Patent US1475692A successfully refreshed from Google Patents.
US4294113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-surge system for gases and other media
Assignee: BAY STATE/STERLING Inc
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Filing: 1980-02-04
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Granted: 1981-10-13
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Expires: 2000-02-04
Abstract
Abstract A device and method for preventing high pressure surges in fluidic material delivery systems to instruments such as a flowmeter, by the use of restrictors and a pilot operated valve to initially restrict the flow of the fluidic material before allowing total delivery thereof to prevent damage to such meters and other type members.
Inventors
- 👤 Kenneth J. Sprott
- 👤 George M. Herterick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:06
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
73 words
A device for preventing high pressure surges in fluidic material delivery systems to metering and measuring instruments comprising means for flowing the fluidic material to a normally closed pilot operated valve, means for diverting flow therefrom through a restrictor directly to said instruments, means for diverting flow therefrom through a restrictor to the pilot of the pilot valve to produce a time delay in total delivery of the fluidic material to the instruments.
Claim 2
Independent Claim
73 words
A device for preventing high pressure surges in fluidic material delivery systems to metering and measuring instruments comprising means for flowing the fluidic material to a normally closed pilot operated valve, means for diverting flow therefrom through a restrictor directly to said instruments, means for diverting flow therefrom through a restrictor to the pilot of the pilot valve to produce a time delay in total delivery of the fluidic material to the instruments.
Claim 3
Dependent Claim
19 words
The device of claim 1, in which the fluidic material flows to the pilot valve through a solenoid valve.
Claim 4
Dependent Claim
15 words
The device of claim 1, in which the metering and measuring instrument include a flowmeter.
Claim 5
Dependent Claim
17 words
The device of claim 1, in which all of said means are part of a unitary structure.
Claim 6
Independent Claim
68 words
A method for preventing high pressure surges in fluidic material delivery systems to metering and measuring instruments comprising flowing the fluidic material to a normally closed pilot operated valve, diverting flow therefrom through a restrictor directly to said instruments, further diverting flow therefrom through a restrictor to the pilot of the pilot valve to produce a time delay in total delivery of the fluidic material to the instruments.
Claim 7
Independent Claim
68 words
A method for preventing high pressure surges in fluidic material delivery systems to metering and measuring instruments comprising flowing the fluidic material to a normally closed pilot operated valve, diverting flow therefrom through a restrictor directly to said instruments, further diverting flow therefrom through a restrictor to the pilot of the pilot valve to produce a time delay in total delivery of the fluidic material to the instruments.
Claim 8
Dependent Claim
15 words
The method of claim 5, in which the metering and measuring instruments include a flowmeter.
Claim 9
Dependent Claim
23 words
The device of claim 5, in which all of said flow to the metering and measuring instruments takes place through a unitary structure.
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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |