US PATENT SUBCLASS 294 / 88
.~ Magnet- or piston-controlled

Current as of: June, 1999
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294 /   HD   HANDLING: HAND AND HOIST-LINE IMPLEMENTS

86.4  DF  GRAPPLE {18}
88.~ Magnet- or piston-controlled

DEFINITION

Classification: 294/88

(under subclass 86.4) Devices in which the operation of the grapple is caused by magnetic means or fluid-operated pistons.

SEE OR SEARCH THIS CLASS, SUBCLASS:

86.15, for grappling means having fluid pressure means to set the grappling means and which is peculiarly adapted to function in a well bore.

SEE OR SEARCH CLASS

37, Excavating,

182, and 461, for piston-controlled grappling means specialized to excavating.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, 285+, for work or object holding magnetic devices.