Patent US4054315A successfully refreshed from Google Patents.
US4054315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Table assembly for a wheelchair
Assignee: Individual
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Filing: 1976-04-19
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Granted: 1977-10-18
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Expires: 1996-04-19
Abstract
Abstract A table assembly for mounting and demounting to frame members of a wheelchair, said assembly having a table member with open ended locking slots to engage tubular leg and frame members; and elongated braces on the underside of the table member which can be lowered to engage tubular horizontal frame members on the wheelchair. The table member is provided with mounting means and an easel assembly which can be pivoted to selectively fixed positions. The table member is also provided with three upright walls and openable and closable leaves so the working surface can be extended when open, and the assembly can be carried as a box when closed.
Inventors
- 👤 Anzelm A. Czarnowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:45
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A47; A47C; A47C7/00; A47C7/62; A47C7/68; A47C7/70; A61G5/1094
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
209 words
A mountable and demountable table assembly for a wheelchair which has a pair of vertical leg members extending to arm rest members and horizontal frame members which are substantially parellel to said arm rests, including a planar table member having an inner edge, spaced side edges and an outer edge, leg braces pivotally mounted to the underside of the table member adjacent to the outer edge, said braces having looped and biased seats to engage frame member portions of the wheelchair, locking means associated with the table member adjacent the inner edge to engage frame members at a level higher than the frame portions engaged by the leg braces, said locking means including an inner edge locking slot having an open end located along said inner edge to engage a vertical leg member adjacent the arm rest member, and a side edge locking slot having an open end located along one of said side edge for engaging the other of said vertical leg members, mounting means positioned on said planar table member, and an easel assembly joined to said mounting means, said easel assembly including a pivotally mounted base member, an elongated easel member, and an elongated adjusting means to fix the elongated easel in a selectively pivoted position.
Claim 2
Dependent Claim
209 words
A mountable and demountable table assembly for a wheelchair which has a pair of vertical leg members extending to arm rest members and horizontal frame members which are substantially parellel to said arm rests, including a planar table member having an inner edge, spaced side edges and an outer edge, leg braces pivotally mounted to the underside of the table member adjacent to the outer edge, said braces having looped and biased seats to engage frame member portions of the wheelchair, locking means associated with the table member adjacent the inner edge to engage frame members at a level higher than the frame portions engaged by the leg braces, said locking means including an inner edge locking slot having an open end located along said inner edge to engage a vertical leg member adjacent the arm rest member, and a side edge locking slot having an open end located along one of said side edge for engaging the other of said vertical leg members, mounting means positioned on said planar table member, and an easel assembly joined to said mounting means, said easel assembly including a pivotally mounted base member, an elongated easel member, and an elongated adjusting means to fix the elongated easel in a selectively pivoted position.
Claim 3
Dependent Claim
38 words
A mountable and demountable table assembly which includes the features of claim 1 above wherein said inner edge is modified by a recessed curvilinear edge portion between the side edges to accommodate the torso of a seated user.
Claim 4
Dependent Claim
100 words
A mountable and demountable table assembly which includes the features of claim 1 above wherein said table member includes, proximate to said inner edge locking slot, a clasp member pivoted to the underside and having a length to span said locking slot, a threaded bolt embedded in the underside of the table member on the side of the locking slot opposite to the side where the clasp is pivoted, seat configurations in an edge of said clasp member to capture the engaged vertical leg member and the threaded bolt, and a fastener to hold the clasp to the threaded bolt.
Claim 5
Dependent Claim
85 words
A mountable and demountable table assembly which includes the features of claim 1 above wherein said planar table member has upright sides along the side edges, an extension leaf hingedly mounted to the top of each upright side, and stop elements on the upright sides to support the leaves in extended level position, said leaves having relative dimensions so that when the leaves are pivoted towards each other they meet at a level edge to edge relationship parallel to and above said planar table member.
Claim 6
Dependent Claim
99 words
A mountable and demountable table assembly which includes the features of claim 4 above wherein an edge of each leaf opposite to the hinged edges forms an inner edge when such leaves are closed, each inner edge having a rabbet lap so that the closed leaves form a rabbet joint, and said stop means being elongated angles with one angle face flush against the upper and outer upright side, the other angle face being flush with the upper edge of the upright sides to support the extended leaves in raised and substantially parallel relationship to the table planar member.
Claim 7
Dependent Claim
28 words
A mountable and demountable table assembly which includes the features of claim 1 above wherein said mounting means is a platform releasably mounted on the planar table member.
Claim 8
Dependent Claim
41 words
A mountable and demountable table assembly which includes the features of claim 4 above and which further includes an upright front on the table member extending to the upright sides to thereby form a three sided enclosure for the table member.
Claim 9
Dependent Claim
56 words
A mountable and demountable table assembly which includes the features of claim 7 above wherein said leaves are hinged to said upright sides so that said leaves can be rotated 180° from full extended position to full closed position, said leaves supported in full closed position by the upper edges of the upright sides and front.
Claim 10
Dependent Claim
60 words
A mountable and demountable table assembly which includes the features of claim 1 wherein said leg braces are a pair of prebent arms joined in normal relationship to a crosspiece member pivotally mounted in a journal, and the ends of such arms are formed as looped yielding seats lying in a common plane which intersects the ends of said arms.
Claim 11
Dependent Claim
105 words
A mountable and demountable table assembly which includes the features of claim 11 wherein said locking means further includes a pair of pivotal braces adjacent said inner edge, said pivotal braces being shorter than said leg braces, the free ends of said braces having curved and biased loops to frictionally engage cylindrical frame members at a level higher than the frame members engaged by said leg braces, and the pair of braces having a length related to the length of the leg braces so that the table member is level when all the braces are operatively engaged with the frame members of the wheel chair.
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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) | 1980-10-17 | 1981-04-18 | 1981-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-17 | 1985-04-18 | 1985-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-17 | 1989-04-18 | 1989-10-18 | $7700.00 | Window Closed / Lapsed |