Patent US3268750A successfully refreshed from Google Patents.
US3268750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-motion feedthrough apparatus
Assignee: Unisys Corp
•
Filing: 1963-07-26
•
Granted: 1966-08-23
•
Expires: 1983-07-26
Abstract
No abstract record available.
Inventors
- 👤 Johannes F Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:50
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
IN A DUAL-MOTION FEEDTHROUGH APPARATUS FOR A HIGH VACUUM CHAMBER THE COMBINATION COMPRISING, AN ELONGATED HOUSING OF NONMAGNETIC MATERIAL HAVING AN END PORTION COLLAPSIBLE ALONG ITS AXIS FOR SEALING SAID HIGH VACUUM CHAMBER, INNER MAGNET MEANS CONNECTED TO SAID COLLAPSIBLE END PORTION FOR MOVEMENT AXIALLY WITHIN SAID HOUSING, OUTER MAGNET MEANS MAGNETICALLY COUPLED TO SAID INNER MAGNET MEANS AND MOUNTED FOR ROTATION ABOUT AND FOR AXIAL MOVEMENT ALONG SAID ELONGATED HOUSING, AND MEANS FOR COLLAPSING THE END PORTION OF SAID ELONGATED HOUSING ALONG ITS AXIS.
References Cited (Backward Citations)
US2497702A
Cited
US2898485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |