mounting plug portion as in the previously described construction.
  • the uppper edge of the body portion 93 extends diametrically across the cylindrical formation of the mounting plug portion 95, bisecting the central opening 96 which also partially interrupts the body 93.
  • the outer or left hand end of the body portion 93 is formed with a cylindrical hub 100 having a central bore opening 101 therethrough for receiving a hinge pin 102 in its assembly with the upper hinge element (see FIG. 5).
  • the upper hinge element 90 of the intermediate hinge assembly 36 is identical to the lower hinge element 91 just described, being however reversibly positioned from the latter in assembly therewith so that the hub portion a thereof is axially superimposed over the hub portion 100 for reception of the hinge pin 102.
  • two bored sockets of cylindrical formation are formed inwardly of the door edges 33 and 34, the axes thereof being aligned for coaxially receiving the mounting plug portions 95 and 95a of the two hinge elements.
  • the locking pins 97 are driven into the central openings 96 to tightly lock the hinge elements in operating position so that their hinge axis, defined by pin 102, is coaxially aligned with the hinge pins of the top and bottom hinge assemblies 35 and 37 rearwardly of the back faces of the two panels 17 and 18.
  • the relatively thin body portions 93a and 93 of the two hinge elements 90 and 91 are disposed in the gap or space between the opposing door edges 33 and 34, with the body portion 93a of the upper hinge element 90 swinging registeringly over the body portion 93 of the lower hinge element in the closed position of the door panels.
  • edge-mounted intermediate hinge assembly 36 hereinabove described is preferred in most instances because of its relatively unobtrusive appearance when the door panels are closed, it is nevertheless quite apparent when the door panels are in their open position inasmuch as the lateral edges 33 and 34 of the adjacent panels 17 and 18 are then in full view to the onlooker.
  • a face mounted intermediate hinge assembly 106 may be utilized. From an examination of those'figures, it will be seen that the -modified face-mounted assembly 106 comprises male and female hinge elements 107 and 108, respectively. As shown best in FIG. 12, the male element 107 has a generally planar body portion 109 of substantially rectangular profile with a medially located projection 110 at one end thereof and comprising a cylindrical hub for reception of a hinge pin 111.
  • a mounting plug portion 113 Spaced laterally from the hub porton 1 10 and extending'rearwardly of the back face 112 of body portion 109 is a mounting plug portion 113, adapted to fit into a bored socket l 14 formed inwardly of the face 67 of door panel 18, for example.
  • the exterior of plug portion 113 is generally cylindrical and provided with rows of projecting teeth 115.
  • a slot 116 splits the body of the plug portion and an axially extending central opening 1 17 receives a locking pin 118, as in the mounting plug portions previously described hereinabove.
  • the axially extent of the plug portion 113 is somewhat foreshortened from that described in association with the top and bottom hinge assemblies 35 and 37 and the intermediate assembly 36. Therefore, the mounting sockets 114 therefor are commensurately foreshortened. Be that as it may, the operation of the mounting plug portion and the locking pin 1 18 therefor is identical to that described hereinabove.
  • the female hinge element 108 is formed substantially identical to that of the male element 107 with the exception that the body portion 120 thereof is formed with a pair of spaced hub portions 121 and 122 at the upper and lower corners of one marginal edge 123 thereof; the spacing between the portions 121 and 122 being such as to accommodate the linear extent of the hub portion 110 on the male hinge element 107.
  • hub portion 110 of the male hinge element is interfitted between the separated hub portions 121 and 122 of the female hinge element for reception of the hinge pin 111 therethrough.
  • the hinge pin 111 is disposed opposite the gap between opposing edges 33 and 34 of the adjacent door panels 17 and 18, for example, with such location of the hinge axis being determined by the location of the mounting sockets 114 which preferably are formed by machine in a boring jig for accuracy of alignment.
  • the face mounted intermedate hinge assembly 106 is a ready substitute for the edge-mounted intermediate hinge assembly 36 of FIG. and is the full operational equivalent thereof comprising the same concept and mode of attaching the same to the door panels, via the mounting plug portions and locking pins.
  • FIGS. 7 through 10 of the drawings the same comprises an alignment assembly which is illustrated best in FIGS. 7 through 10 of the drawings.
  • the alignment assembly 41 is typically disposed between the lower corners of adjacent door panels of opposing pairs in a bi-fold door installation, such as panels 18 and 19 illustrated in FIG. 1. Assembly 41 serves to align adjacently opposing panels in coplanar condition when the doors are closed. A better understanding of the functioning and structure of the alignment assembly 41 will be gained by initial examination of FIGS. 9 and 10 of the drawings.
