US PATENT SUBCLASS 337 / 117
.~.~.~ Utilizing diaphragm or bellows means

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
114  DF  .~ Expansible or vaporizable fluid-actuated (e.g., mercury vapor) {5}
115  DF  .~.~ With manual or other mechanical contact actuating means {3}
117.~.~.~ Utilizing diaphragm or bellows means

DEFINITION

Classification: 337/117

(under subclass 115) Subject matter including specific details of at least one expansible bellows or diaphragm device whereby a thrust force is transmitted to a contact control means upon a change of state or dimension of the actuating fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

320+, for similar devices utilizing thermally actuated fluid means.

SEE OR SEARCH CLASS

73, Measuring and Testing,

715+, especially subclass 729, for fluid pressure gauges utilizing diaphragm or bellows structure.

74, Machine Element or Mechanism, 17.8, for devices for the transfer of motion through a flexible seal or diaphragm and subclasses 18+ for devices where the motion transfer takes place through a moving rod or casing.

91, Motors: Expansible Chamber Type, appropriate subclasses for expansible chamber motors with diaphragm or bellows.

92, Expansible Chamber Devices, appropriate subclasses, especially

34+, for bellows structure.

200, Electricity: Circuit Makers and Breakers,

83, for fluid pressure actuated switches with diaphragm.

381, Electrical Audio Signal Processing Systems and Devices,

355+, for telephone type transmitters with diaphragm and subclasses 176, 186, and 398+ for diaphragm structure, per se.