Patent US5154490A successfully refreshed from Google Patents.
US5154490A
Expired / Lapsed
US
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Ground engaging surface for endless tracks and wheels
Assignee: Altrack Ltd
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Filing: 1988-01-29
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Granted: 1992-10-13
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Expires: 2008-01-29
Abstract
Abstract A ground engaging means providing a running surface for wheels, endless tracks and the like, which is not pneumatic in nature, thereby not susceptible to puncture, and which is resiliently flexible to offer some resistance to shock. The ground engaging means comprises a base and a number of removable, hollow, tubular ground engaging elements which extend transversely of the direction of travel of the running surface. Said ground engaging elements include an inner face for engagement to the base and an outer face for contact with the ground surface, and angular shaped side faces between the inner and outer faces allowing for resilient flexibility under normal load conditions. It is preferable that the ground engaging elements are open at their ends to allow for dissipation of heat and are arranged in circumferential rows, defining a chevron pattern, to prevent resultant side thrust imposed upon the running surface. In addition, the ground engaging elements are constructed angularly to provide a line about which the side faces can flex, and include a flexible internal reinforcement means, built in to the walls of the faces of the ground engaging element to provide reinforcement for the ground engaging element, while maintaining flexibility.
Inventors
- 👤 Alan R. Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
B; B60; B60B; B60B15/00; B60B15/26; B60B15/24; B60B15/02; B60B15/021; B60B9/00; B60B9/02; B60B9/10; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/24; B62D55/26; B62D55/28; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10279; Y10T152/10288; Y10T152/10342; Y10T152/1036
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
A segment carrying a tubular ground engaging element for a wheel or endless track, said segment including an opening extending along the tubular element, a mounting flange provided on each longitudinal side of the opening, each mounting flange being constructed of a plurality of spaced flange sections, the flange sections and spacings therebetween of one mounting flange being complementary to the flange sections and spacings therebetween of the other mounting flange, each flange section including an outwardly extending portion extending away from said opening and an inwardly extending portion extending into said opening.
Claim 2
Dependent Claim
93 words
A segment carrying a tubular ground engaging element for a wheel or endless track, said segment including an opening extending along the tubular element, a mounting flange provided on each longitudinal side of the opening, each mounting flange being constructed of a plurality of spaced flange sections, the flange sections and spacings therebetween of one mounting flange being complementary to the flange sections and spacings therebetween of the other mounting flange, each flange section including an outwardly extending portion extending away from said opening and an inwardly extending portion extending into said opening.
Claim 3
Dependent Claim
22 words
A segment according to claim 1 wherein the mounting flanges are provided with raised ribs to facilitate positive engagement with anchoring means.
Claim 4
Dependent Claim
42 words
A segment according to claim 1 or 2 wherein said outwardly directed flange portions are each provided with a seat to receive the portion of the tubular element of the neighbouring segment which bridges the spaced flange sections of said neighboring segment.
Claim 5
Dependent Claim
208 words
A ground engaging member for a wheel or endless track configured as a hollow, v-shaped tubular element, comprising a v-shaped longitudinal inner face configured for engagement with part of said wheel or endless track, a v-shaped longitudinal outer face for contacting the ground, forward and rearward longitudinal side faces each extending between respective sides of said inner face and said outer face, each of said longitudinal side faces comprising an upper portion adjacent to the respective sides of said outer face and a lower portion adjacent to the respective sides of said inner face, each said upper portion being oriented at an angle to a respective lower portion, said upper and lower portions meeting to form a juncture about which flexure may occur, said side faces being configured to define together with said inner and outer faces ends open to the atmosphere, wherein said upper portions meet together at an angle and form a juncture in accordance with the v-shape of said outer face and said lower portion of each of said longitudinal side faces meeting at an angle and forming a juncture in accordance with the v-shape of said inner face and meeting with the juncture between said upper portion of each of said longitudinal side faces.
Claim 6
Dependent Claim
208 words
A ground engaging member for a wheel or endless track configured as a hollow, v-shaped tubular element, comprising a v-shaped longitudinal inner face configured for engagement with part of said wheel or endless track, a v-shaped longitudinal outer face for contacting the ground, forward and rearward longitudinal side faces each extending between respective sides of said inner face and said outer face, each of said longitudinal side faces comprising an upper portion adjacent to the respective sides of said outer face and a lower portion adjacent to the respective sides of said inner face, each said upper portion being oriented at an angle to a respective lower portion, said upper and lower portions meeting to form a juncture about which flexure may occur, said side faces being configured to define together with said inner and outer faces ends open to the atmosphere, wherein said upper portions meet together at an angle and form a juncture in accordance with the v-shape of said outer face and said lower portion of each of said longitudinal side faces meeting at an angle and forming a juncture in accordance with the v-shape of said inner face and meeting with the juncture between said upper portion of each of said longitudinal side faces.
Claim 7
Dependent Claim
31 words
A ground engaging element as claimed in claim 4 further comprising an internal reinforcing member of sufficient flexibility to allow for resilient flexing along the juncture of said longitudinal side faces.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |