Patent US3156601A successfully refreshed from Google Patents.
US3156601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire building drum
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1961-12-19
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Granted: 1964-11-10
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Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Virgil E Henley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:23
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
IN A TIRE BUILDING DRUM HAVING A SUPPORTING SHAFT AND TWO EXTERNALLY CYLINDRICAL EXPANSIBLE AND CONTRACTIBLE SECTIONS CONNECTED TO TURN IN UNISON, MEANS FOR EXPANDING SAID SECTIONS AND MEANS FOR ADJUSTING SAID SECTIONS AXIALLY TOWARD OR AWAY FROM ONE ANOTHER, THE COMBINATION THEREWITH OF AN EXPANSIBLE AND CONTRACTIBLE BAND BRIDGING THE SPACE BETWEEN SAID DRUM SECTIONS, TELESCOPICALLY RECEIVING SAID SECTIONS AND CONDORMING TO THE CURVATURE THEREOF, SAID BAND COMPRISING INTERCONNECTED SEGMENTS IN THE FORM OF STRAIGHT NARROW SUBSTANTIALLY FLAT SPRING STEEL STRIPS DISPOSED EDGE TO EDGE AND SLIDABLY ENGAGING THE EXTERNAL SURFACES OF SAID END SECTIONS, A METAL POSITIONING BLOCK ATTACHED TO THE INTERIOR FACE OF EACH SEGMENT SUBSTANTIALLY MIDWAY BETWEEN ITS ENDS, SAID BLOCKS HAVING INWARDLY CONVERGING CIRCUMFERENTIALLY SPACED FACES THAT ABUT WHEN THE DRUM IS CONTRACTED TO ITS MINIMUM DIAMETER, SAID BLOCKS BEING OF THE SAM E AXIAL WIDTH WITH THE SIDE FACES PERPENDICULAR TO THE DRUM AXIS AND OF A
Claim 2
Dependent Claim
153 words
IN A TIRE BUILDING DRUM HAVING A SUPPORTING SHAFT AND TWO EXTERNALLY CYLINDRICAL EXPANSIBLE AND CONTRACTIBLE SECTIONS CONNECTED TO TURN IN UNISON, MEANS FOR EXPANDING SAID SECTIONS AND MEANS FOR ADJUSTING SAID SECTIONS AXIALLY TOWARD OR AWAY FROM ONE ANOTHER, THE COMBINATION THEREWITH OF AN EXPANSIBLE AND CONTRACTIBLE BAND BRIDGING THE SPACE BETWEEN SAID DRUM SECTIONS, TELESCOPICALLY RECEIVING SAID SECTIONS AND CONDORMING TO THE CURVATURE THEREOF, SAID BAND COMPRISING INTERCONNECTED SEGMENTS IN THE FORM OF STRAIGHT NARROW SUBSTANTIALLY FLAT SPRING STEEL STRIPS DISPOSED EDGE TO EDGE AND SLIDABLY ENGAGING THE EXTERNAL SURFACES OF SAID END SECTIONS, A METAL POSITIONING BLOCK ATTACHED TO THE INTERIOR FACE OF EACH SEGMENT SUBSTANTIALLY MIDWAY BETWEEN ITS ENDS, SAID BLOCKS HAVING INWARDLY CONVERGING CIRCUMFERENTIALLY SPACED FACES THAT ABUT WHEN THE DRUM IS CONTRACTED TO ITS MINIMUM DIAMETER, SAID BLOCKS BEING OF THE SAM E AXIAL WIDTH WITH THE SIDE FACES PERPENDICULAR TO THE DRUM AXIS AND OF A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |