US PATENT SUBCLASS 5 / 211
.~.~.~ Tighteners

Current as of: June, 1999
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5 /   HD   BEDS

131  DF  BEDSTEADS {6}
400  DF  .~ Having bottom {9}
*  DD  .~.~ Fabricated elastic flats {6}
211.~.~.~ Tighteners {6}
212  DF  .~.~.~.~> Cord take-up
213  DF  .~.~.~.~> Lever and screw
214  DF  .~.~.~.~> Lever
215  DF  .~.~.~.~> Depression self-tightener
216  DF  .~.~.~.~> Roller {3}
220  DF  .~.~.~.~> Screw {5}

DEFINITION

Classification: 5/211

(under subclass 131) Devices permanently connected to a bed-bottom frame or bedstead for progressive tightening adjustment of an elastic fabric bottom.

SEE OR SEARCH THIS CLASS, SUBCLASS:

187, for tightening devices for bed bottoms specific to canvas.

SEE OR SEARCH CLASS

140, Wireworking,

110, for machines for giving initial stretch during assembly of fabric and frames and for frame-attaching devices for securing wire-mattress fabric to bed frames.

254, Implements or Apparatus for Applying Pushing or Pulling Force, 199+, for detachable implements or apparatus for tensioning flexible material.