Patent US3101837A successfully refreshed from Google Patents.
US3101837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiper mechanism for conveyor belts
Assignee: Individual
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Filing: 1961-05-11
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Granted: 1963-08-27
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Expires: 1981-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert H Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:33
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/10; B65G45/12; B65G45/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A CONVEYOR INSTALLATION WHICH INCLUDES A FRAME A CONVEYOR BELT, AND MEANS MOVABLY MOUNTING SAID BELT ON SAID FRAME, SAID BELT HAVING AN UPPER CARRYING FLIGHT AND A LOWER RETURN FLIGHT, THE COMBINATION THEREWITH OF A WIPER MECHANISM COMPRISING A LEVER PIVOTED TO SAID FRAME INTERMEDIATE SAID CARRYING FLIGHT AND SAID RETURN FLIGHT, A WIPER SUPPORTED BY SAID LEVER AND ENGAGING SAID BELT ON ITS RETURN FLIGHT, MEANS SUPPORTED BY SAID LEVER AND ENGAGING SAID BELT ON ITS CARRYING FLIGHT AND A BIAS OPERATIVELY CONNECTED WITH SAID LEVER TO MAINTAIN SAID LAST-NAMED MEANS IN ENGAGEMENT WITH SAID BELT, WHEREBY THE POSITION OF SAID LEVER IS ADJSUTED AUTOMATICALLY WITH VARYING LOADS ON THE BELT TO MAINTAIN SUBSTANTIALLY UNIFORM PRESSURE OF SAID WIPER AGAISNT SAID BELT.
Claim 2
Dependent Claim
125 words
IN A CONVEYOR INSTALLATION WHICH INCLUDES A FRAME A CONVEYOR BELT, AND MEANS MOVABLY MOUNTING SAID BELT ON SAID FRAME, SAID BELT HAVING AN UPPER CARRYING FLIGHT AND A LOWER RETURN FLIGHT, THE COMBINATION THEREWITH OF A WIPER MECHANISM COMPRISING A LEVER PIVOTED TO SAID FRAME INTERMEDIATE SAID CARRYING FLIGHT AND SAID RETURN FLIGHT, A WIPER SUPPORTED BY SAID LEVER AND ENGAGING SAID BELT ON ITS RETURN FLIGHT, MEANS SUPPORTED BY SAID LEVER AND ENGAGING SAID BELT ON ITS CARRYING FLIGHT AND A BIAS OPERATIVELY CONNECTED WITH SAID LEVER TO MAINTAIN SAID LAST-NAMED MEANS IN ENGAGEMENT WITH SAID BELT, WHEREBY THE POSITION OF SAID LEVER IS ADJSUTED AUTOMATICALLY WITH VARYING LOADS ON THE BELT TO MAINTAIN SUBSTANTIALLY UNIFORM PRESSURE OF SAID WIPER AGAISNT SAID BELT.
References Cited (Backward Citations)
DE1037363B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |