US3283944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Barrel apparatus
Assignee: RICHARDSON ENGINEERING (BIRMINGHAM) Ltd
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Filing: 1963-06-19
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Granted: 1966-11-08
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Expires: 1983-06-19
Abstract
No abstract record available.
Inventors
- 👤 Richardson James Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:30
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
ROTATABLE BARREL APPARATUS COMPRISING, (A) A BARREL MOUNTED FOR ROTATION ABOUT A HORIZONTAL AXIS AND HAVING A DOOR OPENING IN ITS CIRCUMFERENTIAL WALL, (A) A DOOR SLIDABLY MOUNTED ON THE EXTERIOR OF THE BARREL AND MOVEABLE CIRCUMFERENTIALLY THEREOF BETWEEN AN OPEN POSITION AND A POSITION IN WHICH IT CLOSES SAID DOOR OPENING, (C) FIRST CATCH MEANS MOUNTED ON THE BARREL EXTERIOR AND SPACED CIRCUMFERENTIALLY AWAY FROM THE LEADING EDGE OF SAID OPENING, (D) A FIRST PROJECTING ON THE LEADING EDGE OF SAID DOOR ENGAGEABLE BY SAID FIRST CATCH MEANS TO HOLD THE DOOR IN THE OPEN POSITION, (E) SECOND CATCH MEANS MOUNTED ON THE BARREL EXTERIOR ADJACENT THE TRAILING EDGE OF SAID DOOR OPENING,
Claim 2
Dependent Claim
114 words
ROTATABLE BARREL APPARATUS COMPRISING, (A) A BARREL MOUNTED FOR ROTATION ABOUT A HORIZONTAL AXIS AND HAVING A DOOR OPENING IN ITS CIRCUMFERENTIAL WALL, (A) A DOOR SLIDABLY MOUNTED ON THE EXTERIOR OF THE BARREL AND MOVEABLE CIRCUMFERENTIALLY THEREOF BETWEEN AN OPEN POSITION AND A POSITION IN WHICH IT CLOSES SAID DOOR OPENING, (C) FIRST CATCH MEANS MOUNTED ON THE BARREL EXTERIOR AND SPACED CIRCUMFERENTIALLY AWAY FROM THE LEADING EDGE OF SAID OPENING, (D) A FIRST PROJECTING ON THE LEADING EDGE OF SAID DOOR ENGAGEABLE BY SAID FIRST CATCH MEANS TO HOLD THE DOOR IN THE OPEN POSITION, (E) SECOND CATCH MEANS MOUNTED ON THE BARREL EXTERIOR ADJACENT THE TRAILING EDGE OF SAID DOOR OPENING,
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |