US3794069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line break control
Assignee: RES ENG CO
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Filing: 1972-11-20
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Granted: 1974-02-26
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Expires: 1992-11-20
Abstract
Abstract This invention is directed to a system for detecting pressure drops in a flow line, the same being indicative of a line break. Reduced pressure is communicated to one side of a diaphragm. A similar reduction is communicated much more slowly to the other side by virtue of series connected oil reservoirs having an orifice therebetween. The pressure differential on opposite diaphragm sides causes valve closure.
Inventors
- 👤 R Gulick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:13
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2807; G01M3/2815; F; F16; F16K; F16K17/00; F16K17/20; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7759; Y10T137/8593; Y10T137/87265
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
182 words
A system for controlling a line break in a product line, comprising: A. diaphragm housing including chambers on opposite sides of a diaphragm; B. first means for pressure communication between a product line and one of said diaphragm chambers; and C. means for causing a pressure imbalance between said chambers on a break occurring in said line, said imbalance causing means including: 1. time delay means for delaying pressure communication between said product line and the other of said diaphragm chambers, said time delay means including: a. a pair of spaced vessels intermediate said product line and said other diaphragm chamber, b. said vessels being adapted to have relatively inert liquid filling a substantial portion of said vessels, c. first conduit means connecting the liquid-containing portions of said vessels, and d. orifice means positioned in said first conduit means, 2. second conduit means communicating between said product line and the non-liquid containing portion of one of said vessels, and 3. third conduit means communicating between said other of said diaphragm chambers and the non-liquid containing portion of the other of said vessels.
Claim 2
Independent Claim
182 words
A system for controlling a line break in a product line, comprising: A. diaphragm housing including chambers on opposite sides of a diaphragm; B. first means for pressure communication between a product line and one of said diaphragm chambers; and C. means for causing a pressure imbalance between said chambers on a break occurring in said line, said imbalance causing means including: 1. time delay means for delaying pressure communication between said product line and the other of said diaphragm chambers, said time delay means including: a. a pair of spaced vessels intermediate said product line and said other diaphragm chamber, b. said vessels being adapted to have relatively inert liquid filling a substantial portion of said vessels, c. first conduit means connecting the liquid-containing portions of said vessels, and d. orifice means positioned in said first conduit means, 2. second conduit means communicating between said product line and the non-liquid containing portion of one of said vessels, and 3. third conduit means communicating between said other of said diaphragm chambers and the non-liquid containing portion of the other of said vessels.
Claim 3
Dependent Claim
33 words
The system of claim 1 wherein each of said vessels has a portion adapted to receive other fluid other than said relatively inert liquid, said other fluid being isolated from said orifice means.
Claim 4
Dependent Claim
19 words
second conduit means communicating between said product line and the non-liquid containing portion of one of said vessels, and
Claim 5
Dependent Claim
19 words
second conduit means communicating between said product line and the non-liquid containing portion of one of said vessels, and
Claim 6
Dependent Claim
22 words
third conduit means communicating between said other of said diaphragm chambers and the non-liquid containing portion of the other of said vessels.
Claim 7
Dependent Claim
22 words
third conduit means communicating between said other of said diaphragm chambers and the non-liquid containing portion of the other of said vessels.
Claim 8
Dependent Claim
25 words
The system of claim 1, wherein said orifice means includes means for selectively positioning, in said first conduit means, a plurality of differently sized orifices.
Claim 9
Dependent Claim
33 words
The system of claim 1, wherein said first conduit means includes a line parallel to said orifice means, said parallel line having therein means for adjustably controlling liquid flow through said parallel line.
Claim 10
Dependent Claim
52 words
The system of claim 1 wherein said first conduit means includes a) means for selectively positioning therein one of a plurality of differently sized orifices, and b) a further liquid passing line parallel to said orifice means, said parallel line having therein means for adjustably controlling liquid flow through said parallel line.
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |