US PATENT SUBCLASS 369 / 253
.~.~.~ By resilient force element (e.g., spring)

Current as of: June, 1999
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369 /   HD   DYNAMIC INFORMATION STORAGE OR RETRIEVAL

176  DF  DYNAMIC MECHANISM SUBSYSTEM {8}
244  DF  .~ Specific detail of transducer assembly support structure (e.g., tone arm) {8}
251  DF  .~.~ Having application of counterbalancing force {3}
253.~.~.~ By resilient force element (e.g., spring)

DEFINITION

Classification: 369/253

By resilient force element (e.g., spring):

(under subclass 251) Subject matter wherein the counterbalancing force is a displacement dependent restoring force applied by a highly elastic mechanical device or element.

(1) Note. Examples of such mechanical devices include a hydraulic or pneumatic device, a coiled spring, or a block of rubber.