  • the right-hand alignment member 42 of assembly 41 comprises a planar body portion 125 having a mounting plug portion 126 projecting upwardly of the upper face thereof for reception in a mounting socket 127 formed inwardly of the bottom edge 128 of the right hand door panel 18 in the four door panel installation illustrated in FIG. 1.
  • the mounting portion 126 is split, has externally projecting teeth and receives a mounting or locking pin 130 through a central axially opening 131 therein, all in the manner of that described previously in association with the hinge assemblies 35 and 36, for example.
  • Wall portion 132 Projecting outwardly of the rearward margin of body portion 125 is an upwardly extending right-angularly disposed wall or flange 132 having a planar face adapted to closely hug and fit against the rearward face of the door panel 18, in the same manner as the wall portions 65 and 82 associated with the top and bottom hinge assemblies 35 and 37 (see FIG. 8).
  • Wall portion 132 is formed integrally with a lateral extending coplanar narrowed arm portion 133 which is aligned with the upper edge of the wall portion 132 and extends a distance sufficient to bridge the gap 135 between the adjacently opposed edges 40 and 40a of the door panels 18 and 19 in operation (see FIG. 8).
  • the outer end of the arm portion 133 is angled rearwardly at substantially 45 to provide a guide finger portion 136.
  • This finger portion is adapted to resiliently engage the rear corner edge of the left hand panel 19 or that is, the intersection of face 137 and the edge 40a thereof to guide the panel 19 forwardly during its closing movements so as to engage the rearward face 137 thereof with the inside face 138 of the arm portion 133 when the doors are closed.
  • the material from which the guide element 42 is fashioned preferably is a thermoplastic material, such as Nylon, it has relatively good flexibility.
  • arm 133 is slightly flexed rearwardly when engaged by the face 137 of panel 19, closely hugging the same and keeping panel 19 aligned nicely with the rear face of panel 18.
  • the left hand guide member 43 of the assembly 41 is substantially identical to the right hand guide element 42 just described, with the exception that the guiding arm portion 140 thereof, and consequently the projecting angulated finger portion 141 attached thereto, projects outwardly from near the bottom marginal corner of its flange wall 142 substantially where the latter intersects of the main body 143 of member 43. With this arrangement it clears the arm and finger portions 133 and 136 of the right hand guide member 42 when the two doors 18 and 19 are moved toward their closed positions. (See FIGS. '7 and 8).
  • the left hand member 43 of assembly 41 includes an upwardly projecting split mounting plug portion 145 to enter a bored mounting socket 146 formed inwardly of the bottom edge 147 of the left hand door panel 19 for mounting member 43 in operating position.
  • a locking pin 130 as utilized with the right band member 42, is employed to securely lock the member 43 to the door panel 19 by radially expanding the split mounting plug portion 45 inside of socket 146.
  • a hardware assembly comprising: a pair of molded members adapted to be cooperatingly mounted on adjacent panels, each said member having a body portion formed with a planar guide surface engagable with a planar surface of a said panel on which its associated said member is mounted, a genrally culindrical radially flexible plug portion formed integrally with said body portion and extending perpendicularly outward of said guide surface thereon, said plug portion having externally projecting barbs and a central axial opening extending therethrough and said body portion; said plug portion being insertable into a cylindrical mounting socket formed inwardly of said planar surface of said panel, and tapered pin means insertable through said body portion into said axial opening for radially expanding said plug portion in said socket thereby to securely set said barbs and anchor its said associated member to said panel.
  • a hardware assembly comprising: a pair of molded hinge members cooperatingly mounted on adjacent panels for movement about a hinge axis therebetween, each said hinge member having a body portion formed with a planar guide surface engageable with a planar surface of one of said panels, a radially expandable and contractable plug portion formed integrally with said body portion and extending perpendicularly outward of said guide surface thereon, said plug portion being axially insertable when in a radially contracted condition into a cylindrical mounting socket therefor formed inwardly of said planar surface on a said panel, means for radially expanding said plug portion to activate means for resisting removal thereof from a said socket thereby to secure its associated said member to said panel, and detent means having cooperating interlocking portions on each of said members and operable to restrain movement thereof about said axis.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hinges (AREA)
US422321A 1973-12-06 1973-12-06 Folding door hardware Expired - Lifetime US3871083A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US422321A US3871083A (en) 1973-12-06 1973-12-06 Folding door hardware
CA214,501A CA1019111A (fr) 1973-12-06 1974-11-25 Ferrures pour porte pliante

