US PATENT SUBCLASS 297 / 302.2
.~.~ 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}
302.1  DF  .~ Back and bottom adjust in a fixed relationship {4}
302.2.~.~ Fluid-spring

DEFINITION

Classification: 297/302.2

Fluid-spring:

(under subclass 302.1) Opposed back and bottom movement wherein the resilient member, by way of gas or liquid, resists the tilting (i.e. hydraulic or pneumatic cylinder).