US PATENT SUBCLASS 188 / 275
.~ With fluid regulated in response to inertia of valve member


Current as of: June, 1999
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188 /   HD   BRAKES

266  DF  INTERNAL-RESISTANCE MOTION RETARDER {29}
275.~ With fluid regulated in response to inertia of valve member


DEFINITION

Classification: 188/275

(under subclass 266) Device wherein the first member causes flow of a fluid medium through a passage for said fluid, said passage having an element that is movable to close or modify the size of the passage, thereby variably restricting flow of fluid through said passage, said element being sluggish in its movement by reason of a reluctance to be disturbed that exists in the element or a weight connected thereto; whereby motion of said member is restrained not only by reluctance to be disturbed that exists in the fluid itself, but also restrained by restriction to fluid flow caused by reluctance to be disturbed that exists in the element.

(1) Note. Examples of devices found in this subclass include: a shock absorber wherein amplitude or frequency of movement to be retarded causes operation of a valve in the shock absorber by reason of inertia in the valve, and a shock absorber on a vehicle wherein change in direction of the vehicle causes an inertia valve on the shock absorber to change the retarding effort of the shock absorber.