Patent US4408828A successfully refreshed from Google Patents.
Patent US3622209A successfully refreshed from Google Patents.
US3622209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle drive track
Assignee: Chemical Rubber Products Inc
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Filing: 1969-10-27
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Granted: 1971-11-23
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Expires: 1989-10-27
Abstract
Abstract A drive track for vehicles such as snowmobiles comprising a flexible endless belt containing flexible stiffening members composed of wire fabric which maintain the belt in uniform gripping contact with the ground or snow while simultaneously permitting localized flexibility allowing for uneven terrain and cushioning for concentrated loading caused by immovable or nonyielding objects such as stones or tree stumps.
Inventors
- 👤 John F Leyden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:48
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/24; B62D55/244
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
A drive track comprising in combination a flexible belt having a ground-engaging face and a face adapted to receive driving movement and at least one series of flexible stiffening members spaced from each other within the belt, and disposed transversely to the belt which maintains the ground-engaging face in uniform contact with the ground while simultaneously permitting flexibility, each of said flexible stiffening members comprising a plurality of metal wires which are disposed transversely to the belt and are contained in a metal fabric where such wires constitute the warp of the fabric and are woven together by a single filler wire having a diameter smaller than the warp wires.
Claim 2
Dependent Claim
110 words
A drive track comprising in combination a flexible belt having a ground-engaging face and a face adapted to receive driving movement and at least one series of flexible stiffening members spaced from each other within the belt, and disposed transversely to the belt which maintains the ground-engaging face in uniform contact with the ground while simultaneously permitting flexibility, each of said flexible stiffening members comprising a plurality of metal wires which are disposed transversely to the belt and are contained in a metal fabric where such wires constitute the warp of the fabric and are woven together by a single filler wire having a diameter smaller than the warp wires.
Claim 3
Dependent Claim
29 words
The drive track of claim 1 wherein there are two series of flexible stiffening members within the belt in a stacked arrangement with one series disposed above the other.
Claim 4
Dependent Claim
40 words
The drive track of claim 1 wherein the belt is adapted to receive driving motion by having longitudinally spaced apertures adapted to receive and cooperate with sprocket teeth for effecting a driving relationship between the belt and such sprocket teeth.
Claim 5
Dependent Claim
28 words
The drive track of claim 1 wherein the ground-engaging face is equipped with a series of raised cleats integral with the belt and adapted to grip the ground.
Claim 6
Dependent Claim
25 words
The drive track of claim 4 wherein at least a portion of the flexible stiffening members are in a longitudinally spaced relationship below the cleats.
Claim 7
Dependent Claim
37 words
The drive track of claim 1 wherein the belt comprises at least two elastomerized fabric layers and at least one series of the flexible stiffening members is located within the belt between two of such fabric layers.
Claim 8
Dependent Claim
24 words
The drive track of claim 6 wherein a second series of flexible stiffening members is located between one fabric layer and the ground-engaging face.
Claim 9
Dependent Claim
86 words
The drive track of claim 1 comprising in combination a flexible belt having a face adapted to receive driving movement and composed of at least two elastomerized fabric layers and having a ground-engaging face equipped with raised cleats, at least one series of flexible stiffening members longitudinally spaced from each other within the belt between two of the elastomerized fabric layers and disposed transverse to the belt, at least a portion of the flexible stiffening members being longitudinally located in a spaced relationship below the cleats
Claim 10
Dependent Claim
46 words
The drive track of claim 8 wherein a second series of the flexible stiffening members is localized between one fabric layer and the ground-engaging face with a portion of such second series of flexible stiffening members being longitudinally located in a spaced relationship below the cleats.
Claim 11
Dependent Claim
107 words
A drive track comprising in combination a flexible belt having a ground-engaging face and a face adapted to receive driving movement and at least one series of flexible stiffening members spaced from each other within the belt, and disposed transversely to the belt which maintains the ground-engaging face in uniform contact with the ground while simultaneously permitting flexibility, each of said flexible stiffening members comprising a plurality of metal wires which are disposed transversely to the belt and are contained in a metal fabric where such wires constitute the warp of the fabric and are woven together by filler wires having diameters smaller than the warp wires.
Claim 12
Dependent Claim
107 words
A drive track comprising in combination a flexible belt having a ground-engaging face and a face adapted to receive driving movement and at least one series of flexible stiffening members spaced from each other within the belt, and disposed transversely to the belt which maintains the ground-engaging face in uniform contact with the ground while simultaneously permitting flexibility, each of said flexible stiffening members comprising a plurality of metal wires which are disposed transversely to the belt and are contained in a metal fabric where such wires constitute the warp of the fabric and are woven together by filler wires having diameters smaller than the warp wires.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |