US PATENT SUBCLASS 294 / 86.17
.~.~ With releasing means

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

Internet Version by PATENTEC © 1999      Terms of Use


294 /   HD   HANDLING: HAND AND HOIST-LINE IMPLEMENTS

86.4  DF  GRAPPLE {18}
86.1  DF  .~ Well type {10}
86.17.~.~ With releasing means {4}
86.18  DF  .~.~.~> Excessive force-responsive
86.19  DF  .~.~.~> Spring release means
86.2  DF  .~.~.~> Grappling means latched in release position {1}
86.22  DF  .~.~.~> Screw-threaded

DEFINITION

Classification: 294/86.17

(under subclass 86.1) Grapples having a grappling means that engages and holds an object for removal from a well, and further provided with means formed as part of the grapple for releasing the grappling means from its engaged position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

86.14+, for well grapples having separate grapple operating means which may include releasing means, and see the search notes thereunder for other grapples in Class 294 of general utility having separate grapple operating means.

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth,

294, for below ground impact apparatus combined with a joint

between two parts which may be selectively uncoupled below ground independently of the other joints in the apparatus, and subclasses 300+ for below ground impact apparatus combined with telescoping members and having selectively releasable means on one of the telescoping members for engaging and holding the other member against relative axial movement.