US PATENT SUBCLASS 212 / 346
.~ Trolley having wheels which contact different sides or planes of a beam


Current as of: June, 1999
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212 /   HD   TRAVERSING HOISTS

71  DF  OVERHEAD {7}
346.~ Trolley having wheels which contact different sides or planes of a beam


DEFINITION

Classification: 212/346

Trolley having wheels which contact different sides or planes of abeam:

(under subclass 71) Subject matter wherein the trolley

includes plural wheels arranged in non-parallel axes for contacting off-set surfaces on the beam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

198, for apparatus having a counterweight mounted on a wheeled carriage for rectilinear movement relative to the support above the load.

225+, for a boom* mounted for movement about a vertical axis and having a trolley thereon.

257, for a boom mounted for movement about a horizontal axis only and having a trolley thereon.

312+, for a traveling bridge* having a trolley* thereon.

SEE OR SEARCH CLASS 104, Railways,

89+, for suspended trolley railways and subclasses 188+ monorail railways (no hoisting feature claimed).

105, Railway Rolling Stock,

163, for overhead crane trucks (trolleys) where no hoisting structure is claimed.