Patent US4511171A successfully refreshed from Google Patents.
US4511171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheelchair restraint
Assignee: Individual
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Filing: 1982-06-15
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Granted: 1985-04-16
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Expires: 2002-06-15
Abstract
Abstract An apparatus for restraining a wheelchair in a transit vehicle utilizes a fixed bumper that is adapted to engage the rear portion of a wheelchair wheel in which a movable restraining bumber is adapted to hold the wheelchair wheel in compression between the fixed and movable restraining bumpers. The movable restraining bumper is adapted to move toward and away from the wheelchair and to rotate out of the way when the wheelchair restraint is not in use. A passenger barrier is also adapted to move toward and away from the wheelchair and rotate out of the way when the wheelchair restraint is not in use.
Inventors
- 👤 Lee B. Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:05
CPC Classifications
A; A61; A61G; A61G3/00; A61G3/08; A61G3/0808
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
289 words
A wheelchair restraint apparatus comprising a fixed bumper adapted to engage one end of a wheelchair, a movable restraining bumper adapted to engage the other end of a wheelchair and hold said wheelchair in compression between said fixed restraining bumper and said movable retraining bumper, and means for moving said movable restraining bumper toward and away from said fixed bumper comprising a fixed actuator base support located adjacent one side of said wheelchair, a movable base support connected to said actuator base support and adapted to be moved in a horizontal linear motion generally parallel to said wheelchair, means connected to said movable base support for rotating said movable restraining bumper from a position away from the fixed restraining bumper to a position generally parallel to said fixed bumper, said movable restraining bumper being pivotally connected to said movable base support, means for moving said movable base support and parallel disposed movable restraining bumper toward said fixed restraining bumper in a straight line to engage said wheelchair and hold said wheelchair in compression between said movable restraining bumper and said fixed restraining bumper, said means comprising a linear motion actuator, a bumper pivot arm pivotally connected to said movable base support, a first linkage member connecting said bumper pivot arm to said movable restraining bumper, a second linkage member connecting said pivot arm to said linear motion actuator, and means for locking said means for moving said parallel disposed movable restraining bumper in a fixed position comprising a ratchet attached to said fixed actuator base support, a rocker arm pawl pivotally connected to said movable base support and adapted to engage said ratchet and hold said wheelchair in compression between said movable restraining bumper and said fixed restraining bumper.
Claim 2
Dependent Claim
289 words
A wheelchair restraint apparatus comprising a fixed bumper adapted to engage one end of a wheelchair, a movable restraining bumper adapted to engage the other end of a wheelchair and hold said wheelchair in compression between said fixed restraining bumper and said movable retraining bumper, and means for moving said movable restraining bumper toward and away from said fixed bumper comprising a fixed actuator base support located adjacent one side of said wheelchair, a movable base support connected to said actuator base support and adapted to be moved in a horizontal linear motion generally parallel to said wheelchair, means connected to said movable base support for rotating said movable restraining bumper from a position away from the fixed restraining bumper to a position generally parallel to said fixed bumper, said movable restraining bumper being pivotally connected to said movable base support, means for moving said movable base support and parallel disposed movable restraining bumper toward said fixed restraining bumper in a straight line to engage said wheelchair and hold said wheelchair in compression between said movable restraining bumper and said fixed restraining bumper, said means comprising a linear motion actuator, a bumper pivot arm pivotally connected to said movable base support, a first linkage member connecting said bumper pivot arm to said movable restraining bumper, a second linkage member connecting said pivot arm to said linear motion actuator, and means for locking said means for moving said parallel disposed movable restraining bumper in a fixed position comprising a ratchet attached to said fixed actuator base support, a rocker arm pawl pivotally connected to said movable base support and adapted to engage said ratchet and hold said wheelchair in compression between said movable restraining bumper and said fixed restraining bumper.
Claim 3
Dependent Claim
50 words
The wheelchair restraining apparatus as claimed in claim 1 further comprising a movable barrier member adapted to move from a position away from said wheelchair into a position in front of said wheelchair in sequence with said movable restraining bumper as said movable restraining bumper moves to engage said wheelchair.
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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) | 1988-04-15 | 1988-10-15 | 1989-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-15 | 1992-10-15 | 1993-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-15 | 1996-10-15 | 1997-04-16 | $7700.00 | Window Closed / Lapsed |