Tandem sampler actuation device

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United States of America Patent

PATENT NO 4799389
SERIAL NO

07016335

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A triggering device for actuating a plurality of serially coupled fluid samplers disposed in a borehole includes a housing having a pair of pistons, each coupled to opposing valves in the tandem fluid samplers. The pistons are locked apart by locking bearing urged against the housing by one of the pistons. Closing of the valve in the upper sampler drives one piston releasing the locking bearing and allowing the other piston to move upwards, thus actuating the lower sampler.

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Patent Owner(s)

Patent OwnerAddress
MEESPIERSON N V445 PARK AVENUE NEW YORK NY 10022

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gruber, Norman G Halifax, CA 2 16
Krauss, Owen T Dartmouth, CA 2 16

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