Valve self-relieving seats

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4434967
SERIAL NO

06410304

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A gate valve having an inlet and an outlet flow-way with a chamber having a gate inbetween and with counterbores at the end of the flow way adjacent the chamber is disclosed. Each counterbore telescopically receives a seat member. A sealing system for each of the gate seat members which permit certain liquid communication to the valve body cavity is disclosed. Each seal system includes seals on all sides of the gate seat member except the inwardly facing cylindrical walls. Each seal is disposed on an annular groove cut in the outer periphery surface of the end of the gate seat member. The seal on the upstream side of the valve body is located adjacent to the inwardly facing cylindrical wall. The seal between the gate seat and the gate is located near the valve body cavity. The seal on the outwardly facing cylindrical wall is adjacent to the valve body flow-way counterbores.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
AXELSON INC A CORP OF DELNot Provided

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Vanderburg, Ralph W Longview, TX 4 48

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