US PATENT SUBCLASS 137 / 104
.~.~.~ With trip linkage or snap action

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

87.01  DF  SELF-PROPORTIONING OR CORRELATING SYSTEMS {8}
102  DF  .~ Supply and exhaust type {3}
103  DF  .~.~ Vacuum or suction pulsator type (e.g., milking machine) {2}
104.~.~.~ With trip linkage or snap action

DEFINITION

Classification: 137/104

(under subclass 103) Apparatus which include a snap acting or trip linkage in the control system.

SEE OR SEARCH CLASS

251, Valves and Valve Actuation,

66+, for valves with biased trips, and see the search notes to subclass 66, and subclass 76 for snap action valves, per se, and see the search notes thereto.