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Application Number Priority Date Filing Date Title
US422321A US3871083A (en) 1973-12-06 1973-12-06 Folding door hardware

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US3871083A true US3871083A (en) 1975-03-18

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US422321A Expired - Lifetime US3871083A (en) 1973-12-06 1973-12-06 Folding door hardware

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932455A (en) * 1989-04-03 1990-06-12 Kabushiki Kaisha Murakoshi Seiko Folding door apparatus
GB2238345A (en) * 1989-10-13 1991-05-29 Remploy Ltd Hinge
US20040211032A1 (en) * 2003-04-22 2004-10-28 Rojic Richard Joseph Consealed sliding hinge
US20110005691A1 (en) * 2009-07-13 2011-01-13 Malte Schneider Accordion partition
US20180273157A1 (en) * 2017-03-21 2018-09-27 Driessen Aerospace Group N.V. Galley trolley compartment doors
KR102176425B1 (ko) * 2019-05-23 2020-11-09 (주)다우솔루션 접이식문 경첩장치 및 레일이동부접이식문경첩장치와 그를 이용한 접이식문
KR20200135240A (ko) * 2020-09-24 2020-12-02 (주)다우솔루션 접이식문 경첩장치 및 레일이동부접이식문경첩장치와 그를 이용한 접이식문

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735133A (en) * 1956-02-21 Huebner
US3597790A (en) * 1968-11-29 1971-08-10 Acme General Corp Folding door hardware

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735133A (en) * 1956-02-21 Huebner
US3597790A (en) * 1968-11-29 1971-08-10 Acme General Corp Folding door hardware

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4932455A (en) * 1989-04-03 1990-06-12 Kabushiki Kaisha Murakoshi Seiko Folding door apparatus
GB2238345A (en) * 1989-10-13 1991-05-29 Remploy Ltd Hinge
US20040211032A1 (en) * 2003-04-22 2004-10-28 Rojic Richard Joseph Consealed sliding hinge
US20110005691A1 (en) * 2009-07-13 2011-01-13 Malte Schneider Accordion partition
US8109315B2 (en) * 2009-07-13 2012-02-07 Sunflex Aluminiumsysteme Gmbh Accordion partition
US20180273157A1 (en) * 2017-03-21 2018-09-27 Driessen Aerospace Group N.V. Galley trolley compartment doors
US10907390B2 (en) * 2017-03-21 2021-02-02 Safran Cabin Netherlands N.v. Galley trolley compartment doors
KR102176425B1 (ko) * 2019-05-23 2020-11-09 (주)다우솔루션 접이식문 경첩장치 및 레일이동부접이식문경첩장치와 그를 이용한 접이식문
KR20200135240A (ko) * 2020-09-24 2020-12-02 (주)다우솔루션 접이식문 경첩장치 및 레일이동부접이식문경첩장치와 그를 이용한 접이식문

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Publication number Publication date
CA1019111A (fr) 1977-10-18

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