US3585097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expandable drum and heat sealing means
Assignee: Phillips Petroleum Co
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Filing: 1968-05-22
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Granted: 1971-06-15
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Expires: 1988-05-22
Abstract
Abstract IN A DRUM THE CIRCUMFERENCE MAY BE VARIED BY MOVING THE SIDE SEGMENTS OF THE DRUM IN A RADIAL DIRECTION. THE SIDES OF THE DRUM ARE MADE UP OF A SERIES OF SIDE SEGMENTS AND EACH OF THE TWO END MEMBERS OF THE DRUM IS MADE UP OF A PAIR OF END PLATES. ONE END PLATE IN EACH PAIR OF END MEMBERS HAS A SERIES OF STRAIGHT SLOTS AND THE OTHER END PLATE OF THAT PAIR HAS A SERIES OF ARCUATE SLOTS. BY ROTATING ONE END PLATE WITH RESPECT TO THE OTHER END PLATE IN EACH END MEMBER, THE SIDE SEGMENTS WHICH HAVE BEEN FITTED INTO THE SLOTS WILL MOVE IN A RADIAL DIRECTION THEREBY VARYING THE CIRCUMFERENCE OF THE DRUM.
Inventors
- 👤 Elmer C Beason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:25
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/834; B29C66/8351; B29C66/83511; B29C65/00; B29C65/02; B29C65/18; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/82; B29C66/822; B29C66/8226; B29C66/83517; B29C66/84; B29C66/841; B29C66/8412; B29C66/851; B29C66/8511; B65; B65H; B65H27/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/81; B29C66/818; B29C66/8187; B29C66/81871; B29C66/82263; B31; B31B; B31B50/00; B31B50/60; B31B50/64; B65H2404/00; B65H2404/10; B65H2404/11; B65H2404/112; B65H2404/1121; B65H2404/115; B65H2404/1152; B65H2404/13; B65H2404/138; B65H2404/1385; B65H2404/40; B65H2404/41; B65H2404/411
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |