Multiple piston assembly for safety valve

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9631456
SERIAL NO

14390688

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A safety valve includes a housing defining first and secondary piston bores in fluid communication with each other via a port. A first piston is movably arranged within the first piston bore and has a first piston rod extending longitudinally from the first piston and coupled to a flow tube. A second piston is movably arranged within the secondary piston bore and has a secondary piston rod extending longitudinally from the second piston and axially engageable with the flow tube. Hydraulic fluid pressure acts on the first piston until the first piston axially moves and exposes the port, whereby the hydraulic fluid pressure is then able to enter the secondary piston bore and also act on the second piston.

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First Claim

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Patent Owner(s)

  • HALLIBURTON ENERGY SERVICES, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Scott, Bruce Edward McKinney, US 37 217
Vick,, Jr James Dan Dallas, US 62 331

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