US PATENT SUBCLASS 248 / 183.2
.~.~.~.~ On a single horizontal pivot and rotatable about a vertical axis

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.~.~.~.~ On a single horizontal pivot and rotatable about a vertical axis {2}
183.3  DF  .~.~.~.~.~> Pivot biased by spring (e.g., coil, Belleville, torsional, washer)
183.4  DF  .~.~.~.~.~> Pivot operated by gear system

DEFINITION

Classification: 248/183.2

On a single horizontal pivot and rotatable about a vertical axis:

(under subclass 178.1) Adjustable platform in which the article securing means is movable about a fixed axis in a general level plane and revolvable about an axis disposed in an elevation plane.