Patent US3143240A successfully refreshed from Google Patents.
US3143240A
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Seal for vacuum chambers
Assignee: HIGH VACUUM EQUIPMENT CORP
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Filing: 1963-07-29
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Granted: 1964-08-04
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Walter C Crocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:40
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; B; B01; B01J; B01J3/00; B01J3/03; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/913; Y10S277/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A SEALING DEVICE, FOR A VACUUM SYSTEM, COMPRISING A FIRST ENCLOSURE MEMBER HAVING AN OPENING THEREIN, A SECOND ENCLOSURE MEMBER COUPLED TO SAID FIRST MEMBER AROUND SAID OPENING, SAID FIRST MEMBER HAVING A PAIR OF SPACED GROOVES AND A PAIR OF SPACED RIBS SURROUNDING SAID OPENING AND FACING TOWARD SAID SECOND MEMBER, AND SAID SECOND MEMBER HAVING A PAIR OF GROOVES AND A PAIR OF RIBS OPPOSING AND REGISTERING WITH THE RESPECTIVE GROOVES AND RIBS OF SAID FIRST MEMBER, EACH OF SAID RIBS CONSTITUT-
Claim 2
Dependent Claim
84 words
A SEALING DEVICE, FOR A VACUUM SYSTEM, COMPRISING A FIRST ENCLOSURE MEMBER HAVING AN OPENING THEREIN, A SECOND ENCLOSURE MEMBER COUPLED TO SAID FIRST MEMBER AROUND SAID OPENING, SAID FIRST MEMBER HAVING A PAIR OF SPACED GROOVES AND A PAIR OF SPACED RIBS SURROUNDING SAID OPENING AND FACING TOWARD SAID SECOND MEMBER, AND SAID SECOND MEMBER HAVING A PAIR OF GROOVES AND A PAIR OF RIBS OPPOSING AND REGISTERING WITH THE RESPECTIVE GROOVES AND RIBS OF SAID FIRST MEMBER, EACH OF SAID RIBS CONSTITUT-
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |