Patent US3883191A successfully refreshed from Google Patents.
US3883191A
Expired / Lapsed
US
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Endless track
Assignee: Dayco Products LLC
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Filing: 1974-04-08
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Granted: 1975-05-13
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Expires: 1994-04-08
Abstract
Abstract An endless track is provided and has a main body made primarily of an elastomeric material and is adapted to be moved in an endless path having a longitudinal axis; and, the main body comprises an inside surface and a ground engaging surface with the ground engaging surface including a main surface and a plurality of ribs arranged in a cellular pattern defined by a plurality of cells with each of the cells having at least one rib thereof arranged at an acute angle with the axis. The ribs are adapted to provide continuous support for the track, resist sliding movement of the track transverse the axis, and confine flowable material, such as snow and mud, on which the track may be supported to minimize sinking thereof during operation of the track.
Inventors
- 👤 Guy Noel Chaumont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:33
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/24; B62D55/244
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
106 words
An endless track having a main body made of an elastomeric material and being adapted to be moved in an endless path having a longitudinal axis, said main body comprising an inner surface and a ground engaging outer surface; said outer surface including a central portion comprising a plurality of ribs defining regular hexagonal cells, each of said cells having ribs arranged at an acute angle with said axis to provide continuous support for said track; said outer surface further comprising side ribs defining the outermost edges of said track, said side ribs and the adjacent angled ribs forming nonsymmetrical cells outward of said central portion.
Claim 2
Dependent Claim
106 words
An endless track having a main body made of an elastomeric material and being adapted to be moved in an endless path having a longitudinal axis, said main body comprising an inner surface and a ground engaging outer surface; said outer surface including a central portion comprising a plurality of ribs defining regular hexagonal cells, each of said cells having ribs arranged at an acute angle with said axis to provide continuous support for said track; said outer surface further comprising side ribs defining the outermost edges of said track, said side ribs and the adjacent angled ribs forming nonsymmetrical cells outward of said central portion.
Claim 3
Dependent Claim
32 words
A track as set forth in claim 1 in which said ribs are provided as an integral part of said main body and extend from said main surface a substantially equal distance.
Claim 4
Dependent Claim
20 words
A track as set forth in claim 1 in which each of said ribs terminates in a flat outermost surface.
Claim 5
Dependent Claim
37 words
A track as set forth in claim 1 in which said ribs have arcuate side walls which terminate in a flat outermost surface which is substantially parallel to said main surface when viewing said track in cross-section.
Claim 6
Dependent Claim
24 words
A track as set forth in claim 4 in which each pair of arcuate side walls is concave outwardly away from said main surface.
Claim 7
Dependent Claim
27 words
A track as set forth in claim 1 and further comprising a plurality of reinforcing members embedded in said main body and extending perpendicular to said axis.
Claim 8
Dependent Claim
31 words
A track as set forth in claim 6 in which each of said reinforcing members is made of a nonmetallic material and said main body is made of a rubber compound.
Claim 9
Dependent Claim
43 words
A track as set forth in claim 1 and further comprising a plurality of projections extending from said inner surface of said main body, said projections being adapted to be engaged by associated driving members to move said track in said endless path.
Claim 10
Dependent Claim
31 words
A track as set forth in claim 8 in which said projections are provided as an integral part of said main body and each of said projections has a frustopyramidal configuration.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |