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Class Information
Number: 175/287
Name: Boring or penetrating the earth > Cutter element laterally shiftable below ground (e.g., expansible) > Cutter element shifted by longitudinally relatively movable parts > Cam or gear engaging cutter element > With separate latch holding cutter element in shifted position
Description: Apparatus combined with a movable member which is separate from the laterally movable cutter element or the cam or gear and which engages a portion of the movable parts to hold the cutter element in the position in which it is displaced laterally of the bit head the maximum distance from the longitudinally axis of the bit head or shaft.










Patents under this class:

Patent Number Title Of Patent Date Issued
7383900 Drill bit and system for drilling a borehole Jun. 10, 2008
7370712 Under reamer May. 13, 2008
7195085 Drill bit Mar. 27, 2007
4846290 Underreamer with revolving diamond cutter elements Jul. 11, 1989
4575294 Anchoring bolt Mar. 11, 1986
4446934 Boring tool for radial enlargement of a cylindrical foundation bore May. 8, 1984
4091883 Underreaming tool with overriding extended arm retainer May. 30, 1978











 
 
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