US PATENT SUBCLASS 52 / 121
.~ Longitudinally extensible by flexible drive or hoist

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

111  DF  MECHANISM OPERATED RELATIVELY MOVABLE SHAFT ASSEMBLY {6}
121.~ Longitudinally extensible by flexible drive or hoist

DEFINITION

Classification: 52/121

(under subclass 111) Structure wherein the elongated assembly is extended and collapsed by means of a flexible cable, e.g., Bowden wire, or hoisted by a cable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120, for a tilting mast with relatively movable sections utilizing a gin pole hoist.

632, for a manually extensible shaft.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

500.5+, for a hand operated control lever and linkage system with a flexible transmitter. 212, Traversing Hoists,

230+, 264, and 267 for extensible boom structure for load-handling apparatus.