US PATENT SUBCLASS 297 / 344.19
.~.~.~.~ Gas or hydraulic cylinder

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

311  DF  MOVABLE BOTTOM {5}
344.1  DF  .~ Bottom and back movable as a unit {3}
344.12  DF  .~.~ Vertically adjustable {4}
344.18  DF  .~.~.~ Slidably coupled components (e.g., telescoped, etc.) {2}
344.19.~.~.~.~ Gas or hydraulic cylinder

DEFINITION

Classification: 297/344.19

Gas or hydraulic cylinder:

(under subclass 344.18) Device wherein the vertical adjustment means includes an assembly having a piston slidable inside a cylinder, wherein the piston contacts gas or liquid within the cylinder.