Suspension for wheeled vehicles
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 rear caster pivotally coupled to the frame;
a stabilizing system coupled to the frame and the pivot arm;
a sensor coupled to the stabilizing system;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame.
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Accused Products
Abstract
A wheelchair suspension comprises a frame, at least one pivot arm, at least one front caster, at least one rear caster, a stabilizing system, and a sensor. The pivot arm is coupled to the frame. The front caster is coupled to the pivot arm. The rear caster is coupled to the frame. The stabilizing system is coupled to the frame and the pivot arm. The sensor is arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame.
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Citations
45 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 rear caster pivotally coupled to the frame;
a stabilizing system coupled to the frame and the pivot arm;
a sensor coupled to the stabilizing system;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. 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 rear caster pivotally coupled to the frame;
a stabilizing system coupled to the frame and the pivot arm;
a sensor means for selectively actuating the stabilizing system;
the sensor means being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame.
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15. A wheelchair suspension comprising:
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a frame;
a front caster;
a first pivot arm and a second pivot arm pivotally coupled to the frame and the front caster;
a rear caster pivotally coupled to the frame;
a stabilizing system coupled to the frame and at least one of the first and second pivot arms;
a sensor coupled to the stabilizing system;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method of stabilizing a wheelchair frame comprising:
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actuating a stabilizing system upon relative movement of the wheelchair frame with respect to a rear castor;
wherein actuation of the stabilizing system at least partially resists at least upward movement of the front caster with respect to the frame. - View Dependent Claims (29, 30, 31, 32)
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33. 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 rear caster coupled to the frame;
a stabilizing means;
a sensor coupled to the stabilizing system;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing means to at least partially resist further movement of the frame. - View Dependent Claims (34, 35, 36, 37)
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38. A wheelchair suspension comprising:
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a frame;
a front caster;
a first pivot arm and a second pivot arm pivotally coupled to the frame and the front caster;
a rear caster pivotally coupled to the frame;
a stabilizing means;
a sensor coupled to the stabilizing system;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing means to at least partially resist further movement of the frame. - View Dependent Claims (39, 40, 41, 42)
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43. A wheelchair comprising:
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a frame;
a seat supported by the frame;
first and second pivot arms pivot arms pivotally coupled to the frame;
first and second drive wheels coupled to the first and second pivot arms respectively;
first and second front casters coupled to the first and second pivot arms respectively;
at least one rear caster pivotally coupled to the frame;
at least one stabilizing system coupled to the frame and at least one of the pivot arms;
a sensor coupled to the stabilizing system;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame.
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44. A wheelchair comprising:
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a frame;
a seat supported by the frame;
first and second pivot arms pivot arms pivotally coupled to the frame;
first and second drive wheels coupled to the first and second pivot arms respectively;
first and second front casters coupled to the first and second pivot arms respectively;
at least one rear caster pivotally coupled to the frame;
at least one stabilizing means;
a sensor coupled to the stabilizing means;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing means to at least partially resist further movement of the frame.
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45. A wheelchair suspension comprising:
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a frame;
a pivot arm coupled to the frame;
a front caster coupled to the pivot arm;
a rear caster coupled to the frame;
a stabilizing system coupled to the frame and the pivot arm;
a sensor coupled to the stabilizing system;
the sensor being arranged such that movement of the frame relative to the rear castor causes actuation of the stabilizing system to at least partially resist further movement of the frame.
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Specification