US3214192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor pusher shock cushioning attachments
Assignee: Rockwell Manufacturing Co
•
Filing: 1961-10-16
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Granted: 1965-10-26
•
Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Norman R Hamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:40
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
FOR A TRACTOR OR THE LIKE, A PUSHER ATTACHMENT COMPRISING: (A) A PUSH MEMBER, (B) MEANS FOR MOUNTING SAID PUSH MEMBER ON SAID TRACTOR FOR PARALLEL MOVEMENT TOWARD AND AWAY FROM SAID TRACTOR COMPRISING A PAIR OF GUIDE MEMBERS ARRANGED ONE WITHIN THE OTHER FOR SUBSTANTIALLY PARALLEL TELESCOPIC MOVEMENT, (C) HYDRAULIC SHOCK ABSORBING MEANS PIVOTALLY CONNECTED WITHIN SAID TELESCOPIC GUIDE MEMBERS BETWEEN SAID MOUNTING MEANS AND SAID PUSH MEMBER AND ADAPTED TO PROGRESSIVELY RESIST MOVEMENT OF THE PUSH MEMBER TOWARD THE TRACTOR, (D) A FLUID RESERVOIR AND MEANS PROVIDING FLUID COMMUNICATION BETWEEN SAID SHOCK ABSORBER AND SAID RESERVOIR INCLUDING MEANS FOR REGULATING THE RESISTANCE OFFERED BY SAID SHOCK ABSORBER.
References Cited (Backward Citations)
US1570479A
Cited
US1658962A
Cited
US1821787A
Cited
US1977817A
Cited
US2404931A
Cited
US2919142A
Cited
US2999697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |