(under subclass 249) Apparatus in which the retaining or severing means is moved toward the longitudinal axis of the core due to wedge like action upon relative bodily longitudinal sliding movement between surfaces on the retaining or severing means and the tool.
SEE OR SEARCH THIS CLASS, SUBCLASS:
279+, and 286+, for expansible cutter element with wedge type expansion means.
422, for a clasp (e.g., a well slip assembly) which separately travels with an earth boring shaft or which cooperates with specifically shaped well structure which stops or actuates the clasp.
SEE OR SEARCH CLASS
24, Buckles, Buttons, Clasps, etc., appropriate subclasses, and particularly
114.5, for a strap, cable, or pipe button (i.e., trip or stop projection).
188, Brakes, particularly
67, for brake (e.g., a clasp) mechanically connected to a relatively stationary structure and which holds a pipe or rod at various locations along the pipe's or rod's length for short quick linear assembly or disassembly during a work or manufacturing operation, or preparation to a working operation done by the pipe, rod, or a pipe supported tool.
294, Handling: Hand and Hoist-Line Implements,
86.3+, for grapples that are cammed inwardly to engage an object or earth core within a well bore or similar earth opening.
