Bellow pump for gas test tube

Details Bellow pump for gas test tube Bellow pump for gas test tube

1989-04-26

1990-08-14

Noland, Tom

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386384, 7386386, G01N 114

Patent

active

049476963

ABSTRACT:
A pump for gas test tubes comprising two handle plates interconnected at respective ends by bellows and which are spring-biased in the direction of a suction sampling stroke. An inlet valve is constructed for the space enclosed in the bellows to insure that only non-manipulatable suction strokes with an exactly defined volume can be executed. For this purpose the inlet valve is arranged in the intake duct between the gas test tube and the interior of the bellows and closes in the direction toward the interior of the bellows. It can be opened by actuating the handle plates for the initiation of a complete sampling stroke and it remains open during the sampling stroke.

REFERENCES:
patent: 3446600 (1969-05-01), Wachter et al.
patent: 3759106 (1973-09-01), Wachter et al.
patent: 3782198 (1974-01-01), Wachter et al.
patent: 3861217 (1975-01-01), Rabenecker et al.
patent: 3901084 (1975-08-01), Breilsford
patent: 4574647 (1986-03-01), Molt
patent: 4610171 (1986-09-01), Nason

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