US PATENT SUBCLASS 297 / 344.21
.~.~ About vertical axis; i.e., rotates

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}
344.21.~.~ About vertical axis; i.e., rotates {4}
344.22  DF  .~.~.~> Including means to lock unit at distinct rotated positions {1}
344.24  DF  .~.~.~> Having additional movement in horizontal plane
344.25  DF  .~.~.~> Back tilted to permit seat rotation
344.26  DF  .~.~.~> Including antifriction feature (e.g., ball bearings, etc.)

DEFINITION

Classification: 297/344.21

About vertical axis; i.e., rotates:

(under subclass 344.1) Device wherein the unit includes structure which permits the unit to rotate in a substantially horizontal plane about an axis normal to said plane.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13, for a folding bottom which releases a rotation-preventing detent.

137, for seat rotatable within the periphery of an aperture table.

142, for a seat horizontally swinging beneath a table.

240+, for rotatable plural related seats.

256.12, for a rotatable rigid supplemental seat.

263.1+, for a rocking chair mounted on a rotatable track. 311+, for a rotatable bottom combined with an adjunctive rest other than a back.

337+, for a seat rotatable independently of a back.

SEE OR SEARCH CLASS

248, Supports,

415+, for a rotatable standard-type stand, and subclasses 425+ for another type of rotatable stand.