US PATENT SUBCLASS 267 / 256
.~.~ Fluid spring


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

2  DF  VEHICLE {14}
228  DF  .~ Lever and nontorsion spring {4}
256.~.~ Fluid spring


DEFINITION

Classification: 267/256

Fluid spring:

(under subclass 228) Spring device which utilizes a compressible fluid to resiliently cushion the vehicle parts, wherein the discrete link is employed to transmit relative motion of the vehicle parts to a surface bearing against the fluid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

64.11+, for other fluid springs adapted for use in vehicles.

SEE OR SEARCH CLASS

280, Land Vehicles,

5.5+, for a general utility land vehicle including an active suspension responsive to a force encountered while the vehicle is in surface traversing motion which may or may not involve a fluid spring device or element; subclasses 6.15+ for a general utility land vehicle including means, interposed between a vehicle body, chassis, or frame and running gear thereof, for altering height or levelness of the vehicle body, chassis, or frame which may or may not involve a fluid spring device or element; subclass 79 for a general utility wheeled land vehicle provided with springs between

the wheel or wheels and the load-support, noting the search notes provided therein; subclasses 124.1+ for a general utility wheeled land vehicle running gear suspension arrangement which may or may not involve a fluid spring device or element, especially subclasses 124.157+ which are directed to a residual fluid suspension (in accordance with industry and mechanical engineering convention, a fluid shock absorber, per se, is not deemed a fluid suspension device for subclasses 124.157+ since it does not normally support any weight but merely retards the extent of motion provided by a spring device attempting to distort or return to its undeflected condition); or subclasses 275+ or 283+ for a general utility occupant propelled-type wheeled land vehicle including yielding framework or running gear which may or may not involve a fluid spring device or element (it is noted that in accordance with the (2) Note of Class 280, subclass 200, motorcycle frames and running gear, without features causing classification in Class 180, Motor Vehicles, are included in these subclasses). Patents classified in this class (Class 267) as originals may include vehicle parts directly related to vehicle suspension (e.g., fluid damper, upper or lower control arm) and vehicle parts which are nominally recited as either a reference or mounting structure for the spring.