US PATENT SUBCLASS 335 / 61
.~.~ With pneumatic delay means (e.g., dashpot, etc.)

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
59  DF  .~ Retarded or delayed type {7}
61.~.~ With pneumatic delay means (e.g., dashpot, etc.)

DEFINITION

Classification: 335/61

(under subclass 59) Subject matter wherein the delay structure comprises pneumatic means such as a dashpot, bellows, suction cup, etc., utilizing air or other gaseous fluids.

SEE OR SEARCH THIS CLASS, SUBCLASS:

29, for automatic circuit interrupters with latch or trip reclosing or resetting means utilizing fluid delay means.

62, for retarded or delayed switches utilizing hydraulic delay means.

240, for electromagnet with associated dashpot delayed armature.

SEE OR SEARCH CLASS

188, Brakes, 266+, for a fluid-resistance brake or dashpot of general utility.

200, Electricity: Circuit Makers and Breakers,

34, for nonmagnetically actuated switches with dashpot

retarding means.

318, Electricity: Motive Power Systems, and

485, for automatic motor control means with dashpot control.

388, Electricity: Motor Control Systems, art collection 921 for motor control systems including time delay means.