US PATENT SUBCLASS 5 / 137
.~.~ Shifting fulcrum

Current as of: June, 1999
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5 /   HD   BEDS

131  DF  BEDSTEADS {6}
133  DF  .~ Upending {18}
137.~.~ Shifting fulcrum {7}
138  DF  .~.~.~> Successive pivoting
139  DF  .~.~.~> Single struts
140  DF  .~.~.~> Strut and guide
141  DF  .~.~.~> Suspending link and guide
142  DF  .~.~.~> Double links
143  DF  .~.~.~> Single guide
144  DF  .~.~.~> Double guide

DEFINITION

Classification: 5/137

(under subclass 133) Devices which substantially changes its position with respect to either the support or bed bottom during the movement. The bed when upended stands with the inner or head end down.