US PATENT SUBCLASS 267 / 217
.~.~ Fluid retarder

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

2  DF  VEHICLE {14}
195  DF  .~ Mechanical spring and nonresilient retarder (e.g., shock absorber) {2}
217.~.~ Fluid retarder {4}
218  DF  .~.~.~> With separate pump or adjustment for spring loading
219  DF  .~.~.~> Elastomeric spring {1}
221  DF  .~.~.~> Helical coil spring {4}
227  DF  .~.~.~> Leaf spring

DEFINITION

Classification: 267/217

Fluid retarder:

(under subclass 195) Spring device wherein the viscosity of a liquid or gas is employed for opposing and slowing the distortion or recovery of the spring element.

SEE OR SEARCH CLASS

16, Miscellaneous Hardware,

51+, and 66+ for a fluid check and spring system for use with a closure (e.g., door).

105, Railway Rolling Stock,

197.05, for a hydraulically-dampened spring bolster for a railway truck.

188, Brakes, 266+, for a fluid retarder with no claimed spring element.

280, Land Vehicles,

124.1+, for a general utility wheeled land vehicle running gear suspension arrangement, especially subclasses 124.145+ or 124.154+ wherein a wheel is separately supported upon an individual stub axle including a vertically extending strut which may or may not include a fluid damper or retarder.