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Class Information
Number: 175/189
Name: Boring or penetrating the earth > With tool drive prime mover or above-ground mechanical motion converting drive means > Drive reciprocates tool
Description: Apparatus in which the tool drive comprises a means to cause substantially rectilinear to and from movement of the tool.

Patents under this class:

Patent Number Title Of Patent Date Issued
8342263 Vibratory drill head mounting and rotation coupling system Jan. 1, 2013
7584810 Top drive power swivel assembly Sep. 8, 2009
7240744 Rotary and mud-powered percussive drill bit assembly and method Jul. 10, 2007
7237625 Device for simulataneously casing a hole while drilling Jul. 3, 2007
7093679 Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table Aug. 22, 2006
7013996 Impact device Mar. 21, 2006
6814166 Direct push drilling swivel and method for its use Nov. 9, 2004
6745836 Down hole motor assembly and associated method for providing radial energy Jun. 8, 2004
6702045 Drilling apparatus Mar. 9, 2004
6675916 Boring machine and auger bit Jan. 13, 2004
6371222 Hammer device Apr. 16, 2002
5860482 Multiple force hole forming device Jan. 19, 1999
5353940 Alignment system for crane works and method of alignment Oct. 11, 1994
5305841 Hammer device Apr. 26, 1994
5092411 Drilling apparatus Mar. 3, 1992
5032039 Underground excavator Jul. 16, 1991
4993504 Device for efficient energy transfer and damping of impact drilling machines Feb. 19, 1991
4742876 Submarine drilling device May. 10, 1988
4550788 Roof bolt hole groover Nov. 5, 1985

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