US PATENT SUBCLASS 267 / 70
.~ Compression spring

Current as of: June, 1999
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267 /   HD   SPRING DEVICES

69  DF  ELASTIC EXTENSION DEVICES {2}
70.~ Compression spring {1}
71  DF  .~.~> Single {1}

DEFINITION

Classification: 267/70

(under subclass 69) Structure wherein when the device is extended, the elastic medium is compressed in a line at right angles to its cross-section. If the elastic medium contains coils or bends, the compression is substantially at right angles to the plane of any of the coils or bends.