Patent US3944006A successfully refreshed from Google Patents.
US3944006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless cleated track
Assignee: Outboard Marine Corp
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Filing: 1974-08-15
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Granted: 1976-03-16
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Expires: 1994-08-15
Abstract
Abstract Disclosed herein is an inexpensive and mechanically efficient endless track formed from belts of flexible material and supported for movement in parallel spaced relation by a plurality of transverse traction bars or cleats including drive lugs which are located in the spacing between adjacent belts and which, preferably, are formed from a non-metallic material. The drive lugs are received between and drivingly engaged by drive elements or sprocket teeth on a drive wheel aligned with the spacing. The outer radial extremity of the drive elements or sprocket teeth does not extend beyond the inner surfaces of the belts.
Inventors
- 👤 George G. Lassanske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:54
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/24; B62D55/20; B62D55/202
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
77 words
An endless track comprising a pair of endless flexible belts located in parallel spaced relation and having an outer surface and an inner surface, and a plurality of transversely extending traction bars mounted on said belt outer surfaces in parallel spaced relation, said traction bars having an inner side and each including a drive lug located in the spacing between said belts and projecting inwardly from said inner side of traction bar beyond said belt inner surfaces.
Claim 2
Dependent Claim
77 words
An endless track comprising a pair of endless flexible belts located in parallel spaced relation and having an outer surface and an inner surface, and a plurality of transversely extending traction bars mounted on said belt outer surfaces in parallel spaced relation, said traction bars having an inner side and each including a drive lug located in the spacing between said belts and projecting inwardly from said inner side of traction bar beyond said belt inner surfaces.
Claim 3
Dependent Claim
29 words
An endless track according to claim 1 wherein said drive lugs are made from a non-metallic material and including means for securing said drive lugs to said traction bars.
Claim 4
Dependent Claim
32 words
An endless track according to claim 2 wherein said drive lugs are made from a rubber material and said securing means comprises said drive lugs being molded integrally with said traction bars.
Claim 5
Dependent Claim
24 words
An endless track according to claim 2 wherein said securing means comprises respective mechanical fasteners extending through said drive lugs and said traction bars.
Claim 6
Dependent Claim
50 words
An endless track according to claim 1 wherein said traction bars have an outer side, and further including at least one side skid lug mounted on said outer side of said traction bars and projecting outwardly from said traction bar outer side beyond the outermost extremity of said traction bar.
Claim 7
Dependent Claim
45 words
An endless track according to claim 5 wherein one of said side skid lugs is positioned at the location of one of said drive lugs, and means for securing said one side lug and said one drive lug to said traction bar in coupled relation.
Claim 8
Dependent Claim
55 words
An endless track according to claim 6 wherein said traction bars include an aperture at the location of said coupled drive lug and side skid lug, and said side skid lug and drive lug are made from the same moldable material and are molded as a one-piece unit with a portion extending through said aperture.
Claim 9
Dependent Claim
42 words
An endless track according to claim 6 wherein said coupled side skid lug and drive lug are separate parts and said securing means comprises mechanical fastening means extending through each of said side skid lug, said drive lug, and said traction bar.
Claim 10
Dependent Claim
31 words
An endless track according to claim 1 wherein said drive lugs are made from a non-metallic material and each includes a slotted opening for slidably receiving one of said traction bars.
Claim 11
Dependent Claim
73 words
An endless track according to claim 1 in combination with a drive wheel aligned with the spacing between said belts and including a series of circumferentially spaced drive elements having an outer radial extremity, said track being trained around said drive wheel with said drive lugs on said traction bars received between said drive elements and the outer radial extremity of said drive elements terminating short of the inner surface of said belt.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |