US PATENT SUBCLASS 16 / 289
.~.~.~ To counterbalance weight of hinged member (e.g., closure biased to open position)

Current as of: June, 1999
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16 /   HD   MISCELLANEOUS HARDWARE

221  DF  HINGE {32}
277  DF  .~ Resiliently biased hinge {10}
286  DF  .~.~ Having transverse helical spring or elastic strip {4}
289.~.~.~ To counterbalance weight of hinged member (e.g., closure biased to open position) {1}
290  DF  .~.~.~.~> Including pivoted coaxial spring retaining bar

DEFINITION

Classification: 16/289

To counterbalance weight of hinged member (e.g., closure biased to open position):

(under subclass 286) Hinge wherein the elastically deformable element is arranged to offset the weight of a hinged member* as the member is swung about the hinge axis*.