Patent US3245334A successfully refreshed from Google Patents.
US3245334A
Expired / Lapsed
US
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Noncontacting sealing method and apparatus
Assignee: EIDP Inc
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Filing: 1962-08-27
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Granted: 1966-04-12
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Expires: 1982-08-27
Abstract
No abstract record available.
Inventors
- 👤 Long Cecil Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:49
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/14; D21F5/146; D06; D06B; D06B23/00; D06B23/14; D06B23/18; D21G; D21G9/00; F; F16; F16J; F16J15/00; F16J15/16; F16J15/168; F26; F26B; F26B13/00; F26B13/005; Y; Y10; Y10S; Y10S277/00; Y10S277/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN AN APPARATUS COMPRISING A PAIR OF CHAMBERS TO BE MAINTAINED UNDER DIFFERENT ENVIRONMENTS WITH A CONTINUOUS WEB MOVING THEREBETWEEN, A DEVICE FOR PRODUCING A SEAL BETWEEN SAID CHAMBERS COMPRISING A PAIR OF CLOSELY-SPACED MEMBERS LOCATED ON EITHER SIDE OF SAID WEB, AT LEAST ONE OF SAID MEMBERS BEING POROUS, AND MEANS FOR FORCING A GAS THROUGH SAID POROUS MEMBER UNDER SUFFICIENT PRESURE TO PREVENT PHYSICAL CONTACT OF SAID WEB WITH THE SIDE OF SAID SEAL CONTAINING SAID POROUS MEMBER.
Claim 2
Dependent Claim
80 words
IN AN APPARATUS COMPRISING A PAIR OF CHAMBERS TO BE MAINTAINED UNDER DIFFERENT ENVIRONMENTS WITH A CONTINUOUS WEB MOVING THEREBETWEEN, A DEVICE FOR PRODUCING A SEAL BETWEEN SAID CHAMBERS COMPRISING A PAIR OF CLOSELY-SPACED MEMBERS LOCATED ON EITHER SIDE OF SAID WEB, AT LEAST ONE OF SAID MEMBERS BEING POROUS, AND MEANS FOR FORCING A GAS THROUGH SAID POROUS MEMBER UNDER SUFFICIENT PRESURE TO PREVENT PHYSICAL CONTACT OF SAID WEB WITH THE SIDE OF SAID SEAL CONTAINING SAID POROUS MEMBER.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |