Vanishing chamber construction for liquid sampler

Details Vanishing chamber construction for liquid sampler Vanishing chamber construction for liquid sampler

1988-06-27

1989-06-27

Levy, Stewart J.

Measuring and testing

Sampler, sample handling, etc.

Withdrawing through conduit or receptacle wall

G01N 114

Patent

active

048417858

ABSTRACT:
In a vanishing chamber pump mechanism, an improved apparatus is set forth. The preferred embodiment incorporates a resilient plug adapted to work opposite an anvil which relatively reciprocates to pump sample trapped in the hemispherical chamber within said resilient plug. The improved version incorporates a metallic insert axially centered in the hemispherical cavity, and it is anchored in place by an enlarged root extending into the body which is intervally cast around the insert.

REFERENCES:
patent: 4403518 (1983-09-01), Welker
patent: 4440032 (1984-04-01), Welker
patent: 4562749 (1986-01-01), Clark

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