US4694556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track tread
Assignee: George Blair PLC
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Filing: 1985-12-17
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Granted: 1987-09-22
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Expires: 2005-12-17
Abstract
Abstract The invention disclosed is that prefabricated wear pads are applied to the track link bodies of tracked vehicles by inserting projections of the pads through apertures in the link body from one side of the apertures and locking means co-acts with the projections to lock same to the body. Suitably, the locking means are push engagement with said projections to lock the pads to the link bodies as opposed to the conventional method of moulding the pad around and through the links. In an alternative arrangement, the locking means are cast in locking engagement with the projections as opposed to the push fitting.
Inventors
- 👤 Paul Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:49
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/26; B62D55/28; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49448; Y10T29/49826; Y10T29/49863; Y10T29/4987; Y10T29/49872; Y10T29/49876
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
A method of applying a wear surface pad to a link body of an endless track of a tracked vehicle, said link body having at least one aperture where the aperture wall is provided with a circumferential locking rib defining a neck in the aperture which is smaller in diameter than the remainder of the aperture and is intermediate the ends thereof, the wear surface pad being of resilient plastic and which has at least one projection integral with the pad and of the same resilient plastic, said projection having a circumferential groove to receive said circumferential locking rib, the projection comprising a wall defining a hollow interior to allow deforming of the projection, said method comprising resiliently deforming the projection and passing it so deformed into the aperture to engage said locking rib with said circumferential groove, releasing the deforming force on the projection, inserting a plug into the hollow interior of the projection to force the projection wall against the aperture wall and lock the pad to the link body, the plug being of a size and shape corresponding to the hollow interior of the projection.
Claim 2
Independent Claim
188 words
A method of applying a wear surface pad to a link body of an endless track of a tracked vehicle, said link body having at least one aperture where the aperture wall is provided with a circumferential locking rib defining a neck in the aperture which is smaller in diameter than the remainder of the aperture and is intermediate the ends thereof, the wear surface pad being of resilient plastic and which has at least one projection integral with the pad and of the same resilient plastic, said projection having a circumferential groove to receive said circumferential locking rib, the projection comprising a wall defining a hollow interior to allow deforming of the projection, said method comprising resiliently deforming the projection and passing it so deformed into the aperture to engage said locking rib with said circumferential groove, releasing the deforming force on the projection, inserting a plug into the hollow interior of the projection to force the projection wall against the aperture wall and lock the pad to the link body, the plug being of a size and shape corresponding to the hollow interior of the projection.
Claim 3
Dependent Claim
36 words
A method according to claim 1 wherein said pad is provided with two spaced projections which are inserted into two corresponding apertures in the link body and inserting a plug into each recess of the projections.
Claim 4
Dependent Claim
17 words
A method according to claim 1 wherein the plug is of a harder material than the pad.
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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) | 1990-09-21 | 1991-03-23 | 1991-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-21 | 1995-03-23 | 1995-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-21 | 1999-03-23 | 1999-09-22 | $7700.00 | Window Closed / Lapsed |