US3258196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrahigh vacuum pump
Assignee: MOUNT VERNON RES CO
•
Filing: 1963-11-04
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Granted: 1966-06-28
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Frank A Knox
- 👤 Gaines W Monk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:25
CPC Classifications
F; F04; F04F; F04F9/00; H; H01; H01J; H01J41/00; H01J41/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
AN ULTRAHIGH VACUUM PUMP FOR EVACUATING AN ULTRAHIHG VACUUM SYSTEM COMPRISING CRYOPUMPING MEANS FOR REMOVING CONDENSABLE GASES FROM SAID SYSTEM, DIFFUSION PUMPING MEANS FOR REMOVING NON-CONDENSABLE GASES FROM SAID SYSTEM, A SINGLE INTEGRAL HOUSING ENCLOSING SAID CYROPUMPING MEANS AND SAID DIFFUSION PUMPING MEANS, SAID HOUSING HAVING AN OPEN END AND A SUBSTANTIALLY CLOSED END, SAID CRYOPUMPING MEANS BEING LOCATED BETWEEN SAID DIFFUSION PUMPING MEANS AND SAID OPEN END, AND DETACHABLE MEANS INCLUDING A FILL PIPE AND AN EXHAUST PIPE FOR SAID CRYOPUMPING MEANS FOR SUPPORTING SAID CRYOPUMPING MEANS IN SAID HOUSING SO THAT SAID CRYOPUMPING MEANS MAY BE READILY REMOVED FROM SAID HOUSING THROUGH SAID OPEN END TO PROVIDE ACESS TO SAID DIFFUSION PUMPING MEANS FOR SERVICING.
Claim 2
Dependent Claim
117 words
AN ULTRAHIGH VACUUM PUMP FOR EVACUATING AN ULTRAHIHG VACUUM SYSTEM COMPRISING CRYOPUMPING MEANS FOR REMOVING CONDENSABLE GASES FROM SAID SYSTEM, DIFFUSION PUMPING MEANS FOR REMOVING NON-CONDENSABLE GASES FROM SAID SYSTEM, A SINGLE INTEGRAL HOUSING ENCLOSING SAID CYROPUMPING MEANS AND SAID DIFFUSION PUMPING MEANS, SAID HOUSING HAVING AN OPEN END AND A SUBSTANTIALLY CLOSED END, SAID CRYOPUMPING MEANS BEING LOCATED BETWEEN SAID DIFFUSION PUMPING MEANS AND SAID OPEN END, AND DETACHABLE MEANS INCLUDING A FILL PIPE AND AN EXHAUST PIPE FOR SAID CRYOPUMPING MEANS FOR SUPPORTING SAID CRYOPUMPING MEANS IN SAID HOUSING SO THAT SAID CRYOPUMPING MEANS MAY BE READILY REMOVED FROM SAID HOUSING THROUGH SAID OPEN END TO PROVIDE ACESS TO SAID DIFFUSION PUMPING MEANS FOR SERVICING.
References Cited (Backward Citations)
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Cited
US2286207A
Cited
US2282777A
Cited
US2703673A
Cited
GB850172A
Cited
US2855140A
Cited
US3168819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |