Obstacle traversing wheelchair
First Claim
Patent Images
1. A wheelchair suspension comprising:
- a frame;
a pivot arm pivotally coupled to the frame;
a front caster coupled to the pivot arm;
a drive assembly mounting bracket;
a rear caster coupled to the frame; and
wherein movement of the drive assembly mounting bracket with respect to the frame in a first direction causes the pivot arm to remain in substantially a first position; and
movement of the drive assembly mounting bracket with respect to the frame in a second direction urges the pivot arm away from the first position.
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Accused Products
Abstract
A wheelchair suspension is provided. The wheelchair suspension includes a frame, a pivot arm, a front caster, a drive assembly, and a rear caster. The pivot arm is pivotally coupled to the frame. The front caster is coupled to the pivot arm. Movement of the drive assembly in a first direction causes the pivot arm to substantially remain in a first position. Movement of the drive assembly in a second direction urges the pivot arm away from the first position.
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Citations
34 Claims
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1. A wheelchair suspension comprising:
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a frame; a pivot arm pivotally coupled to the frame; a front caster coupled to the pivot arm; a drive assembly mounting bracket; a rear caster coupled to the frame; and wherein movement of the drive assembly mounting bracket with respect to the frame in a first direction causes the pivot arm to remain in substantially a first position; and movement of the drive assembly mounting bracket with respect to the frame in a second direction urges the pivot arm away from the first position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wheelchair suspension comprising:
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a frame; a seat supported by the frame; a rear caster coupled to the frame; a pair of suspension assemblies disposed on opposite sides of the frame, each suspension assembly comprising; a pivot arm coupled to the frame; a front caster coupled to the pivot arm; a drive assembly mounting bracket; wherein the movement of the drive assembly mounting bracket with respect to the frame in a first direction causes the pivot arm to remain in substantially a first position; and movement of the drive assembly mounting bracket with respect to the frame in a second direction urges the pivot arm away from the first position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A wheelchair suspension comprising:
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a frame; a pivot arm pivotally coupled to the frame; a front caster coupled to the pivot arm; a drive assembly mounting bracket; a rear caster coupled to the frame; and a means for coupling the pivot arm and the front caster such that movement of the drive assembly mounting bracket with respect to the frame in a first direction causes the pivot arm to remain in substantially a first position; and movement of the drive assembly mounting bracket with respect to the frame in a second direction urges the pivot arm away from the first position.
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26. A wheelchair comprising:
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a frame; a front caster assembly comprising a pivot arm; a drive assembly comprising a pivot bracket; wherein movement of the drive assembly rivot bracket with respect to the frame in a first direction causes the rivot arm to remain in substantially a first position; and movement of the drive assembly rivot bracket with respect to the frame in a second direction urges the rivot arm away from the first position. - View Dependent Claims (27, 28)
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29. A wheelchair comprising:
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a frame; a pivot arm having a first pivot coupling; a front caster coupled to the pivot arm; a drive assembly having a mount, wherein the mount includes a second pivot coupling; a rear caster coupled to the frame; and wherein movement of the drive assembly mount in a first rivot direction causes the pivot arm to remain in substantially a first position; and movement of the drive assembly mount in a second rivot direction urges the pivot arm away from the first position. - View Dependent Claims (30, 31, 32, 33)
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34. A wheelchair suspension comprising:
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a frame; a pivot arm pivotally coupled to the frame; a front caster coupled to the pivot arm; a drive assembly mounting bracket; a rear caster coupled to the frame; and wherein movement of the drive assembly mounting bracket with respect to the pivot arm in a first direction causes the pivot arm to remain in substantially a first position; and movement of the drive assembly mounting bracket with respect to the pivot arm in a second direction urges the pivot arm away from the first position.
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Specification