US3269735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure sealing device
Assignee: Atomic Energy of Canada Ltd AECL
•
Filing: 1964-11-16
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Granted: 1966-08-30
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Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Stanley J Whittaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:56
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/14; F16J15/06; F16J15/08; F16J15/0806; F16J15/10; F16J15/12; F16J15/121; F16J15/16; F16J15/164; Y; Y10; Y10S; Y10S277/00; Y10S277/931; Y10S277/932
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A SEALING DEVICE COMPRISING A BODY MEMBER COMPOSED OF MATERIAL HAVING A LOW COEFFICIENT OF THERMAL EXPANSION, SAID BODY MEMBER HAVING A FLAT SEAL-APPLYING SURFACE LYING IN A SINGLE PLANE AND A RECESS IN SAID SURFACE, AND A BODY OF DUCTILE SEAL MATERIAL HAVING A HIGH COEFFICIENT OF THERMAL EXPANSION SEATED IN SAID RECESS AND BEING NORMALLY DISPOSED SUBSTANTIALLY WHOLLY WITHIN SAID RECESS, SAID DUCTILE SEAL BODY BEING EXPANSIBLE TO EXTRUDE A PORTION THEREOF OUTWARDLY BEYOND THE PLANE OF SAID SURFACE ON APPLICATION OF A PREDETERMINED DEGREE OF HEAT THERETO AND A HEATING DEVICE MOUNTED ON SAID BODY MEMBER FOR APPLYING SAID PREDETERMINED DEGREE OF HEAT THERETO.
Claim 2
Dependent Claim
107 words
A SEALING DEVICE COMPRISING A BODY MEMBER COMPOSED OF MATERIAL HAVING A LOW COEFFICIENT OF THERMAL EXPANSION, SAID BODY MEMBER HAVING A FLAT SEAL-APPLYING SURFACE LYING IN A SINGLE PLANE AND A RECESS IN SAID SURFACE, AND A BODY OF DUCTILE SEAL MATERIAL HAVING A HIGH COEFFICIENT OF THERMAL EXPANSION SEATED IN SAID RECESS AND BEING NORMALLY DISPOSED SUBSTANTIALLY WHOLLY WITHIN SAID RECESS, SAID DUCTILE SEAL BODY BEING EXPANSIBLE TO EXTRUDE A PORTION THEREOF OUTWARDLY BEYOND THE PLANE OF SAID SURFACE ON APPLICATION OF A PREDETERMINED DEGREE OF HEAT THERETO AND A HEATING DEVICE MOUNTED ON SAID BODY MEMBER FOR APPLYING SAID PREDETERMINED DEGREE OF HEAT THERETO.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |