High vacuum capacitance manometer having Px side open housing

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4587851
SERIAL NO

06705570

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Abstract

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A sensor unit for a high vacuum manometer includes a tensioned diaphragm fused on one side to a closed evacuated reference chamber and on the other side to a wall ring of substantially the same diameter as the diaphragm. A removable cap member with a gasket seats against the wall so as to define a pressure receiving chamber bordering the diaphragm. With the cap removed, the surfaces of the diaphragm and ring are all accessible for solvent cleaning and visual inspection, so that the sensor may be repeatedly and reliably decontaminated and the diaphragm restored to its initial characteristics. A method of assembly and cleaning are also shown.

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Patent Owner(s)

Patent OwnerAddress
VACUUM GENERAL INC9577 CHESAPEAKE DRIVE SAN DIEGO CA 92123

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mortberg, Edward 2 Westgate Dr., #207, Woburn, MA 01801 1 17

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