US PATENT SUBCLASS 251 / 284
LIMIT STOP


Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

284LIMIT STOP {2}
285  DF  .~> Adjustable
286  DF  .~> Rotary valve {2}


DEFINITION

Classification: 251/284

(under the class definition) Subject matter wherein means is provided with which the valve or valve actuator comes into contact to arrest its motion, the means being in the nature of an abutment or stop.

(1) Note. The mounting and actuation means of the valve must be such that the motion controlled could be continued at least to some extent in the absence of the stop.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42, for adjustable opening limit means for a valve having a choked pressure type servo-motor actuator.

60, for adjustable stops for fluid pressure actuated valves.

89+, for means for blocking or holding the actuator at some desired point or points, this means preventing motion in either direction, and see the search notes thereto.

129.12, for limit control means for electrically actuated valves.