US PATENT SUBCLASS 137 / 38
CONTROL BY CHANGE OF POSITION OR INERTIA OF SYSTEM

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

38CONTROL BY CHANGE OF POSITION OR INERTIA OF SYSTEM {5}
39  DF  .~> With second control
40  DF  .~> Position relative body of water (e.g., marine governors) {2}
43  DF  .~> Vent opening or closing on tipping container
44  DF  .~> By shifting of liquid level
45  DF  .~> By pendulum or swinging member {1}

DEFINITION

Classification: 137/38

(under the class definition) Apparatus wherein a flow of fluid is controlled in response to (1) the shifting of the position of the system as a whole relative to gravitational field or to a body of liquid in which the system exists or (2) the inertia or dislocation of the system as a whole.

(1) Note. Systems which are controlled by overflow pipes or arrangements are excluded from this and indented subclasses and are classified on a basis appropriate to the system claimed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for systems wherein the control is in response to the inertia or position of a speed responsive element (e.g., fly ball governors).

581, for distribution systems comprising a movable tank.

SEE OR SEARCH CLASS

184, Lubrication, 26, for lubricating pumps operated by the vibration of a machine.

220, Receptacles,

203.19+, for a receptacle closure comprising a pressure responsive vent or valve which is also responsive to tilting of the receptacle.

222, Dispensing,

160+, for movably mounted supply containers for dispensers; subclasses 454+ for dispensers which have a trap which is

filled and emptied solely by the tilting motion of the assembly, and subclasses 500+ for dispensers having gravity or inertia operated outlet elements.

364, Electrical Computers and Data Processing Systems,

528.16, for control of fluid level or volume, and subclasses 528.17+ for flow control.

399, Electrophotography,

237+, for liquid developer applied to a latent image within an electrophotos:graphic device.

417, Pumps,

231+, for pumps operated by a vehicle.