WEDGING SLIP ASSEMBLY FOR SUPPORTING A PIPE OR ROD:
(under the class definition) Subject matter wherein a tapered clasping structure, when lowered into an opening in a separate hole drilling related structure, e.g., a spider or rotary table, is cammed into gripping and suspending engagement with a drilling tube or stem passing through the opening.
(1) Note. The slip usually temporarily suspends a string of connected pipes or rods during the attaching or detaching of
different sections to the string which is being lowered into or taken out of a drill hole.
(2) Note. The earth boring tool itself is usually not claimed.
(3) Note. Details of the separate hole drilling related structure may not be claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
255, for earth boring or penetrating means including core retaining means of the sliding wedge type.
SEE OR SEARCH CLASS 24, Buckles, Buttons, Clasps, etc., particularly
114.5, for a strap cable, or pipe button, i.e., a trip or stop projection.
73, Measuring and Testing, particularly
831+, and 856+ for clamping, holding or supporting structure peculiar to or having a sole disclosure for use in specimen measuring and testing.
74, Machines Element or Mechanism, particularly
144+, for an intermittent gripping device for moving a member (e.g., a polish rod); and subclasses 579+ for a pitman or connecting rod and its gripping device.
166, Wells, particularly
75.11+, for above ground apparatus for wells including slips for well pipes or casings which are not involved in the drilling of the well and are more permanent in nature; and subclasses 206+ for an expansible anchor or casing. See the class definition of Class 175, section III for the line between Classes 166 and 175.
173, Tool Driving or Impacting, particularly
213+, for a structure which grips and rotates a pipe or rod to move it into and out of a material.
188, Brakes, particularly
67, for a brake 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 preparatory to a working operation, done by the pipe, rod, or a pipe supported tool. 211, Supports: Racks, appropriate subclasses for rack
structure which supports an article against the pull of gravity or holds it in a storage position.
248, Supports, appropriate subclasses for structure which supports an article against the pull of gravity or holds it in a storage position.
254, Implements or Apparatus for Applying Pushing or Pulling Force, appropriate subclasses for a clasp attached to a work pushing or pulling implement or apparatus.
269, Work Holders, appropriate subclasses for a clamp which hold an article (e.g., a pipe or rod) while modifying work is done on it, or while a plurality of articles are being located in an assembled arrangement.
279, Chucks or Sockets, appropriate subclasses for a chuck or socket which grips a pipe, rod, or tool which is intended to be rotated or repeatedly reciprocated by an unclaimed power boring source.
285, Pipe Joints or Couplings, appropriate subclasses for pipe joints or couplings for drilling shafts and
123.15+, and 123.3+, in particular, for pipe joints or couplings for well related pipes or casings through which fluid may flow.
294, Handling: Hand and Hoist-Line Implements, particularly
86+, and 102 for a grapple which is disclosed for gripping articles (e.g., well pipes or rods) being moved between two locations by either a hand or cable lifting force.
