US3332725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recoil and suspension mechanism for track-type tractors
Assignee: Caterpillar Inc
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Filing: 1965-10-04
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Granted: 1967-07-25
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Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Harold L Reinsma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:18
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/30; B62D55/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A TRACTOR HAVING A DRIVE SPROCKET, AN IDLER, A RIGID FRAME EXTENDING BETWEEN THE AXES OF SAID SPROCKET AND IDLER, A TRACK TRAINED OVER THE SPROCKET AND IDLER, MEANS PERMITTING THE IDLER TO RECOIL PARALLEL TO THE FRAME AND TOWARD THE SPROCKET, AND A RECOIL SPRING DISPOSED HORIZONTALLY AND PARALLEL TO THE FRAME OPPOSING SUCH RECOIL MOVEMENT, THE IMPROVEMENT WHICH COMPRISES MEANS TO PERMIT THE IDLER TO MOVE UPWARDLY, AND A CONNECTION BETWEEN SAID LAST MEANS AND THE RECOIL SPRING WHEREBY THE SPRING WILL OPPOSE SAID UPWARD MOVEMENT, SAID MEANS PERMITTING UPWARD MOVEMENT COMPRISING BLOCKS SUPPORTING A SHAFT UPON WHICH THE IDLER ROTATES, AND PIVOTAL SUP-
Claim 2
Dependent Claim
107 words
IN A TRACTOR HAVING A DRIVE SPROCKET, AN IDLER, A RIGID FRAME EXTENDING BETWEEN THE AXES OF SAID SPROCKET AND IDLER, A TRACK TRAINED OVER THE SPROCKET AND IDLER, MEANS PERMITTING THE IDLER TO RECOIL PARALLEL TO THE FRAME AND TOWARD THE SPROCKET, AND A RECOIL SPRING DISPOSED HORIZONTALLY AND PARALLEL TO THE FRAME OPPOSING SUCH RECOIL MOVEMENT, THE IMPROVEMENT WHICH COMPRISES MEANS TO PERMIT THE IDLER TO MOVE UPWARDLY, AND A CONNECTION BETWEEN SAID LAST MEANS AND THE RECOIL SPRING WHEREBY THE SPRING WILL OPPOSE SAID UPWARD MOVEMENT, SAID MEANS PERMITTING UPWARD MOVEMENT COMPRISING BLOCKS SUPPORTING A SHAFT UPON WHICH THE IDLER ROTATES, AND PIVOTAL SUP-
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |