Modular escalating wheelchair lift
First Claim
Patent Images
1. A modular wheelchair lift comprising:
- a first rail adapted to be fixedly mounted on a flight of stairs, the first rail having a first top end and a first bottom end;
a second rail extending parallel to the first rail, the second rail being adjustably mounted on the flight of stairs, the second rail having a second top end and a second bottom end;
a first fork movable along the first rail between the first top end and the first bottom end;
a second fork movable along the second rail between the second top end and the second bottom end; and
a screw assembly coupled to the second rail, the screw assembly being adapted to slide the second rail alternatively toward and away from the first rail;
such that, as the first fork moves along the first rail between the first top end and the first bottom end, the second fork moves along the second rail between the second top end and the second bottom end.
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Abstract
A modular lift system that can be mounted on a stairway is disclosed. The system includes forks located on a first floor onto which the user rolls their wheelchair. The forks are motor operated to traverse a toothed track between the first floor and a second floor with the wheelchair and the user riding the forks. When the forks reach the second floor, the user rolls the wheelchair off the forks.
44 Citations
17 Claims
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1. A modular wheelchair lift comprising:
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a first rail adapted to be fixedly mounted on a flight of stairs, the first rail having a first top end and a first bottom end; a second rail extending parallel to the first rail, the second rail being adjustably mounted on the flight of stairs, the second rail having a second top end and a second bottom end; a first fork movable along the first rail between the first top end and the first bottom end; a second fork movable along the second rail between the second top end and the second bottom end; and a screw assembly coupled to the second rail, the screw assembly being adapted to slide the second rail alternatively toward and away from the first rail; such that, as the first fork moves along the first rail between the first top end and the first bottom end, the second fork moves along the second rail between the second top end and the second bottom end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A modular wheelchair lift comprising:
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a first side having; a first rail adapted to be fixed to a flight of stairs, the first rail having a first toothed rack; a first fork slidingly coupled to the first rail, the first fork adapted to receive a first wheel of a wheelchair; and a first motor having a toothed gear output, the first motor being coupled to the first fork and the toothed gear output being in rotational engagement with the first toothed rack such that rotation of the toothed gear output along the rack translates the first fork along the first rail; and a second side extending parallel to the first side, the second side having; a second rail adapted to engage the flight of stairs, the second rail having a second toothed rack; a second fork slidingly coupled to the second rail, the second fork adapted to receive a second wheel of the wheelchair; a second motor having a toothed gear output, the second motor being coupled to the second fork and the toothed gear output being in rotational engagement with the second toothed rack such that rotation of the toothed gear output along the rack translates the second fork along the second rail; and a screw assembly coupled to the second rail, the screw assembly being configured to move the second rail along the flight of stairs between a first position adjacent to the first rail assembly and a second position, distal from the first rail assembly. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification