US PATENT SUBCLASS 297 / 300.3
.~.~.~ Fluid-spring

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


297 /   HD   CHAIRS AND SEATS

285  DF  BACK MOVEMENT RESILIENTLY OPPOSED IN OPERATING POSITION {12}
300.1  DF  .~ Back and seat adjust simultaneously {1}
300.2  DF  .~.~ Back tilts while seat inclination adjusts {4}
300.3.~.~.~ Fluid-spring

DEFINITION

Classification: 297/300.3

Fluid-spring:

(under subclass 300.2) Simultaneously adjusted back and seat wherein the resilient member, by way of gas or liquid, resists the tilting of the back (i.e. hydraulic or pneumatic cylinder).