US PATENT SUBCLASS 5 / 56
.~.~ Assisting spring

Current as of: June, 1999
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5 /   HD   BEDS

12.1  DF  SOFA BED {15}
51.1  DF  .~ Bed element {8}
56.~.~ Assisting spring

DEFINITION

Classification: 5/56

(under subclass 51.1) Devices comprising springs employed in sofa beds to counterbalance the weight of moving parts and assist in opening and closing movements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

164.1+, for counterbalance springs for upending bedsteads.