US3938544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve with heat transport monitor for leakage determining rate
Assignee: Individual
•
Filing: 1974-05-28
•
Granted: 1976-02-17
•
Expires: 1994-05-28
Abstract
Abstract A valve having means for measuring leakage through the valve. The valve body has a small heater in the leakage flow path downstream of the upstream seal and a heat sensor upstream of the downstream seal in the leakage path; fluid that leaks past the upstream seal is heated and its presence detected by the heat sensor which then indicates the fact that the valve is leaking.
Inventors
- 👤 Henry J. Bernaerts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:02
CPC Classifications
F; F16; F16K; F16K49/00; F16K49/002; F16K37/00; F16K5/00; G; G01; G01M; G01M3/00; G01M3/002; G01M3/02; G01M3/04; G01M3/16; G01M3/18; G01M3/184; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/8158
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
A valve comprising: a body; a closure element within said body; sealing members between said valve body and said closure element; and means within said valve body for determining the leakage of the fluid of the main fluid flow controlled by said valve, between said closure element and said sealing members.
Claim 2
Dependent Claim
51 words
A valve comprising: a body; a closure element within said body; sealing members between said valve body and said closure element; and means within said valve body for determining the leakage of the fluid of the main fluid flow controlled by said valve, between said closure element and said sealing members.
Claim 3
Dependent Claim
24 words
A valve as in claim 1 wherein said means for determining said leakage includes means within said valve body for heating said leakage fluid.
Claim 4
Dependent Claim
20 words
A valve as in claim 2 including means within said valve body for determining the temperature of said leakage fluid.
Claim 5
Dependent Claim
18 words
A valve as in claim 3 wherein said means for heating said leakage comprises an electric resistance heater.
Claim 6
Dependent Claim
19 words
A valve as in claim 4 wherein said means for determining the temperature of said leakage comprises a thermocouple.
References Cited (Backward Citations)
US2430122A
Cited
US2646065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |