Patent US4026387A successfully refreshed from Google Patents.
US4026387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheelchair lift
Assignee: Individual
•
Filing: 1976-01-12
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Granted: 1977-05-31
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Expires: 1996-01-12
Abstract
Abstract A lift for raising or lowering a wheelchair into or from a vehicle, such as a trailer or bus, which comprises a platform pivoted at a single point or location for swinging through about 90° from beneath the trailer to a position at right angles thereto. The pivot is on the end of a shaft which may be raised and lowered so that the lift may be on the ground to receive a wheelchair and then lifted to a height of the level of the doorsill of the trailer for the wheelchair to be wheeled into the vehicle. The vehicle need be changed in no way, but the lift will be just added thereto.
Inventors
- 👤 Vasco O. Abreu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:22
CPC Classifications
A; A61; A61G; A61G3/00; A61G3/02; A61G3/06; A61G3/062; A61G3/067; A61G2220/00; A61G2220/16; Y; Y10; Y10S; Y10S414/00; Y10S414/134
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
A lift device attached to a vehicle having an access opening comprising a jack having a shaft reciprocably movable in generally an axial direction, means mounting said jack on the outside of the vehicle adjacent said opening with the axis of said shaft generally vertical and outside of the vehicle, means to move said shaft in either upward or downward axial direction, a platform of a size to receive a wheelchair pivotally mounted solely at the end portion of said shaft for swinging about the axis of said shaft through at least 90° from a stored position beneath said vehicle to an operating position at generally right angles to and outside the vehicle.
Claim 2
Dependent Claim
113 words
A lift device attached to a vehicle having an access opening comprising a jack having a shaft reciprocably movable in generally an axial direction, means mounting said jack on the outside of the vehicle adjacent said opening with the axis of said shaft generally vertical and outside of the vehicle, means to move said shaft in either upward or downward axial direction, a platform of a size to receive a wheelchair pivotally mounted solely at the end portion of said shaft for swinging about the axis of said shaft through at least 90° from a stored position beneath said vehicle to an operating position at generally right angles to and outside the vehicle.
Claim 3
Dependent Claim
27 words
A lift as in claim 1 wherein a ramp is hinged to the edge of said platform distant from said pivotal mounting to fold over said platform.
Claim 4
Dependent Claim
37 words
A lift as in claim 1 wherein a locking means comprising a member on said platform and a member mounted on the vehicle are positioned to engage to hold the platform against swinging beyond an operating position.
Claim 5
Dependent Claim
33 words
A lift as in claim 1 wherein the platform when in stored position may be raised to engage the underside of the vehicle with sufficient friction to hold the platform in stored position.
Claim 6
Dependent Claim
25 words
A lift as in claim 1 wherein a torsion bar extends beneath the platform from a location adjacent its pivot diagonally to its far edge.
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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) | 1980-05-30 | 1980-11-29 | 1981-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-30 | 1984-11-29 | 1985-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-30 | 1988-11-29 | 1989-05-31 | $7700.00 | Window Closed / Lapsed |