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1.
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PRESSURE RELIEF VALVE ASSEMBLY INCLUDING SERIES COUPLED VALVES AND RELATED METHODS
| Application Number |
18786377 |
| Status |
Pending |
| Filing Date |
2024-07-26 |
| First Publication Date |
2024-11-21 |
| Owner |
PREVCO Subsea LLC (USA)
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| Inventor |
- Head, John
- French, James
- Christensen, Don
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Abstract
A pressure relief valve (PRV) assembly may include a housing having an opening therein, an interior cavity, a passageway extending between the opening and the interior cavity, and a flange extending within the passageway adjacent the opening. The PRV assembly may also include a first stage valve carried within the interior cavity, and a second stage valve fluidly coupled in series with the first stage valve. The second stage valve may include an enlarged head carried within the opening and a shaft extending from the enlarged head through the passageway to the interior cavity. The shaft may have a proximal end coupled to the enlarged head and an opposing enlarged distal end adjacent the interior cavity. A biasing member may be between the enlarged distal end and the flange. The biasing member may be configured to bias the first and second stage valves to a closed position.
IPC Classes ?
- F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
- F16K 15/06 - Check valves with guided rigid valve members with guided stems
- F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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2.
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Dual poppet pressure relief valve with vacuum adaptor capability
| Application Number |
18202882 |
| Grant Number |
12085181 |
| Status |
In Force |
| Filing Date |
2023-05-26 |
| First Publication Date |
2023-09-21 |
| Grant Date |
2024-09-10 |
| Owner |
PREVCO Subsea, LLC (USA)
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| Inventor |
- Christensen, Don
- Head, John
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Abstract
A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.
IPC Classes ?
- F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
- F16K 15/06 - Check valves with guided rigid valve members with guided stems
- F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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3.
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Dual poppet pressure relief valve with vacuum adaptor capability
| Application Number |
17900204 |
| Grant Number |
11703139 |
| Status |
In Force |
| Filing Date |
2022-08-31 |
| First Publication Date |
2022-12-29 |
| Grant Date |
2023-07-18 |
| Owner |
PREVCO Subsea LLC (USA)
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| Inventor |
- Christensen, Don
- Head, John
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Abstract
A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.
IPC Classes ?
- F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
- F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
- F16K 15/06 - Check valves with guided rigid valve members with guided stems
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4.
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Dual poppet pressure relief valve with vacuum adaptor capability
| Application Number |
16744133 |
| Grant Number |
11473685 |
| Status |
In Force |
| Filing Date |
2020-01-15 |
| First Publication Date |
2020-07-16 |
| Grant Date |
2022-10-18 |
| Owner |
PREVCO SUBSEA LLC (USA)
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| Inventor |
- Christensen, Don
- Head, John
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Abstract
A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.
IPC Classes ?
- F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
- F16K 17/06 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K 17/10 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
- F16K 15/06 - Check valves with guided rigid valve members with guided stems
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5.
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SYSTEMS AND METHODS FOR PROVIDING A SLEEVE REINFORCED SUBSEA PRESSURE VESSEL
| Application Number |
US2019027984 |
| Publication Number |
2019/204517 |
| Status |
In Force |
| Filing Date |
2019-04-17 |
| Publication Date |
2019-10-24 |
| Owner |
PREVCO SUBSEA LLC (USA)
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| Inventor |
- Christensen, Don
- Head, John
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Abstract
A subsea vessel includes an outer layer of non-corrosive material and an inner layer of high-strength material that both corroborate in a subsea environment to withstand external pressure and prevent corrosion. The subsea vessel further includes a cavity surrounded by the inner layer and outer layer for providing storage in and protection from the subsea environment. The cavity is accessible via an opening that extends through the inner layer and the outer layer. The opening can be opened and closed with a cooperating cap that impermeably seals the cavity. The cap may include a number or connection mechanisms for being selectively secured to the opening. In addition, the cap may include a portion formed of a high-strength material and a portion formed of a non-corrosive material.
IPC Classes ?
- F17C 3/00 - Vessels not under pressure
- F17C 1/00 - Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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6.
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High reliability pressure relief valve
| Application Number |
14248271 |
| Grant Number |
09732868 |
| Status |
In Force |
| Filing Date |
2014-04-08 |
| First Publication Date |
2014-12-11 |
| Grant Date |
2017-08-15 |
| Owner |
PREVCO SUBSEA, LLC (USA)
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| Inventor |
- Bertoldi, John
- Schimek, Iii, Joseph
- Head, John
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Abstract
A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.
IPC Classes ?
- F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
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7.
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HIGH RELIABILITY PRESSURE RELIEF VALVE
| Application Number |
US2014033392 |
| Publication Number |
2014/197118 |
| Status |
In Force |
| Filing Date |
2014-04-08 |
| Publication Date |
2014-12-11 |
| Owner |
PREVCO SUBSEA, LLC (USA)
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| Inventor |
- Bertoldi, John
- Schimek, Iii, Joseph
- Head, John
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Abstract
A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.
IPC Classes ?
- F16L 37/28 - Couplings of the quick-acting type with fluid cut-off means
- F16K 1/42 - Valve seats
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8.
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PREVCO
| Serial Number |
77348321 |
| Status |
Registered |
| Filing Date |
2007-12-10 |
| Registration Date |
2009-11-17 |
| Owner |
PREVCO SUBSEA LLC ()
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| NICE Classes ? |
- 06 - Common metals and ores; objects made of metal
- 07 - Machines and machine tools
- 20 - Furniture and decorative products
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Goods & Services
METAL HOUSING FOR SUBMERSIBLE INSTRUMENTATION, NAMELY, HOUSING FOR ELECTRICAL APPARATUSES, INDUSTRIAL APPARATUSES, PERSONAL EFFECTS AND WIRED JUNCTION CONNECTIONS Vacuum pumps PLASTIC HOUSING CONTAINERS FOR SUBMERSIBLE INSTRUMENTATION, NAMELY, HOUSING FOR ELECTRICAL APPARATUSES, INDUSTRIAL APPARATUSES, PERSONAL EFFECTS AND WIRED JUNCTION CONNECTIONS
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