US PATENT SUBCLASS 73 / 732
.~ Bourdon

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

700  DF  FLUID PRESSURE GAUGE {20}
732.~ Bourdon {7}
733  DF  .~.~> With electrical readout {2}
736  DF  .~.~> Multiple and/or differential
737  DF  .~.~> Intermediately supported
738  DF  .~.~> Safety pressure release casing
739  DF  .~.~> With mechanism dampening
740  DF  .~.~> With zeroizing adjustment
741  DF  .~.~> Bourdon tube and mounting {2}

DEFINITION

Classification: 73/732

Bourdon:

(under subclass 700) Subject matter wherein the pressure sensitive element comprises a thin-walled hollow member of elastic material bent into a curved configuration or twisted

wherein an increase or decrease of pressure inside the element tends to straighten it.