Snow track for a snowmobile
AssigneePolaris Industries Inc.
InventorsRichard H. Bates, Jr., Thomas D. Rager, Jr.
Life of this patent
Estimating the term…
Abstract
An endless track for use in propelling a snowmobile. The endless track extends between a first lateral side and a second lateral side and includes an inner drive surface and an outer ground-engaging surface. The inner drive surface includes a plurality of longitudinally spaced inner drive lugs used to drive and rotate the endless track. The outer ground-engaging surface includes a plurality of treads, where each tread extends continuous and uninterrupted along a constant height from the first lateral side to the second lateral side a full width of the endless track.
Claims20
An endless track for use in propelling a snowmobile, comprising:
- an inner drive surface extending between a first lateral side and a second lateral side, the inner drive surface having a plurality of inner drive lugs to drive and rotate the endless track;
- and
- an outer ground-engaging surface extending between the first lateral side and the second lateral side, the outer ground-engaging surface having a plurality of treads extending from the outer ground-engaging surface, at least one tread extending continuous and uninterrupted from the first lateral side to the second lateral side a full width of the endless track;
- wherein the track includes a first track window at a first position along the width of the endless track and a second track window at a second position along the width of the endless track,
- wherein the at least one tread defines three cup-shaped front concave surfaces extending between the first lateral side and the second lateral side, wherein a first of the three cup-shaped front concave surfaces is centered on the first track window with respect to the width of the endless track and a second of the three cup-shaped front concave surfaces is centered on the second track window with respect to the width of the endless track;
- wherein the at least one tread includes a plurality of vertically extending stiffening members spaced apart laterally along the at least one tread, and
- wherein the at least one tread has a continuous height substantially the full width of the endless track from the first lateral side to the second lateral side.
An endless track for use in propelling a snowmobile, comprising:
- an inner drive surface extending between a first lateral side and a second lateral side, the inner drive surface having a plurality of longitudinally spaced inner drive lugs to drive and rotate the endless track;
- and
- an outer ground-engaging surface extending between the first lateral side and the second lateral side, the outer ground-engaging surface having a plurality of treads, each tread extending continuous and uninterrupted from the first lateral side to the second lateral side a full width of the endless track, each tread having a full continuous height extending substantially the full width of the endless track;
- wherein each tread of the plurality of treads comprises a plurality of stiffening members, each of the stiffening members having a conically tapered shape, and
- wherein each tread of the plurality of treads is longitudinally spaced at every other pitch of the endless track.
An endless track for use in propelling a snowmobile, comprising:
- an inner drive surface extending between a first lateral side and a second lateral side, the inner drive surface having a plurality of longitudinally spaced inner drive lugs to drive and rotate the endless track;
- and
- an outer ground-engaging surface extending between the first lateral side and the second lateral side, the outer ground-engaging surface having a plurality of treads, wherein each tread extends continuously and uninterrupted from the first lateral side to the second lateral side a full width of the endless track, each tread having a full continuous height substantially the full width of the endless track;
- wherein each tread includes a plurality of stiffening members, the plurality of stiffening members arranged to form three arcuate concave contours,
- wherein an area of the outer ground engaging surface between a pair of treads and the first lateral surface and the second lateral surface is between 30 square inches and 112 square inches.
Dependencies are inferred from the claim text.