US PATENT SUBCLASS 248 / 183.3
.~.~.~.~.~ Pivot biased by spring (e.g., coil, Belleville, torsional, washer)

Current as of: June, 1999
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248 /   HD   SUPPORTS

127  DF  STAND {14}
176.1  DF  .~ To hold a particular article {3}
177.1  DF  .~.~ Having platform for mounting article directly above stationary stand (e.g., tripod head) {3}
178.1  DF  .~.~.~ Adjustable platform {5}
183.2  DF  .~.~.~.~ On a single horizontal pivot and rotatable about a vertical axis {2}
183.3.~.~.~.~.~ Pivot biased by spring (e.g., coil, Belleville, torsional, washer)

DEFINITION

Classification: 248/183.3

Pivot biased by spring (e.g., coil, Belleville, torsional, washer type, etc.):

(under subclass 183.2) Pivotable and rotatable platform in which platform movement is affected by a resilient member.