Patent US4850286A successfully refreshed from Google Patents.
US4850286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable tray assembly
Assignee: Individual
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Filing: 1988-11-21
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Granted: 1989-07-25
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Expires: 2008-11-21
Abstract
Abstract A foldable tray assembly which includes a tray which is locatable in a usable position with the upper surface of the tray being substantially horizontal. In the usable position, the tray assembly is located in a cantilevered position as is also the base of the tray assembly. When a human being is sitting in a chair or sofa, the base can be easily moved underneath the chair with the tray being movable to a position directly over the lap of the human being.
Inventors
- 👤 Jack B. Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:29
CPC Classifications
A; A47; A47B; A47B23/00; A47B23/04; A47B23/046; A47B2200/00; A47B2200/05
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
A foldable tray assembly comprising: a tray having a substantially planar upper surface defining a usable area; a scissor linkage assembly attached to said tray; a base, said base having a top surface, said scissor linkage assembly being attached to said base, said tray assembly being movable between a usable position and a stowage position, with said tray assembly being in said usable position said top surface being substantially parallel to and not aligned with said upper surface, with said tray assembly being in said stowage position said top surface being in substantial alignment with said upper surface; and a stabilizing foot assembly mounted on said base and extending outwardly therefrom, whereby when said tray assembly is in said usable position both said base and said stabilizing foot assembly rest against the surface upon which it is supported.
Claim 2
Dependent Claim
138 words
A foldable tray assembly comprising: a tray having a substantially planar upper surface defining a usable area; a scissor linkage assembly attached to said tray; a base, said base having a top surface, said scissor linkage assembly being attached to said base, said tray assembly being movable between a usable position and a stowage position, with said tray assembly being in said usable position said top surface being substantially parallel to and not aligned with said upper surface, with said tray assembly being in said stowage position said top surface being in substantial alignment with said upper surface; and a stabilizing foot assembly mounted on said base and extending outwardly therefrom, whereby when said tray assembly is in said usable position both said base and said stabilizing foot assembly rest against the surface upon which it is supported.
Claim 3
Dependent Claim
42 words
The foldable tray assembly as defined in claim 1 wherein: said tray having a forward edge and a rearward edge, said scissor linkage being attached to said tray at said rearward edge and being spaced a substantial distance from said forward edge.
Claim 4
Dependent Claim
23 words
The foldable tray assembly as defined in claim 2 wherein: the area of said top surface being substantially less than said usable area.
Claim 5
Dependent Claim
34 words
The foldable tray assembly as defined in claim 3 wherein: a locking means connected to said tray assembly, said locking means fixing the established position of said tray assembly when in said usable position.
Claim 6
Dependent Claim
26 words
The foldable tray assembly as defined in claim 4 wherein: said locking means including a locking pin assembly connected in conjunction with said scissor linkage assembly.
Claim 7
Dependent Claim
24 words
The foldable tray assembly as defined in claim 5 wherein: said scissor linkage assembly comprising two pair of spaced apart parallel oriented scissor linkages.
Claim 8
Dependent Claim
49 words
The foldable tray assembly as defined in claim 1 wherein: said base including an elongated slot, said stabilizing foot assembly comprising a pair of stabilizing foot members, each said stabilizing foot member being movably mounted within said slot, each said stabilizing foot member to be adjusted within said slot.
Claim 9
Dependent Claim
23 words
The foldable tray assembly as defined in claim 7 wherein: the area of said top surface being substantially less than said usable area.
Claim 10
Dependent Claim
34 words
The foldable tray assembly as defined in claim 8 wherein: a locking means connected to said tray assembly, said locking means fixing the established position of said tray assembly when in said usable position.
Claim 11
Dependent Claim
26 words
The foldable tray assembly as defined in claim 9 wherein: said locking means including a locking pin assembly connected in conjunction with said scissor linkage assembly.
References Cited (Backward Citations)
US739999A
Cited
US755103A
Cited
US2426514A
Cited
US3841699A
Cited
US3906848A
Cited
US4034684A
Cited
DE3104182A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-24 | 1993-01-23 | 1993-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-24 | 1997-01-23 | 1997-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-24 | 2001-01-23 | 2001-07-25 | $7700.00 | Window Closed / Lapsed |