US3159268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Training control for conveyor belts
Assignee: Rohm and Haas Co
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Filing: 1961-11-02
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Granted: 1964-12-01
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Expires: 1981-11-02
Abstract
No abstract record available.
Inventors
- 👤 Robert G Dyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:12
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/10; B65G39/12; B65G39/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
A DEVICE FOR MAINTAINING A BELT TRAINED OVER THE CENTRAL PORTION OF THE BEND PULLEY IN A BELT CONVEYOR INSTALLATION HAVING MEANS AT ONE END OF THE BEND PULLEY SHAFT FOR SWINGING THE SHAFT AXIS OF THE PULLEY IN A PLANE GENERALLY PARALLEL TO THE SUPPORTING SURFACE OF THE BELT, SAID DEVICE COMPRISING REVERSIBLE DRIVE MEANS COUPLED TO SWING THE BEND PULLEY AXIS AND THEREBY PROMOTE LATERAL SHIFTING OF SAID BELT ON SAID BEND PULLEY, FIRST SENSING MEANS OPERABLE BETWEEN TWO ACTUATED CONDITIONS BY LATERAL SHIFTING OF THE BELT ON THE BEND PULLEY, SECOND SENSING MEANS OPERABLE BETWEEN TWO ACTUATED CONDITIONS WHEN THE DIRECTION OF LATERAL SHIFTING OF THE BELT REVERSES, SAID FIRST SENSING MEANS BEING CONNECTED TO OPERATE SAID DRIVE MEANS IN ONE DIRECTION WHEN IN ONE ACTUATED CONDITION AND OPERATE SAID DRIVE MEANS IN THE OPPOSITE DIRECTION WHEN IN THE OTHER ACTUATED CONDITION, AND SECOND SENSING MEANS BEING INTERCONNECTED WITH SAID FIRST SENSING MEANS TO CHANGE THE CONDITION OF OPERATION OF SAID DRIVE MEANS UPON EACH REVERSAL IN DIRECTION OF LATERAL SHIFTING OF THE BELT AS SENSED BY SAID SECOND SENSING MEANS, SAID CONDITION CHANGE BEING BETWEEN A CONDITION OF OPERATION IN THE DIRECTION DETERMINED BY THE PARTICULAR ACTUATED CONDITION OF SAID FIRST SENSING MEANS AND A STOPPED CONDITION.
Claim 2
Independent Claim
211 words
A DEVICE FOR MAINTAINING A BELT TRAINED OVER THE CENTRAL PORTION OF THE BEND PULLEY IN A BELT CONVEYOR INSTALLATION HAVING MEANS AT ONE END OF THE BEND PULLEY SHAFT FOR SWINGING THE SHAFT AXIS OF THE PULLEY IN A PLANE GENERALLY PARALLEL TO THE SUPPORTING SURFACE OF THE BELT, SAID DEVICE COMPRISING REVERSIBLE DRIVE MEANS COUPLED TO SWING THE BEND PULLEY AXIS AND THEREBY PROMOTE LATERAL SHIFTING OF SAID BELT ON SAID BEND PULLEY, FIRST SENSING MEANS OPERABLE BETWEEN TWO ACTUATED CONDITIONS BY LATERAL SHIFTING OF THE BELT ON THE BEND PULLEY, SECOND SENSING MEANS OPERABLE BETWEEN TWO ACTUATED CONDITIONS WHEN THE DIRECTION OF LATERAL SHIFTING OF THE BELT REVERSES, SAID FIRST SENSING MEANS BEING CONNECTED TO OPERATE SAID DRIVE MEANS IN ONE DIRECTION WHEN IN ONE ACTUATED CONDITION AND OPERATE SAID DRIVE MEANS IN THE OPPOSITE DIRECTION WHEN IN THE OTHER ACTUATED CONDITION, AND SECOND SENSING MEANS BEING INTERCONNECTED WITH SAID FIRST SENSING MEANS TO CHANGE THE CONDITION OF OPERATION OF SAID DRIVE MEANS UPON EACH REVERSAL IN DIRECTION OF LATERAL SHIFTING OF THE BELT AS SENSED BY SAID SECOND SENSING MEANS, SAID CONDITION CHANGE BEING BETWEEN A CONDITION OF OPERATION IN THE DIRECTION DETERMINED BY THE PARTICULAR ACTUATED CONDITION OF SAID FIRST SENSING MEANS AND A STOPPED CONDITION.
References Cited (Backward Citations)
US2346765A
Cited
US2347893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |