US3217507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration method and apparatus
Assignee: Associated Testing Laboratories Inc
•
Filing: 1963-06-18
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Granted: 1965-11-16
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Expires: 1983-06-18
Abstract
No abstract record available.
Inventors
- 👤 John E Stryker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:06
CPC Classifications
F; F25; F25D; F25D31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A FREEZE DRYER, A CONDENSER SURFACE SHAPED TO AT LEAST PARTIALLY DEFINE A RECEPTACLE, MEANS FOR EXPANDING A LIQUID REFRIGERANT INTO SAID RECEPTACLE TO FORM A SUBLIMABLE SOLID PHASE COMPONENT THEREOF THEREIN, VALVE MEANS DISPOOSED INTERMEDIATE A SOURCE OF SAID LIQUID REFRIGERANT AND SAID RECEPTACLE TO CONTROL THE FLOW THEREOF AND MEANS ASSOCIATED WITH SAID RECEPTACLE AND INCLUDING A MOVABLE MEMBER POSITIONABLY RESPONSIVE TO THE QUANTITY OF SAID SOLID PHASE COMPONENT OF SAID REFRIGERANT DISPOSED IN SAID RECEPTACLE FOR ACTUATING SAID VALVE MEANS TO CONTROL THE FLOW OF SAID LIQUID PHASE REFRIGERANT FROM SAID SOURCE THEREOF TO SAID RECEPTACLE.
Claim 2
Dependent Claim
100 words
IN A FREEZE DRYER, A CONDENSER SURFACE SHAPED TO AT LEAST PARTIALLY DEFINE A RECEPTACLE, MEANS FOR EXPANDING A LIQUID REFRIGERANT INTO SAID RECEPTACLE TO FORM A SUBLIMABLE SOLID PHASE COMPONENT THEREOF THEREIN, VALVE MEANS DISPOOSED INTERMEDIATE A SOURCE OF SAID LIQUID REFRIGERANT AND SAID RECEPTACLE TO CONTROL THE FLOW THEREOF AND MEANS ASSOCIATED WITH SAID RECEPTACLE AND INCLUDING A MOVABLE MEMBER POSITIONABLY RESPONSIVE TO THE QUANTITY OF SAID SOLID PHASE COMPONENT OF SAID REFRIGERANT DISPOSED IN SAID RECEPTACLE FOR ACTUATING SAID VALVE MEANS TO CONTROL THE FLOW OF SAID LIQUID PHASE REFRIGERANT FROM SAID SOURCE THEREOF TO SAID RECEPTACLE.
References Cited (Backward Citations)
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Cited
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Cited
US2435854A
Cited
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Cited
US2951351A
Cited
US3114247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |