US PATENT SUBCLASS 297 / 344.15
.~.~.~ Pivotal linkage assembly

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}
344.15.~.~.~ Pivotal linkage assembly {2}
344.16  DF  .~.~.~.~> Gas or hydraulic cylinder
344.17  DF  .~.~.~.~> Motor actuated

DEFINITION

Classification: 297/344.15

Pivotal linkage assembly:

(under subclass 344.12) Device wherein the vertical adjustment means includes a plurality of elongated pivotally interconnected members.