.~ Crane boom supported by foldable or collapsible tower {2}
297
.~.~ Hydraulically pivoted tower or tower sections
DEFINITION
Classification: 212/297
Hydraulically pivoted tower or tower sections:
(under subclass 295) Subject matter wherein the elongated boom* support is (a) pivoted to or from a horizontal transport attitude by pressure of a working fluid or (b) comprised of a plurality of longitudinal segments pivotally connected in end-to-end fashion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
238, for apparatus having a horizontally and vertically swinging boom and a fluid-actuated ram for swinging the boom vertically.
261, for apparatus having a boom swingable vertically by a fluid-actuated ram.
SEE OR SEARCH CLASS
52, Static Structures (e.g., Buildings),
115, for an elongated member or construction moved relative to a base by a fluid-actuated mechanism and subclasses 116+ for a tiltable member having relatively moving sections.
