Patent US3754566A successfully refreshed from Google Patents.
US3754566A
Expired / Lapsed
US
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Safety valve
Assignee: Brevets Pour L Ind & La Marine
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Filing: 1971-04-12
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Granted: 1973-08-28
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Expires: 1991-04-12
Abstract
Abstract A safety system for a pressure fluid container has a blow-off valve to provide communication between the interior of the container and the atmosphere, a hydraulic ram controlling the blow-off valve, a hydraulic pressure feed circuit for the ram which is connected to the interior of the container through a buffer capacity, and pressure sensing means in which the pressure in the container acts in opposition to spring loading to control pilot valve means, so that when the container pressure rises above a predetermined value, pressure is reduced in the hydraulic pressure feed circuit to the ram, allowing the blow-off valve to open.
Inventors
- 👤 F Gemigniani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:32
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/22; B65D90/32; B65D90/34; F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/10; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A safety system for a pressure fluid container comprising in combination, a blow-off valve to provide communication between the interior of the container and the atmosphere, a hydraulic ram controlling the blow off valve, a hydraulic pressure feed circuit for the ram which is connected to the interior of the container through a buffer capacity, pressure sensing means in which the pressure in the container acts in opposition to spring loading to control pilot valve means so that when the container pressure rises above a predetermined value, pressure is reduced in the hydraulic pressure feed circuit of the ram, allowing the blow-off valve to open, and valves which when closed isolate the pressure sensing means from the buffer capacity.
Claim 2
Dependent Claim
119 words
A safety system for a pressure fluid container comprising in combination, a blow-off valve to provide communication between the interior of the container and the atmosphere, a hydraulic ram controlling the blow off valve, a hydraulic pressure feed circuit for the ram which is connected to the interior of the container through a buffer capacity, pressure sensing means in which the pressure in the container acts in opposition to spring loading to control pilot valve means so that when the container pressure rises above a predetermined value, pressure is reduced in the hydraulic pressure feed circuit of the ram, allowing the blow-off valve to open, and valves which when closed isolate the pressure sensing means from the buffer capacity.
Claim 3
Dependent Claim
26 words
A safety system as claimed in claim 1, wherein the pilot valve means communicate with the hydraulic feed circuit between said buffer capacity and the ram.
Claim 4
Dependent Claim
29 words
A safety system as claimed in claim 1, wherein the hydraulic feed circuit of the ram includes a remote control valve interposed between the buffer capacity and the ram.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |