US3142373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bodily adjustable conveyor
Assignee: Gullick Ltd
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Filing: 1962-11-19
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Granted: 1964-07-28
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Expires: 1982-11-19
Abstract
No abstract record available.
Inventors
- 👤 Pollard Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:40
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/08; E21F13/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
IN COMBINATION, A CONVEYOR HAVING TWO BRACKET MEANS PROJECTING LATERALLY FROM IT AND SPACED APART RESPECTIVELY ALONG THE LENGTH OF THE CONVEYOR, PRESSURE-FLUIDOPERATED RAM MEANS FOR MOVING THE CONVEYOR IN A DIRECTION AT RIGHT-ANGLES TO ITS LENGTH SO AS TO ADVANCE IT TOWARDS A COAL FACE, TWO ABUTMENT DEVICES HAVING RELEASABLE PRESSURE-FLUID OPERATED PROP MEANS FOR SECURING THEM BETWEEN FLOOR AND ROOF, ONE ADJACENT ONE OF SAID BRACKET MEANS ON THE CONVEYOR AND ONE ADJACENT THE OTHER OF SAID BRACKET MEANS ON THE CONVEYOR, AND MEANS ON SAID ABUTMENT DEVICES ENGAGING THEIR ADJACENT BRACKET MEANS ON THE CONVEYOR TO HOLD THE CONVEYOR AGAINST DOWN-SEAM MOVEMENT WHEN ON AN INCLINED SEAM, ONE OF SAID BRACKETENGAGING MEANS COMPRISING PRESSURE-FLUID-OPERATED RAM MEANS HAVING A RAM OPERATIVE TO ACT IN THE DIRECTION OF LENGTH OF THE CONVEYOR AND TO MOVE THE CONVEYOR IN THE DIRECTION OF ITS LENGTH TO CORRECT ANY DOWN-SEAM MOVEMENT WHICH TAKES PLACE WHEN THE CONVEYOR IS ADVANCED TOWARDS THE COAL FACE.
Claim 2
Dependent Claim
161 words
IN COMBINATION, A CONVEYOR HAVING TWO BRACKET MEANS PROJECTING LATERALLY FROM IT AND SPACED APART RESPECTIVELY ALONG THE LENGTH OF THE CONVEYOR, PRESSURE-FLUIDOPERATED RAM MEANS FOR MOVING THE CONVEYOR IN A DIRECTION AT RIGHT-ANGLES TO ITS LENGTH SO AS TO ADVANCE IT TOWARDS A COAL FACE, TWO ABUTMENT DEVICES HAVING RELEASABLE PRESSURE-FLUID OPERATED PROP MEANS FOR SECURING THEM BETWEEN FLOOR AND ROOF, ONE ADJACENT ONE OF SAID BRACKET MEANS ON THE CONVEYOR AND ONE ADJACENT THE OTHER OF SAID BRACKET MEANS ON THE CONVEYOR, AND MEANS ON SAID ABUTMENT DEVICES ENGAGING THEIR ADJACENT BRACKET MEANS ON THE CONVEYOR TO HOLD THE CONVEYOR AGAINST DOWN-SEAM MOVEMENT WHEN ON AN INCLINED SEAM, ONE OF SAID BRACKETENGAGING MEANS COMPRISING PRESSURE-FLUID-OPERATED RAM MEANS HAVING A RAM OPERATIVE TO ACT IN THE DIRECTION OF LENGTH OF THE CONVEYOR AND TO MOVE THE CONVEYOR IN THE DIRECTION OF ITS LENGTH TO CORRECT ANY DOWN-SEAM MOVEMENT WHICH TAKES PLACE WHEN THE CONVEYOR IS ADVANCED TOWARDS THE COAL FACE.
References Cited (Backward Citations)
GB569502A
Cited
FR1226776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |