US3385344A - Bi-fold door structure - Google Patents
Bi-fold door structure Download PDFInfo
- Publication number
- US3385344A US3385344A US533290A US53329066A US3385344A US 3385344 A US3385344 A US 3385344A US 533290 A US533290 A US 533290A US 53329066 A US53329066 A US 53329066A US 3385344 A US3385344 A US 3385344A
- Authority
- US
- United States
- Prior art keywords
- panels
- spring
- panel
- hinge joint
- door structure
- 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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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
- E06B3/48—Wings connected at their edges, e.g. foldable wings
- E06B3/481—Wings foldable in a zig-zag manner or bi-fold wings
Definitions
- the invention has to do with means for yieldingly maintaining the panels in bi-fold doors in closed position, or open position.
- the invention consists of a bowed leaf spring, the ends of which are interlocked with a pair of adjacent door panels.
- the spring spans the joint between the panels of the pair, with the concave side of the spring confronting the joint between the panels.
- the ends of the spring are interlocked with the panels intermediate the thickness thereof.
- the spring is under tension whereby the spring exerts a pressure on the panels in a direction toward the joint between the panels. Accordingly, when the panels are in close linear relationship, the spring resists movement of the panels about their hinge joint due to the fact that the ends of the spring are connected to the panels within the thickness thereof.
- the engagement between the ends of the spring and the panels has moved to the oppositeside of the hinge pintle, whereby the panels are yieldingly maintained in open position.
- This invention relates to bi-fold door structures, said structures include at least one pair of panel members which are hinged together along their vertical edges.
- One panel member is provided adjacent its free vertical edge with pintle pins extending from its top and bottom edges.
- the second panel is provided at its top and bottom edges with rollers movable in tracks fixedly mounted at the top and bottom of the door opening.
- This invention has as an object a bi-fold door structure embodying an arrangement which functions to consistent ly exert a uniform pressure on the door panels when they are moved to co-planar closed position, whereby 3,385,344 Patented May 28, 1968 they are maintained in that position, in like manner, when the bi-fold door panels are moved to open position, they are maintained in that position.
- FIGURE 1 is an elevational view of the inner side of a bi-fold door structure embodying my invention, with the door panels being shown in closed position.
- FIGURE 2 is a view taken on line 22, FIGURE 1.
- FIGURE 3 is a view, similar to FIGURE 2, showing the door panels moved to open position.
- FIGURE 4 is a fragmentary sectional view taken on line 44, FIGURE 1.
- the door structure includes a pair of panels 15, 16, joined along their vertical edges by a hinge joint including hinges 18.
- the panel 15 is provided with pintle pins 20 extending from its upper and lower edges into the track members 13, 14.
- the pintles 20 are located in spaced relation to the hinge joint, indicated by the line 21.
- the panel 16 is provided with pins 23 extending from its upper and lower edges and provided with rollers movable in the upper and lower tracks 13, 14.
- the panels 15, 16, include a rectangular framework having vertically disposed side members 24, and cross members 25.
- the members 24, 25, are of rectangular tubular formation, see FIGURES 2. and 3, and are connected together at the corners of the panels by gusset members 27.
- the tubular side members 24, at each side of the hinge joint 21, are formed with apertures 30, these apertures being located within the thickness of the panels-that is, intermediate the inner and outer side surfaces thereof.
- the hinges 18 are mounted on the inner side surfaces of the panels, so that the hinge pintle 33 is located at the inner side surface of the panels.
- a U-shaped spring member 35 is connected to the panels 15, 16.
- the spring member spans the hinge joint 21 and is arranged in confronting relation thereto.
- the spring 35 is formed at its ends with inwardly bent tang portions 37 extending into the apertures 30.
- the spring 35 exerts a yielding pressure against the panels 15, 16, toward the hinge joint, and that this pressure is applied at one side of the hinge pintle 33. With the panels in the closed co-planar position, shown in FIGURE 2, this yielding pressure is applied to the panels outwardly of the hinge joint pintles 33, and is effective to maintain the panels in the closed relationship.
- a bi-fold door structure for a door opening comprising upper and lower track members fixedly mounted at the top and bottom of the door opening and extending between the sides thereof, first and second panel members connected together along their vertical edges by a hinge joint, said first panel being provided with vertically aligned pintle pins extending from the upper and lower edges of the panel in spaced relation to said hinge joint, said pintle pins extending into said tracks and forming means for pivotally mounting said first panel in said opening, said second panel being provided at its upper and lower edges with vertically aligned rollers in spaced relation to said hinge joint and movable along said upper and lower tracks, all whereby said first and second panels are movable from a co-planar closed relation to an acute angle open relation, the axis of said hinge joint being located at one side surface of said panels, a U-shaped spring member spanning said hinge joint in confronting relation thereto, the ends of said spring member being fixed to said 4 1 panels intermediate the side surfaces thereof, said spring member being operable to exert yielding pressure on said panels toward
- a bi-fold door structure as set forth in claim 1, wherein said panels are formed with apertures adjacent said hinge joint at opposite sides thereof, and located intermediate the side surfaces of the panels, and the ends of said spring member are formed with inwardly bent portions extending into said apertures.
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US533290A US3385344A (en) | 1966-03-10 | 1966-03-10 | Bi-fold door structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US533290A US3385344A (en) | 1966-03-10 | 1966-03-10 | Bi-fold door structure |
Publications (1)
Publication Number | Publication Date |
---|---|
US3385344A true US3385344A (en) | 1968-05-28 |
Family
ID=24125308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US533290A Expired - Lifetime US3385344A (en) | 1966-03-10 | 1966-03-10 | Bi-fold door structure |
Country Status (1)
Country | Link |
---|---|
US (1) | US3385344A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4070727A (en) * | 1976-06-29 | 1978-01-31 | Kazuyoshi Kanou | Device for automatic door closing |
EP0014361A1 (en) * | 1979-02-01 | 1980-08-20 | Manfred Greschbach | Slidable folding door |
FR2577011A1 (en) * | 1985-02-01 | 1986-08-08 | Lezoda Sa | Sheet metal stiffener |
US5070926A (en) * | 1988-07-26 | 1991-12-10 | Paul Hettich Gmbh & Co. | Folding door with several pairs of panels |
US5242005A (en) * | 1991-11-15 | 1993-09-07 | Optima, Inc. | Breakaway bi-folding door assembly |
US5435372A (en) * | 1993-06-23 | 1995-07-25 | Jamco Corporation | Smooth opening/closing multiple panel folding spring, or the like, biased folding doors |
US6173476B1 (en) * | 1998-08-28 | 2001-01-16 | Avaya Technology Corp. | Hinge assembly particularly suited for grounding |
US9695623B2 (en) * | 2015-09-09 | 2017-07-04 | Derek Keith Thomas | Powered folding doors |
US20180320432A1 (en) * | 2017-05-05 | 2018-11-08 | Modernfold, Inc. | Anti-float systems and methods |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US57240A (en) * | 1866-08-14 | Improvement in door-springs | ||
US1381744A (en) * | 1920-07-29 | 1921-06-14 | Leo A Riggs | Collapsible door |
GB521705A (en) * | 1938-11-22 | 1940-05-29 | Edward Claude Leachman | Improvements in or relating to the closing and controlling of doors |
US2514033A (en) * | 1945-07-04 | 1950-07-04 | Budd Co | Door operator |
US2943675A (en) * | 1957-08-05 | 1960-07-05 | William A Ternes | Door |
US3116782A (en) * | 1958-09-08 | 1964-01-07 | Rudnick Jack | Folding door hold means |
US3170506A (en) * | 1962-04-16 | 1965-02-23 | Fenestra Inc | Door structure |
-
1966
- 1966-03-10 US US533290A patent/US3385344A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US57240A (en) * | 1866-08-14 | Improvement in door-springs | ||
US1381744A (en) * | 1920-07-29 | 1921-06-14 | Leo A Riggs | Collapsible door |
GB521705A (en) * | 1938-11-22 | 1940-05-29 | Edward Claude Leachman | Improvements in or relating to the closing and controlling of doors |
US2514033A (en) * | 1945-07-04 | 1950-07-04 | Budd Co | Door operator |
US2943675A (en) * | 1957-08-05 | 1960-07-05 | William A Ternes | Door |
US3116782A (en) * | 1958-09-08 | 1964-01-07 | Rudnick Jack | Folding door hold means |
US3170506A (en) * | 1962-04-16 | 1965-02-23 | Fenestra Inc | Door structure |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4070727A (en) * | 1976-06-29 | 1978-01-31 | Kazuyoshi Kanou | Device for automatic door closing |
EP0014361A1 (en) * | 1979-02-01 | 1980-08-20 | Manfred Greschbach | Slidable folding door |
US4387760A (en) * | 1979-02-01 | 1983-06-14 | Manfred Greschbach | Sliding folding door |
FR2577011A1 (en) * | 1985-02-01 | 1986-08-08 | Lezoda Sa | Sheet metal stiffener |
US5070926A (en) * | 1988-07-26 | 1991-12-10 | Paul Hettich Gmbh & Co. | Folding door with several pairs of panels |
US5242005A (en) * | 1991-11-15 | 1993-09-07 | Optima, Inc. | Breakaway bi-folding door assembly |
US5435372A (en) * | 1993-06-23 | 1995-07-25 | Jamco Corporation | Smooth opening/closing multiple panel folding spring, or the like, biased folding doors |
US6173476B1 (en) * | 1998-08-28 | 2001-01-16 | Avaya Technology Corp. | Hinge assembly particularly suited for grounding |
US9695623B2 (en) * | 2015-09-09 | 2017-07-04 | Derek Keith Thomas | Powered folding doors |
US20180320432A1 (en) * | 2017-05-05 | 2018-11-08 | Modernfold, Inc. | Anti-float systems and methods |
US10669772B2 (en) * | 2017-05-05 | 2020-06-02 | Modernfold, Inc. | Anti-float systems and methods |
US11111716B2 (en) | 2017-05-05 | 2021-09-07 | Modernfold, Inc. | Anti-float systems and methods |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HARROW SECURITIES, INC., A CORP. OF DE. Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:LEIGH PRODUCTS, INC.;REEL/FRAME:003972/0658 Effective date: 19811013 Owner name: LEIGH PRODUCTS, INC., Free format text: MERGER;ASSIGNOR:LEIGH PRODUCTS, INC., INTO;REEL/FRAME:003972/0662 Effective date: 19790802 Owner name: HARROW SECURITIES, INC., A CORP. OF, DELAWARE Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:LEIGH PRODUCTS, INC.;REEL/FRAME:003972/0658 Effective date: 19811013 Owner name: LEIGH PRODUCTS, INC.,, MICHIGAN Free format text: MERGER;ASSIGNOR:LEIGH PRODUCTS, INC., INTO;REEL/FRAME:003972/0662 Effective date: 19790802 |
|
AS | Assignment |
Owner name: HARROW PRODUCTS, INC. Free format text: CHANGE OF NAME;ASSIGNOR:LEIGH PRODUCTS, INC;REEL/FRAME:004324/0944 Effective date: 19840905 |