US PATENT SUBCLASS 52 / 118
.~.~.~ Telescoping

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

111  DF  MECHANISM OPERATED RELATIVELY MOVABLE SHAFT ASSEMBLY {6}
116  DF  .~ Tilts relative to base {1}
117  DF  .~.~ Relatively moving sections {3}
118.~.~.~ Telescoping

DEFINITION

Classification: 52/118

(under subclass 117) Structure wherein one of said sections is extensible from within the other.

SEE OR SEARCH CLASS

212, Traversing Hoists,

296, for a telescoping boom-supporting tower and means to permit the tower to collapse to a position for transporting the crane; and subclasses 231 and 264 for an extensible, vertically swinging crane boom.