US PATENT SUBCLASS 137 / 44
.~ By shifting of liquid level
Current as of:
June, 1999
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137 /
HD
FLUID HANDLING
38
DF
CONTROL BY CHANGE OF POSITION OR INERTIA OF SYSTEM
{5}
44
.~ By shifting of liquid level
DEFINITION
Classification: 137/44
(under subclass 38) Apparatus wherein the control is effected by a change in a level of a liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
40+, where the control is in response to a change or shift in the level of a body of water in which the system is located relative to the system.
45, for similar devices in which a liquid is employed as a shifting weight in combination with a pendulum or swinging member.
386+, for liquid level responsive systems which are not inertia controlled.
