US PATENT SUBCLASS 116 / 164
.~.~.~ Spring impact

Current as of: June, 1999
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116 /   HD   SIGNALS AND INDICATORS

148  DF  BELLS {10}
152  DF  .~ Gong type {4}
155  DF  .~.~ Pivoted striker {4}
164.~.~.~ Spring impact

DEFINITION

Classification: 116/164

(under subclass 155) Devices in which a single stroke is given by the impact of a hammer driven by a spring placed in tension or compression by the actuating device.