Measuring and testing – Sampler – sample handling – etc. – Withdrawing through conduit or receptacle wall
Patent
1998-07-14
1999-05-18
Raevis, Robert
Measuring and testing
Sampler, sample handling, etc.
Withdrawing through conduit or receptacle wall
G01N1/00
Patent
active
059052139
ABSTRACT:
A sampling apparatus is characterized by a sampler housing coupled to a movable valve of a connecting device. The housing and the movable valve have bores that are in communication and axial alignment. One end of the valve bore communicates with the interior of a liquid containing vessel. A plunger is in the housing bore and has an annular recess intermediate its ends. The plunger is reciprocated in the housing and valve bores to project the recess into the vessel to receive a sample of liquid therein, and to then retract the recess from the vessel and through the valve and housing bores to a sample collection point in the housing. Plunger seals maintain a liquid seal between the vessel interior and the sample collection point in the housing during reciprocation of the plunger. The valve is movable between an operative position where the one end of its bore communicates with the vessel interior and an inoperative position where the one end of its bore is out of communication with the vessel interior. Movement of the valve to the inoperative position enables the sampler housing to be disconnected from the valve for maintenance, repair or replacement without allowing liquid to escape from the vessel through the valve bore.
REFERENCES:
patent: 3007340 (1961-11-01), Kraftson
patent: 4147062 (1979-04-01), Jaeger
patent: 4262533 (1981-04-01), Jaeger
patent: 4472977 (1984-09-01), Lynn
patent: 4475410 (1984-10-01), Jaeger
patent: 4628732 (1986-12-01), Makinen
patent: 4744255 (1988-05-01), Jaeger
patent: 4852412 (1989-08-01), Hill
patent: 5747708 (1998-05-01), Weiberth
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