US3213795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid handling system
Assignee: Smith and Loveless Inc
•
Filing: 1963-07-31
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Granted: 1965-10-26
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Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 John W Parks
- 👤 Francis R Wagy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/06; G05D7/0617; G05D7/0629; G05D7/0676; E; E03; E03F; E03F5/00; E03F5/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A SYSTEM FOR PRODUCING A CONTROL SIGNAL PROPORTIONAL TO THE FLOW OF A FLUID COMPRISING: (A) MEANS PRODUCING GAS PRESSURE PROPORTIONAL TO THE FLOW OF SAID FLUID, (B) MEANS PRODUCING A CONTROL SIGNAL PROPORTIONAL TO SAID GAS PRESSURE, AND (C) GAS CONDUIT MEANS CONNECTING SAID PRESSURE PROPRODUCING MEANS TO SAID CONTROL SIGNAL PRODUCING MEANS PERMITTING GAS TO FLOW FROM SAID PRESSURE PRODUCING MEANS DOWNSTREAM TO SAID SIGNAL PRODUCING MEANS; THE IMPROVEMENT IN MEANS FOR PREVENTING THE GAS PRESSURE REACHING SAID SIGNAL PRODUCING MEANS FROM EXCEEDING A PREDETERMINED VALUE, COMPRISING: (1) VALVE MEANS SENSING DOWNSTREAM PRESSURE IN SAID GAS CONDUIT MEANS AND THROTTLING TO CLOSE SAID CONDUIT MEANS WHEN SAID DOWNSTREAM PRESSURE REACHES SAID PREDETERMINED VALUE, AND (2) MEANS CONTINUOUSLY DISSIPATING PRESSURE IN SAID CONDUIT MEANS BETWEEN SAID SIGNAL PRODUCING MEANS AND SAID VALVE MEANS WHEN SAID DOWNSTREAM PRESSURE REACHES SAID PREDETERMINED VALUE.
Claim 2
Dependent Claim
143 words
IN A SYSTEM FOR PRODUCING A CONTROL SIGNAL PROPORTIONAL TO THE FLOW OF A FLUID COMPRISING: (A) MEANS PRODUCING GAS PRESSURE PROPORTIONAL TO THE FLOW OF SAID FLUID, (B) MEANS PRODUCING A CONTROL SIGNAL PROPORTIONAL TO SAID GAS PRESSURE, AND (C) GAS CONDUIT MEANS CONNECTING SAID PRESSURE PROPRODUCING MEANS TO SAID CONTROL SIGNAL PRODUCING MEANS PERMITTING GAS TO FLOW FROM SAID PRESSURE PRODUCING MEANS DOWNSTREAM TO SAID SIGNAL PRODUCING MEANS; THE IMPROVEMENT IN MEANS FOR PREVENTING THE GAS PRESSURE REACHING SAID SIGNAL PRODUCING MEANS FROM EXCEEDING A PREDETERMINED VALUE, COMPRISING: (1) VALVE MEANS SENSING DOWNSTREAM PRESSURE IN SAID GAS CONDUIT MEANS AND THROTTLING TO CLOSE SAID CONDUIT MEANS WHEN SAID DOWNSTREAM PRESSURE REACHES SAID PREDETERMINED VALUE, AND (2) MEANS CONTINUOUSLY DISSIPATING PRESSURE IN SAID CONDUIT MEANS BETWEEN SAID SIGNAL PRODUCING MEANS AND SAID VALVE MEANS WHEN SAID DOWNSTREAM PRESSURE REACHES SAID PREDETERMINED VALUE.
References Cited (Backward Citations)
US2380459A
Cited
US3021789A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |