Patent US581142A successfully refreshed from Google Patents.
US3136171A
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Overload sprocket for track laying vehicles
Assignee: Robin Nodwell Manufacturing Ltd
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Filing: 1961-10-26
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Granted: 1964-06-09
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Expires: 1981-10-26
Abstract
No abstract record available.
Inventors
- 👤 Nodwell William Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:41
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/096; B62D55/0963; Y; Y10; Y10S; Y10S474/00; Y10S474/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A DRIVING WHEEL FOR A TRACK OF A TRACKED VEHICLE COMPRISING A PAIR OF AXIALLY SPACED APART LOAD SPROCKETS HAVING DRIVING TEETH THEREON, SAID TEETH HAVING FACES ARRANGED TO ENGAGE GROUSER BARS ON THE TRACK, A PAIR OF AXIALLY SPACED APART OVERLOAD SPROCKETS MOUNTED BETWEEN SAID LOAD SPROCKETS, SAID OVERLOAD SPROCKETS HAVING OVERLOAD TEETH ARRANGED TO ASSUME THE LOAD OF THE GROUSER BARS ONLY IN THE CASE OF OVERLOAD CONDITIONS UNDER WHICH THE TRACK STRETCHES, AND SPACER MEANS ARRANGED BETWEEN SAID OVERLOAD TEETH TO IMPEDE THE COLLECTION OF DEBRIS BETWEEN SAID OVERLOAD SPROCKETS.
Claim 2
Dependent Claim
93 words
A DRIVING WHEEL FOR A TRACK OF A TRACKED VEHICLE COMPRISING A PAIR OF AXIALLY SPACED APART LOAD SPROCKETS HAVING DRIVING TEETH THEREON, SAID TEETH HAVING FACES ARRANGED TO ENGAGE GROUSER BARS ON THE TRACK, A PAIR OF AXIALLY SPACED APART OVERLOAD SPROCKETS MOUNTED BETWEEN SAID LOAD SPROCKETS, SAID OVERLOAD SPROCKETS HAVING OVERLOAD TEETH ARRANGED TO ASSUME THE LOAD OF THE GROUSER BARS ONLY IN THE CASE OF OVERLOAD CONDITIONS UNDER WHICH THE TRACK STRETCHES, AND SPACER MEANS ARRANGED BETWEEN SAID OVERLOAD TEETH TO IMPEDE THE COLLECTION OF DEBRIS BETWEEN SAID OVERLOAD SPROCKETS.
References Cited (Backward Citations)
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |