Patent US3160404A successfully refreshed from Google Patents.
US3160404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum oven muffle seal
Assignee: Baker and Co Inc
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Filing: 1961-02-17
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Granted: 1964-12-08
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Expires: 1981-02-17
Abstract
No abstract record available.
Inventors
- 👤 Frank A Potenzo
- 👤 Raymond L Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:14
CPC Classifications
F; F26; F26B; F26B19/00; F27; F27B; F27B5/00; F27B5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A VACUUM OVEN HAVING, IN COMBINATION, A MUFFLE HAVING AN OPEN END, A RESILIENT, NON-METALLIC SEAL MEMBER EXTENDING ENTIRELY AROUND THE OUTSIDE OF SAID END WITH A RELATIVELY SMALL PORTION THEREOF PROJECTING FROM SAID END, THE MUFFLE HAVING SUPPORT MEANS FOR THE SEAL MEMBER IN POSITION TO RESIST COMPRESSION THEREOF TOWARD SAID END, A LIQUID COOLING RING SURROUNDING THE SEAL MEMBER IN HEAT TRANSFER CONTACT THEREWITH AND SEPARATED FROM THE MUFFLE BY THE SEAL MEMBER, THE SEAL MEMBER ALSO EXTENDING BEYOND SAID OPEN END AND THE COOLING RING, AND A DOOR FOR THE MUFFLE HAVING A PRESSURE PLATE TO ENGAGE THE SEAL MEMBER, A SUPPORT TO CARRY THE PRESSURE PLATE AND TO CLOST ABOUT THE END OF THE MUFFLE, AND SPRING SUSPENSION MEANS ENGAGED BETWEEN SAID SUPPORT AND PRESSURE PLATE, WHEREBY THE PLATE COMPRESSES THE SEAL MEM-
Claim 2
Dependent Claim
137 words
A VACUUM OVEN HAVING, IN COMBINATION, A MUFFLE HAVING AN OPEN END, A RESILIENT, NON-METALLIC SEAL MEMBER EXTENDING ENTIRELY AROUND THE OUTSIDE OF SAID END WITH A RELATIVELY SMALL PORTION THEREOF PROJECTING FROM SAID END, THE MUFFLE HAVING SUPPORT MEANS FOR THE SEAL MEMBER IN POSITION TO RESIST COMPRESSION THEREOF TOWARD SAID END, A LIQUID COOLING RING SURROUNDING THE SEAL MEMBER IN HEAT TRANSFER CONTACT THEREWITH AND SEPARATED FROM THE MUFFLE BY THE SEAL MEMBER, THE SEAL MEMBER ALSO EXTENDING BEYOND SAID OPEN END AND THE COOLING RING, AND A DOOR FOR THE MUFFLE HAVING A PRESSURE PLATE TO ENGAGE THE SEAL MEMBER, A SUPPORT TO CARRY THE PRESSURE PLATE AND TO CLOST ABOUT THE END OF THE MUFFLE, AND SPRING SUSPENSION MEANS ENGAGED BETWEEN SAID SUPPORT AND PRESSURE PLATE, WHEREBY THE PLATE COMPRESSES THE SEAL MEM-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-08 | 1968-06-08 | 1968-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-08 | 1972-06-08 | 1972-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-08 | 1976-06-08 | 1976-12-08 | $7700.00 | Window Closed / Lapsed |