US3135128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for chain joint
Assignee: Chain Belt Co
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Filing: 1961-12-08
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Granted: 1964-06-02
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Expires: 1981-12-08
Abstract
No abstract record available.
Inventors
- 👤 Richard O Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:25
CPC Classifications
F; F16; F16G; F16G13/00; F16G13/02; F16G13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
IN A CHAIN JOINT FORMED BY OVERLYING PIN PLATES AND BUSHING PLATES RESPECTIVELY MOUNTED ON THE ENDS OF A PIN AND ENDS OF A BUSHING TURNABLE ON THE PIN, A SPACER COLLAR BETWEEN EACH END OF THE BUSHING AND THE ADJACENT PIN PLATE, MEANS SECURING THE PIN PLATES AXIALLY ON THE PIN SO THAT SAID COLLARS MAINTAIN THE SPACING OF THE OVERLYING PLATES WITHIN PREDETERMINED LIMITS, AND A SERIES OF WASHERS MOUNTED OVER EACH COLLAR AND UNDER LIMITED COMPRESSION BETWEEN THE ADJACENT PLATES, SAID SERIES INCLUDING TWO WASHERS IN FACE-TO-FACE ENGAGEMENT HAVING A NOMINAL THICKNESS AND A LOW COEFFICIENT OF FRICTION AND TWO WASHERS OF RESILIENT MATERIAL AND HIGH COEFFICIENT OF FRICTION HAVING DIRECT ENGAGEMENT RESPECTIVELY WITH SAID PLATES AND LOW-FRICTION WASHERS AND HAVING A NORMAL THICKNESS GREATER THAN THE SPECIFIED SPACING WHEREBY SAID LOW-FRICTION WASHERS ARE MAINTAINED IN SAID FACE-TO-FACE AND SEALING RELATION, SAID WASHERS AND THE COLLAR HAVING A CLEARANCE THEREBETWEEN AND THE PERIPHERY OF THE WASHERS BEING FREE SO THAT THE TWO RESILIENT HIGH FRICTION WASHERS ARE ALLOWED TO MOVE IN ALL DIRECTIONS WITH THE RESPECTIVE PLATES.
Claim 2
Dependent Claim
180 words
IN A CHAIN JOINT FORMED BY OVERLYING PIN PLATES AND BUSHING PLATES RESPECTIVELY MOUNTED ON THE ENDS OF A PIN AND ENDS OF A BUSHING TURNABLE ON THE PIN, A SPACER COLLAR BETWEEN EACH END OF THE BUSHING AND THE ADJACENT PIN PLATE, MEANS SECURING THE PIN PLATES AXIALLY ON THE PIN SO THAT SAID COLLARS MAINTAIN THE SPACING OF THE OVERLYING PLATES WITHIN PREDETERMINED LIMITS, AND A SERIES OF WASHERS MOUNTED OVER EACH COLLAR AND UNDER LIMITED COMPRESSION BETWEEN THE ADJACENT PLATES, SAID SERIES INCLUDING TWO WASHERS IN FACE-TO-FACE ENGAGEMENT HAVING A NOMINAL THICKNESS AND A LOW COEFFICIENT OF FRICTION AND TWO WASHERS OF RESILIENT MATERIAL AND HIGH COEFFICIENT OF FRICTION HAVING DIRECT ENGAGEMENT RESPECTIVELY WITH SAID PLATES AND LOW-FRICTION WASHERS AND HAVING A NORMAL THICKNESS GREATER THAN THE SPECIFIED SPACING WHEREBY SAID LOW-FRICTION WASHERS ARE MAINTAINED IN SAID FACE-TO-FACE AND SEALING RELATION, SAID WASHERS AND THE COLLAR HAVING A CLEARANCE THEREBETWEEN AND THE PERIPHERY OF THE WASHERS BEING FREE SO THAT THE TWO RESILIENT HIGH FRICTION WASHERS ARE ALLOWED TO MOVE IN ALL DIRECTIONS WITH THE RESPECTIVE PLATES.
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |