Wheelchair suspension
First Claim
1. A wheelchair comprising:
- a frame;
a pivoting drive assembly that includes;
a drive wheel;
a motor drive connected to the drive wheel; and
a first pivoting linkage fixedly attached to the motor drive, wherein the pivoting drive assembly is pivotally coupled to the frame at a first frame pivot axis such that the drive wheel, motor drive, and first pivoting linkage pivot about the first frame pivot axis as a unit;
a second pivoting linkage pivotally coupled to the frame at a second frame pivot axis; and
a front caster assembly, wherein the first pivoting linkage is pivotally coupled to the front caster assembly at a first front caster pivot axis and the second pivoting linkage is pivotally coupled to the front caster assembly at a second front caster pivot axis.
14 Assignments
0 Petitions
Accused Products
Abstract
A wheelchair includes a pivoting drive assembly having a drive wheel, a motor drive connected to the drive wheel, and a first pivoting linkage fixedly attached to the motor drive. The pivoting drive assembly is pivotally coupled to a frame at a first frame pivot axis such that the drive wheel, motor drive, and first pivoting linkage pivot about the first frame pivot axis as a unit. The wheelchair further includes a second pivoting linkage and a front caster assembly. The second pivoting linkage is pivotally coupled to the frame at a second frame pivot axis. The first pivoting linkage is pivotally coupled to the front caster assembly at a first front caster pivot axis and the second pivoting linkage is pivotally coupled to the front caster assembly at a second front caster pivot axis.
-
Citations
22 Claims
-
1. A wheelchair comprising:
-
a frame; a pivoting drive assembly that includes; a drive wheel; a motor drive connected to the drive wheel; and a first pivoting linkage fixedly attached to the motor drive, wherein the pivoting drive assembly is pivotally coupled to the frame at a first frame pivot axis such that the drive wheel, motor drive, and first pivoting linkage pivot about the first frame pivot axis as a unit; a second pivoting linkage pivotally coupled to the frame at a second frame pivot axis; and a front caster assembly, wherein the first pivoting linkage is pivotally coupled to the front caster assembly at a first front caster pivot axis and the second pivoting linkage is pivotally coupled to the front caster assembly at a second front caster pivot axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A wheelchair comprising:
-
a frame; first and second independent pivoting assemblies coupled to opposite sides of the frame, wherein each of the first and second pivoting assemblies includes; a drive wheel; a motor drive connected to the drive wheel; a first pivoting linkage fixedly attached to the motor drive, wherein the first pivoting linkage is pivotally coupled to the frame at a first frame pivot axis such that the drive wheel, motor drive, and first pivoting linkage pivot about the first frame pivot axis as a unit; a second pivoting linkage pivotally coupled to the frame at a second frame pivot axis; and a front caster assembly, wherein the first pivoting linkage is pivotally coupled to the front caster assembly at a first front caster pivot axis and the second pivoting linkage is pivotally coupled to the front caster assembly at a second front caster pivot axis. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification