Patent US3428791A successfully refreshed from Google Patents.
US3654643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Invalid lift-transfer chair
Assignee: Individual
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Filing: 1969-05-05
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Granted: 1972-04-11
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Expires: 1989-05-05
Abstract
Abstract A chair base structure on casters has four tubular legs with which telescope the uprights of a vertically movable seat structure actuated by the piston and cylinder of a hydraulic lift jack. Pivoted at one end to the seat structure is a tiltable slide support upon which an invalid transfer slide is reciprocably mounted. The rearward uprights of the seat structure are provided with laterally swinging chair arms which enter sockets on the forward uprights and are pivoted to chair-pushing handle bars. A plastic bearing plate placed on the bed assists the operation of the slide in transferring an invalid between the bed and the chair. The slide support is provided with a central opening which enables its use as an auxiliary toilet seat when moved over a toilet bowl.
Inventors
- 👤 Wayne N Clanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:40
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/1056; A61G5/1059; A61G5/1002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
186 words
An invalid transfer chair for moving an invalid to and from a bed, said chair comprising a base structure having a plurality of spaced vertical legs with casters on the lower ends thereof and with vertical guide portions associated therewith, a seat structure having a plurality of spaced vertical uprights disposed adjacent said legs and having vertical guided portions engaging said guide portions, mechanism mounted on said base structure in engagement with said seat structure for raising and lowering said seta structure relatively to said base structure, said seat structure having thereon a pair of approximately coplanar invalid-supporting seat panels extending from edge to edge thereacross in spaced parallel relationship to one another, said seat structure also having a laterally-disposed slide support mounted thereon and extending thereacross in the space between said seat panels at a level therebelow, and an invalid transfer slide disposed in the space between said seat panels in substantially co-planar relationship therewith and in sliding engagement with said slide support and separable therefrom for travel relatively thereto between said slide support and bed onto and off of the slide support and bed.
Claim 2
Dependent Claim
186 words
An invalid transfer chair for moving an invalid to and from a bed, said chair comprising a base structure having a plurality of spaced vertical legs with casters on the lower ends thereof and with vertical guide portions associated therewith, a seat structure having a plurality of spaced vertical uprights disposed adjacent said legs and having vertical guided portions engaging said guide portions, mechanism mounted on said base structure in engagement with said seat structure for raising and lowering said seta structure relatively to said base structure, said seat structure having thereon a pair of approximately coplanar invalid-supporting seat panels extending from edge to edge thereacross in spaced parallel relationship to one another, said seat structure also having a laterally-disposed slide support mounted thereon and extending thereacross in the space between said seat panels at a level therebelow, and an invalid transfer slide disposed in the space between said seat panels in substantially co-planar relationship therewith and in sliding engagement with said slide support and separable therefrom for travel relatively thereto between said slide support and bed onto and off of the slide support and bed.
Claim 3
Dependent Claim
37 words
An invalid lift-transfer chair, according to claim 1, wherein said slide support is pivotally connected at one end to one edge of said seat structure and is tiltable upward and downward relatively to the opposite edge thereof.
Claim 4
Dependent Claim
51 words
An invalid lift-transfer chair, according to claim 2, wherein there is provided mechanism on said seat structure operatively engaging said slide support at a location near the free end thereof spaced laterally away from its pivotal connection to said seat structure for tilting said slide support relatively to said seat structure.
Claim 5
Dependent Claim
37 words
An invalid lift-transfer chair, according to claim 3, wherein said mechanism includes a rotary shaft with a cam member operatively connected thereto and engageable with said slide support, and with a handle operatively connected to said shaft.
Claim 6
Dependent Claim
27 words
An invalid lift-transfer chair, according to claim 3, wherein said mechanism includes a latch device constructed and arranged to lock said slide support in its uppermost position.
Claim 7
Dependent Claim
55 words
An invalid lift-transfer chair, according to claim 1, wherein said legs and said uprights include forward and rearward pairs thereof, and wherein chair arms are pivotally mounted on the rearward pair of uprights for horizontal arcuate swinging thereon around said rearward pair of uprights into and out of engagement with the forward pair of uprights.
Claim 8
Dependent Claim
70 words
An invalid lift-transfer chair, according to claim 1, wherein said transfer slide has rollers thereon engageable with said slide support, and wherein there is provided a substantially rigid separate bearing plate aDapted to be placed on top of the bed in alignment with said slide support for slidably receiving and supporting said transfer slide temporarily during transfer of the invalid on the slide between the bed and said seat structure.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |