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US4015778A
Expired / Lapsed
US
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Multifunctional folding chair
Assignee: Individual
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Filing: 1976-01-26
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Granted: 1977-04-05
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Expires: 1996-01-26
Abstract
Abstract A multifunctional outdoor folding chair comprising two generally U-shaped open frames, one major and outer and the other minor and inner, braced pivotally one within the other to support a detachable seat which, in turn, supports pivotally a detachable back panel. The two frames are braced at points generally midway between the ends of the paired cross legs thereof by a common fastener. Rows of bosses under the seat serve to connect with locking channels on the planar top portions of the two frames, and the chair height can be adjusted by choosing the appropriate boss row for connection with the major frame. A storage chamber is attached between the leg portions of the minor frame adjacent the lower ends, and another storage shelf is built onto the undersurface of the seat. The back panel, by means of angle joints at the rear end thereof, is mounted onto the seat through locking slits thereon. Different game board patterns are printed on the top of the seat, and on the back and the front of the back panel. Under the extended operative condition of the chair, an overlapping double seat is formed when the back panel is turned downward to fold upon the seat. To fold the chair, the double seat is disengaged from the major frame and folded upon the minor frame, and the overlapping complex of these three members is folded within the boundaries of the major frame in maximum compactness. Coinciding rectangular cutouts formed along one lateral side of the double seat provide a space for the adjacent leg pair to serve as a handle for carrying the folded chair.
Inventors
- 👤 Helen Ho-Chiu Chen
- 👤 David Wan-Ching Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:52
CPC Classifications
A; A47; A47C; A47C13/00; A47C4/00; A47C4/04; A47C4/18; A47C4/20; A47C4/24; A63; A63F; A63F3/00; A63F3/00895
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
334 words
A multifunctional, height adjustable folding chair comprising: two generally U-shaped open frames, one outer and major and the other inner and minor, with perpendicular locking channels formed on the planar top portions thereof and horizontal slots formed adjacent the lower ends of the leg portions of said minor frame, braced one within the other by a transverse common fastener through lateral holes formed at points generally midway between the ends of the paired legs of said chair; a flat, generally rectangular seat, which has a game board pattern printed on the top, three locking slits formed adjacent the rear end, a rectangular cutout formed on one lateral side and a storage shelf built onto the undersurface, connected pivotally and detachably at the rear end by a transverse row of bosses on its undersurface to said minor frame through said locking channels thereon, and connected detachably at the frontal end by a choice of three transverse rows of bosses on its undersurface to said major frame through said locking channels thereon, in the extended operative condition of said chair; a flat, nearly square back panel, which has game board patterns printed on the back and the front thereof different from each other and from said pattern on said seat, and also has a rectangular cutout on one lateral side to correspond with said rectangular cutout on said seat, connected pivotally and detachably by three angle joints at the rear end thereof to said seat through said locking slits thereon; a rectangular storage chamber mounted between said leg portions of said minor frame adjacent the lower ends thereof through said slots thereon; members being dimensioned to fit one another, such that in switching from the extended position of said chair to the folded position, said back panel is folded over said seat which is then disengaged from the top of said major frame and folded over said minor frame which in turn is folded along with all other members within the boundaries of said major frame.
Claim 2
Dependent Claim
334 words
A multifunctional, height adjustable folding chair comprising: two generally U-shaped open frames, one outer and major and the other inner and minor, with perpendicular locking channels formed on the planar top portions thereof and horizontal slots formed adjacent the lower ends of the leg portions of said minor frame, braced one within the other by a transverse common fastener through lateral holes formed at points generally midway between the ends of the paired legs of said chair; a flat, generally rectangular seat, which has a game board pattern printed on the top, three locking slits formed adjacent the rear end, a rectangular cutout formed on one lateral side and a storage shelf built onto the undersurface, connected pivotally and detachably at the rear end by a transverse row of bosses on its undersurface to said minor frame through said locking channels thereon, and connected detachably at the frontal end by a choice of three transverse rows of bosses on its undersurface to said major frame through said locking channels thereon, in the extended operative condition of said chair; a flat, nearly square back panel, which has game board patterns printed on the back and the front thereof different from each other and from said pattern on said seat, and also has a rectangular cutout on one lateral side to correspond with said rectangular cutout on said seat, connected pivotally and detachably by three angle joints at the rear end thereof to said seat through said locking slits thereon; a rectangular storage chamber mounted between said leg portions of said minor frame adjacent the lower ends thereof through said slots thereon; members being dimensioned to fit one another, such that in switching from the extended position of said chair to the folded position, said back panel is folded over said seat which is then disengaged from the top of said major frame and folded over said minor frame which in turn is folded along with all other members within the boundaries of said major frame.
Claim 3
Dependent Claim
133 words
The chair as defined in claim 1 wherein said lateral holes on said leg portions of said minor frame are formed slightly above midpoints between the ends thereof and at the centers of the horizontal plane thereof, but said lateral holes on said leg portions of said major frame are formed at points midway between the ends thereof and toward the rear ends of the horizontal plane thereof, to receive said common fastener, creating a receded said minor frame to coincide with the rear edges of said major frame and to provide a larger space beyond the frontal edges of said minor frame to accomodate said seat, said back panel and said storage chamber without any of these members protruding beyond the frontal edges of said major frame when said chair is folded.
Claim 4
Dependent Claim
90 words
The chair of claim 1 wherein said transverse row of bosses is formed inward said locking slits parallel to the rear edge of said seat, said three transverse rows of bosses are formed parallel to one another and to the frontal edge of said seat, and the height of said chair is adjusted by selecting one of said three rows of bosses for connecting said seat with said major frame after said seat has already been locked by said row of bosses at the rear end with said minor frame.
Claim 5
Dependent Claim
73 words
The chair of claim 1 wherein said angle joints comprising coplanar extension parts and bent parts are formed on the rear edge of said back panel, said locking slits are formed parallel to the rear edge of said seat, and when said back panel is linked onto and folded over said seat, under the extended operative condition of said chair, a double seat is formed coinciding on all sides except the connecting side.
Claim 6
Dependent Claim
42 words
The chair of claim 1 wherein said rectangular cutout on said back panel coincides with said rectangular cutout on said seat to provide a space through which the adjacent leg pair of said folded chair can be grabbed by hand in transport.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |