US3711877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid lift aid
Assignee: Individual
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Filing: 1971-03-04
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Granted: 1973-01-23
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Expires: 1991-03-04
Abstract
Abstract My invalid lift aid is very comfortable for the occupant and can be adjusted both vertically and rotatable about a vertical axis with a minimum of effort. The lift aid may also be folded into a compact unit so that it may be stored in the truck or rear seat of an automobile.
Inventors
- 👤 D Averill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:38
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1013; A61G7/1015; A61G7/104; A61G7/1046; A61G7/1049; A61G7/1059; A61G7/1063; A61G7/1067; A61G7/1073; A61G7/1076; A61G7/1061
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
160 words
An invalid lift aid comprising a base frame, a boom extending upwardly from said base frame in one position of the parts, a seat, a chain extending through said boom, means securing one end of the chain to the seat, a sprocket journaled on the boom, said chain extending around the sprocket, manual means to rotate the sprocket, and means journaling the boom on the base frame to permit partial rotation of the boom on said base frame, said means journaling the boom on the base frame comprising a tube journaled on the base frAme, said tube being fixedly mounted on the boom, said means journaling the boom on the base frame comprising a tube journaled on the base frame, said tube being fixedly mounted on the boom, and releasable latch means on the tube engageable with the base frame to hold the boom in either of two positions, and adjusting means on the boom to vary the length thereof.
Claim 2
Dependent Claim
160 words
An invalid lift aid comprising a base frame, a boom extending upwardly from said base frame in one position of the parts, a seat, a chain extending through said boom, means securing one end of the chain to the seat, a sprocket journaled on the boom, said chain extending around the sprocket, manual means to rotate the sprocket, and means journaling the boom on the base frame to permit partial rotation of the boom on said base frame, said means journaling the boom on the base frame comprising a tube journaled on the base frAme, said tube being fixedly mounted on the boom, said means journaling the boom on the base frame comprising a tube journaled on the base frame, said tube being fixedly mounted on the boom, and releasable latch means on the tube engageable with the base frame to hold the boom in either of two positions, and adjusting means on the boom to vary the length thereof.
Claim 3
Dependent Claim
139 words
An invalid lift aid comprising a base frame, a boom extending upwardly from said base frame in one position of the parts, a seat, a chain extending through said boom, means securing one end of the chain to the seat, a sprocket journaled on the boom, said chain extending around the sprocket, manual means to rotate the sprocket, and means journaling the boom on the base frame to permit partial rotation of the boom on said base frame, said means journaling the boom on the base frame comprising a tube journaled on the base frame, said tube being fixedly mounted on the boom, and releasable latch means on the tube engageable with the base frame to hold the boom in either of two positions, and manually operable means engaging the boom to rotate said boom about a vertical axis.
Claim 4
Dependent Claim
139 words
An invalid lift aid comprising a base frame, a boom extending upwardly from said base frame in one position of the parts, a seat, a chain extending through said boom, means securing one end of the chain to the seat, a sprocket journaled on the boom, said chain extending around the sprocket, manual means to rotate the sprocket, and means journaling the boom on the base frame to permit partial rotation of the boom on said base frame, said means journaling the boom on the base frame comprising a tube journaled on the base frame, said tube being fixedly mounted on the boom, and releasable latch means on the tube engageable with the base frame to hold the boom in either of two positions, and manually operable means engaging the boom to rotate said boom about a vertical axis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |