US PATENT SUBCLASS 137 / 101-- .~.~.~ Flow dividers (e.g., reversely acting controls)

US PATENT SUBCLASS 137 / 101
.~.~.~ Flow dividers (e.g., reversely acting controls)

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

87.01	DF	SELF-PROPORTIONING OR CORRELATING SYSTEMS {8}
98	DF	.~ Self-proportioning flow systems {5}
100	DF	.~.~ Flow comparison or differential response {3}
101		.~.~.~ Flow dividers (e.g., reversely acting controls)

DEFINITION

Classification: 137/101

(under subclass 100) Systems in which a flow is divided into a plurality of flow paths and the ratio between the flow in each branch maintained in response to means sensing differences in flow or pressure in each branch by throttling one branch an amount equal to the amount the other branch is opened.

(1) Note. Many of the patents in this subclass are for systems in which a single pressure fluid is employed to supply a plurality of fluid pressure motors with means to automatically maintain the amounts of fluid fed to each motor

proportional.

SEE OR SEARCH CLASS

60, Power Plants,

420+, for automatic control of a plurality of fluid motors.

91, Motors: Expansible Chamber Type, appropriate subclasses and especially 165+, and 508+ for automatic control of a plurality of expansible chamber motors.