Patent US4005840A successfully refreshed from Google Patents.
US4005840A
Expired / Lapsed
US
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Adjustable arm support
Assignee: Individual
•
Filing: 1976-02-17
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Granted: 1977-02-01
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Expires: 1996-02-17
Abstract
Abstract An adjustable, compact and foldable rest for supporting both arms primarily upon a seated person's knees.
Inventors
- 👤 John M. Ratkovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:18
CPC Classifications
A; A47; A47C; A47C16/00; F; F16; F16M; F16M13/00; F16M13/04; G; G03; G03B; G03B17/00; G03B17/56; G03B17/561
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
A leg-to-arm support comprising two long strips pivoted centrally together at a predetermined axis to define four extending positions; two pairs of shorter strips of a length less than one-half the length of the longer strips, the members of each pair being terminally pivoted to each other on axes spaced vertically from each other, the three axes being parallel and spaced in a straight line with respect to one another; means for pivotally mounting the remote end of each of said two pairs of shorter strips to the four portions of said longer strips intermediate their remote ends for relative pivotal movement to provide oppositely facing vertically spaced pairs of cradles defined by converging ends of the longer and shorter strips defining obtuse angles at their pivotal engagement to support arms and legs resting thereon against lateral movement.
Claim 2
Dependent Claim
138 words
A leg-to-arm support comprising two long strips pivoted centrally together at a predetermined axis to define four extending positions; two pairs of shorter strips of a length less than one-half the length of the longer strips, the members of each pair being terminally pivoted to each other on axes spaced vertically from each other, the three axes being parallel and spaced in a straight line with respect to one another; means for pivotally mounting the remote end of each of said two pairs of shorter strips to the four portions of said longer strips intermediate their remote ends for relative pivotal movement to provide oppositely facing vertically spaced pairs of cradles defined by converging ends of the longer and shorter strips defining obtuse angles at their pivotal engagement to support arms and legs resting thereon against lateral movement.
Claim 3
Dependent Claim
54 words
The support defined in claim 1, including latch means defined by a movable member and a stationary member engaged by the movable member, said movable member being pivotally mounted on one of the three axes and the other member of the latch means being mounted on another one of the three axes adjacent thereto.
Claim 4
Dependent Claim
27 words
The support defined in claim 2 in which said movable member has notches inclined inwardly in the direction of weight engagement thereof selectively with said stationary member.
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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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |