Dog locking sleeve

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4412559
SERIAL NO

06396990

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A retrievable plug having a dog locking sleeve which has extensions thereon to increase the effective axial length thereof to eliminate binding of the dog locking sleeve within the plug mandrel during actuation of the plug body for the removal of the plug body from the member in which it is installed.

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First Claim

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Family

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Patent Owner(s)

Patent OwnerAddress
CONTINENTAL EMSCO COMPANY7600 SOUTH SANTE FE HOUSTON TX 77061 ATTN LARRY SPALDING

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nickles, R Benton Duncan, OK 3 11
Streich, Steven G Duncan, OK 45 2141
Treece, Harold O Duncan, OK 8 131

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