Patent US3225929A successfully refreshed from Google Patents.
US3225929A
Expired / Lapsed
US
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Closure means for filter containing pressure vessels
Assignee: AMF Inc
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Filing: 1961-10-11
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Granted: 1965-12-28
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Expires: 1981-10-11
Abstract
No abstract record available.
Inventors
- 👤 Sicard Marcel Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:37
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/30; B01D2201/00; B01D2201/30; B01D2201/301; B01D2201/302; Y; Y10; Y10T; Y10T292/00; Y10T292/20; Y10T292/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A PRESSURE CONTAINER ENCLOSING A FILTER ELEMENT, COMPRISING A HEADT AND A SUMP, ONE OF WHICH HAS A SCREW THREAD AND THE OTHER A FLANGED EDGE RESPECTIVELY, SAID ELEMENT HAVING ONE END ENGAGING SAID HEAD AND THE OTHER END ENGAGING SAID SUMP, ONE END OF SAID ELEMENT BEING ROTATABLE RELATIVE TO SAID SUMP, WHEREBY SAID ELEMENT MAY BE FIXED WITHIN SAID CONTAINER, A CLOSURE NUT FOR SEALING SAID HEAD AND SUMP, SAID NUT BEING THREADED TO ENGAGE SAID SCREW THREAD AND HAVING A FLANGE TO ENGAGE SAID FIRST MENTIONED FLANGE, SAID FIRST MENTIONED FLANGE AND SAID NUT FLANGE HAVING INTERLOCKING MEANS FOR CAUSING POSITIVE ENGAGEMENT THEREBETWEEN AND CONJOINT ROTATION OF THE FLANGED MEMBER AND SAID NUT DURING CLOSURE AND OPENING OF SAID CONTAINER.
Claim 2
Dependent Claim
123 words
A PRESSURE CONTAINER ENCLOSING A FILTER ELEMENT, COMPRISING A HEADT AND A SUMP, ONE OF WHICH HAS A SCREW THREAD AND THE OTHER A FLANGED EDGE RESPECTIVELY, SAID ELEMENT HAVING ONE END ENGAGING SAID HEAD AND THE OTHER END ENGAGING SAID SUMP, ONE END OF SAID ELEMENT BEING ROTATABLE RELATIVE TO SAID SUMP, WHEREBY SAID ELEMENT MAY BE FIXED WITHIN SAID CONTAINER, A CLOSURE NUT FOR SEALING SAID HEAD AND SUMP, SAID NUT BEING THREADED TO ENGAGE SAID SCREW THREAD AND HAVING A FLANGE TO ENGAGE SAID FIRST MENTIONED FLANGE, SAID FIRST MENTIONED FLANGE AND SAID NUT FLANGE HAVING INTERLOCKING MEANS FOR CAUSING POSITIVE ENGAGEMENT THEREBETWEEN AND CONJOINT ROTATION OF THE FLANGED MEMBER AND SAID NUT DURING CLOSURE AND OPENING OF SAID CONTAINER.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |