US PATENT SUBCLASS 294 / 86.23
.~.~ With impact means

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

86.4  DF  GRAPPLE {18}
86.1  DF  .~ Well type {10}
86.23.~.~ With impact means

DEFINITION

Classification: 294/86.23

(under subclass 86.1) Grapples combined with means to deliver a blow, or to jar the grapple or the object being grappled.

(1) Note. The means to deliver the blow may function to set the grapple or to release or set an object in the well.

SEE OR SEARCH CLASS

166, Wells,

178, for well devices combined with a jar means for releasing them.

175, Boring or Penetrating the Earth,

293, for below ground hammer or impact members, per se.