US3353550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling flow and proportioning liquids
Assignee: Chemetron Fire Systems Inc
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Filing: 1963-10-21
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Granted: 1967-11-21
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Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 Hilding V Williamson
- 👤 Eduard J Job
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:54
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/80; B01F35/83; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2572
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A FLOW CONTROL DEVICE FOR USE IN A FLOW SYSTEM, SAID FLOW CONTROL DEVICE INCLUDING A HOUSING HAVING A PASSAGE, FLOW-RESPONSIVE MEANS DISPOSED IN SAID PASSAGE FOR RESPONDING TO A CHANGE IN FLUID MEDIUM FLOW, SAID FLOW-RESPONSIVE MEANS INCLUDING A FLOW-RESPONSIVE ELEMENT, FLUID BLEED VALVE FOR SELECTIVELY BLEEDING GASEOUS FLUID INTO SAID PASSAGE, AND MEANS RESPONSIVE TO SAID FLOW-RESPONSIVE ELEMENT AFTER SUFFICIENT MOVEMENT OF SAID FLOW-RESPONSIVE ELEMENT FOR OPERATING SAID BLEED VALVE TO LIMIT THE FLUID MEDIUM FLOW TO A PRESELECTED LEVEL, SAID OPERATING MEANS INCLUDING A LOST-MOTION CONNECTION ADAPTED AND ARRANGED SO THAT THE SUCTION IN SAID PASSAGE IS LIMITED TO CONSEQUENTLY LIMIT FLUID MEDIUM FLOW.
Claim 2
Dependent Claim
107 words
A FLOW CONTROL DEVICE FOR USE IN A FLOW SYSTEM, SAID FLOW CONTROL DEVICE INCLUDING A HOUSING HAVING A PASSAGE, FLOW-RESPONSIVE MEANS DISPOSED IN SAID PASSAGE FOR RESPONDING TO A CHANGE IN FLUID MEDIUM FLOW, SAID FLOW-RESPONSIVE MEANS INCLUDING A FLOW-RESPONSIVE ELEMENT, FLUID BLEED VALVE FOR SELECTIVELY BLEEDING GASEOUS FLUID INTO SAID PASSAGE, AND MEANS RESPONSIVE TO SAID FLOW-RESPONSIVE ELEMENT AFTER SUFFICIENT MOVEMENT OF SAID FLOW-RESPONSIVE ELEMENT FOR OPERATING SAID BLEED VALVE TO LIMIT THE FLUID MEDIUM FLOW TO A PRESELECTED LEVEL, SAID OPERATING MEANS INCLUDING A LOST-MOTION CONNECTION ADAPTED AND ARRANGED SO THAT THE SUCTION IN SAID PASSAGE IS LIMITED TO CONSEQUENTLY LIMIT FLUID MEDIUM FLOW.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |