Wheelchair suspension
AssigneeVelox Manufacturing Inc.
InventorRyan Batke
Life of this patent
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Abstract
A suspension for a wheelchair, wherein the suspension comprises: a frame, a motor carrier pivotally mounted on the frame to rotate about a motor carrier axis, a drive wheel having a bottom and mounted on the motor carrier to rotate about a drive wheel axis, a swing arm pivotally mounted on the frame to rotate about a swing arm axis, a swing wheel having a bottom and mounted on the swing arm to rotate about a swing wheel axis, a first contact surface coupled to move in concert with the motor carrier, and a second contact surface coupled to move in concert with the swing arm and configured to contact the first contact surface and transfer an upward force on the swing wheel into a downward force on the drive wheel.
Claims20
A suspension for a wheelchair, the suspension comprising:
- a frame;
- a motor carrier pivotally mounted on the frame to rotate about a motor carrier axis;
- a drive wheel having a bottom and mounted on the motor carrier to rotate about a drive wheel axis;
- a swing arm pivotally mounted on the frame to rotate about a swing arm axis;
- a swing wheel having a bottom and mounted on the swing arm to rotate about a swing wheel axis;
- a first contact surface coupled to move in concert with the motor carrier;
- and
- a second contact surface coupled to move in concert with the swing arm and configured to contact the first contact surface and transfer an upward force on the swing wheel into a downward force on the drive wheel;
- wherein the second contact surface is configured to contact the first contact surface when the first swing arm rotates about the first swing arm axis an engagement angle from a neutral position, wherein the first swing arm is in the neutral position when the bottom of the first swing wheel and the bottom of the first drive wheel are aligned in a substantially horizontal plane.
A suspension for a wheelchair, the suspension comprising:
- a frame comprising a first side and a second side opposed to the first side;
- a first motor carrier pivotally mounted on the first side of the frame to rotate about a first motor carrier axis;
- a second motor carrier pivotally mounted on the second side of the frame to rotate about a second motor carrier axis;
- a first drive wheel having a bottom and mounted on the first motor carrier to rotate about a first drive wheel axis;
- a second drive wheel having a bottom and mounted on the second motor carrier to rotate about a second drive wheel axis;
- a first swing arm pivotally mounted on the first side of the frame to rotate about a first swing arm axis;
- a second swing arm pivotally mounted on the second side of the frame to rotate about a second swing arm axis;
- a first swing wheel having a bottom and mounted on the first swing arm to rotate about a first swing wheel axis;
- a second swing wheel having a bottom and mounted on the second swing arm to rotate about a second swing wheel axis;
- a first contact surface coupled to move in concert with the first motor carrier;
- a second contact surface coupled to move in concert with the first swing arm and configured to contact the first contact surface and transfer an upward force on the first swing wheel into a downward force on the first drive wheel;
- a third contact surface coupled to move in concert with the second motor carrier;
- and
- a fourth contact surface coupled to move in concert with the second swing arm and configured to contact the third contact surface and transfer an upward force on the second swing wheel into a downward force on the second drive wheel;
- wherein the second contact surface is configured to contact the first contact surface when the first swing arm rotates about the first swing arm axis an engagement angle from a neutral position, wherein the first swing arm is in the neutral position when the bottom of the first swing wheel and the bottom of the first drive wheel are aligned in a substantially horizontal plane.
Dependencies are inferred from the claim text.