Patent US4050803A successfully refreshed from Google Patents.
Patent US3301384A successfully refreshed from Google Patents.
US3301384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensating roller and limit means therefor
Assignee: Individual
•
Filing: 1965-03-19
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Granted: 1967-01-31
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Expires: 1985-03-19
Abstract
No abstract record available.
Inventors
- 👤 Edward W Sowards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:40
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/10; B65G39/12; B65G39/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A CONTROL DEVICE FOR MAINTAINING PROPER RUNNING ALIGNMENT OF A CONVEYOR BELT ON ITS PULLEYS, COMPRISING IN COMBINATION WITH SUCH CONVEYOR BELT; A LONGITUDINAL FRAME, A CONVEYOR PULLEY ASSEMBLY, A BEARING SUPPORTING SAID CONVEYOR PULLEY ASSEMBLY, A TRANSVERSE FRAME MEMBER SUPPORTING SAID PULLEY ASSEMBLY AND BEARING ON SAID LONGITUDINAL FRAME, A LINK PIVOTALLY CONNECTED TO SAID PULLEY ASSEMBLY FOR SHIFTING SAID PULLEY ASSEMBLY BY PIVOTAL MOVEMENT ABOUT SAID BEARING, A LEVER ARM PIVOTALLY CARRIED ON SAID LINK AND CONNECTED TO THE LONGITUDINAL FRAME SUPPORTING SAID PULLEY ASSEMBLY TO EFFECT SUCH SHIFTING, A DIFFERENTIAL GEAR UNIT MOUNTED ON A TRANSVERSE FRAME MEMBER CONNECTED TO SAID LONGITUDINAL FRAME, A THREADED SHAFT ON SAID DIFFERENTIAL GEAR UNIT CONNECTED TO SAID LEVER ARM, AND MEANS ENGAGEABLE WITH SAID CONVEYOR BELT AND CONNECTED TO SAID DIFFERENTIAL GEAR UNIT AND OPERABLE WHEN THE CONVEYOR BELT VEERS TO ONE SIDE OF ITS REGULAR PATH OF TRAVEL FOR ACTUATING SAID DIFFERENTIAL GEAR UNIT TO MOVE SAID LEVER ARM IN A DIRECTION TO PIVOT SAID PULLEY ASSEMBLY TO THE PROPER SIDE OF THE BELT TO RETURN THE BELT TO ITS CENTRALIZED RUNNING POSITION ON SAID PULLEY ASSEMBLY, SAID MEANS BEING IN WORKING ARRANGEMENT WITH SAID THREAD SHAFT.
Claim 2
Dependent Claim
198 words
A CONTROL DEVICE FOR MAINTAINING PROPER RUNNING ALIGNMENT OF A CONVEYOR BELT ON ITS PULLEYS, COMPRISING IN COMBINATION WITH SUCH CONVEYOR BELT; A LONGITUDINAL FRAME, A CONVEYOR PULLEY ASSEMBLY, A BEARING SUPPORTING SAID CONVEYOR PULLEY ASSEMBLY, A TRANSVERSE FRAME MEMBER SUPPORTING SAID PULLEY ASSEMBLY AND BEARING ON SAID LONGITUDINAL FRAME, A LINK PIVOTALLY CONNECTED TO SAID PULLEY ASSEMBLY FOR SHIFTING SAID PULLEY ASSEMBLY BY PIVOTAL MOVEMENT ABOUT SAID BEARING, A LEVER ARM PIVOTALLY CARRIED ON SAID LINK AND CONNECTED TO THE LONGITUDINAL FRAME SUPPORTING SAID PULLEY ASSEMBLY TO EFFECT SUCH SHIFTING, A DIFFERENTIAL GEAR UNIT MOUNTED ON A TRANSVERSE FRAME MEMBER CONNECTED TO SAID LONGITUDINAL FRAME, A THREADED SHAFT ON SAID DIFFERENTIAL GEAR UNIT CONNECTED TO SAID LEVER ARM, AND MEANS ENGAGEABLE WITH SAID CONVEYOR BELT AND CONNECTED TO SAID DIFFERENTIAL GEAR UNIT AND OPERABLE WHEN THE CONVEYOR BELT VEERS TO ONE SIDE OF ITS REGULAR PATH OF TRAVEL FOR ACTUATING SAID DIFFERENTIAL GEAR UNIT TO MOVE SAID LEVER ARM IN A DIRECTION TO PIVOT SAID PULLEY ASSEMBLY TO THE PROPER SIDE OF THE BELT TO RETURN THE BELT TO ITS CENTRALIZED RUNNING POSITION ON SAID PULLEY ASSEMBLY, SAID MEANS BEING IN WORKING ARRANGEMENT WITH SAID THREAD SHAFT.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |