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Class Information
Number: 173/19
Name: Tool driving or impacting > Self-acting advance and retraction cycle
Description: Apparatus comprising a means to positively cause or progressively control the forward movement of the tool into or along the work, and which is adapted to reverse the movement of the tool upon the tool reaching a predetermined position without the intervention of a human attendant.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8469640 Processing machine having positive feed and processing method Jun. 25, 2013
8307910 Drive mechanism for a reciprocating tool Nov. 13, 2012
7882901 System and method for breaking chips formed by a drilling operation Feb. 8, 2011
7827873 Soil sampling apparatus and method Nov. 9, 2010
7694749 Jackhammer with a lift assist Apr. 13, 2010
7677325 Pneumatic tool Mar. 16, 2010
7617884 Drill slide for rock drilling apparatus Nov. 17, 2009
7607491 Jackhammer lift assist Oct. 27, 2009
7510024 System and method for breaking chips formed by a drilling operation Mar. 31, 2009
7270194 Drilling machine with pneumatic control Sep. 18, 2007
7255016 Soil sampler apparatus and method Aug. 14, 2007
7048077 Drilling machine with pneumatic control May. 23, 2006
7040421 Liquid driven downhole drilling machine May. 9, 2006
6959760 Downhole pulser Nov. 1, 2005
6945336 Rotational float for rotating equipment Sep. 20, 2005
6932162 Pneumatic processing machine having automatic stop at the end of a machining cycle Aug. 23, 2005
6871710 Rotational float for rotating equipment Mar. 29, 2005
6681870 Hydraulic actuator Jan. 27, 2004
6559613 Method for operating an open end power wrench May. 6, 2003
6269889 Ground piercing tool with plastic body Aug. 7, 2001
6257348 Control apparatus for drilling machine and drilling method Jul. 10, 2001
6105595 Method, system, and apparatus for automatically preventing or allowing flow of a fluid Aug. 22, 2000
6053258 Hydraulic driven tool controlling apparatus Apr. 25, 2000
5992536 Hydraulic drive tool controlling apparatus Nov. 30, 1999
5971083 Pressure fluid operated impact mechanism Oct. 26, 1999
5893419 Hydraulic impact tool Apr. 13, 1999
5884712 Arrangement for a telescope feeder of a rock-drilling machine Mar. 23, 1999
5778987 Guided drilling system with shock absorber Jul. 14, 1998
5351797 Retraction system for a power tool drive spindle Oct. 4, 1994
5222844 Air logic circuit for airfeed peck drill Jun. 29, 1993
5143161 Right angle positive feed tapper Sep. 1, 1992
5131475 System for controlling drilling force of a telescoping rock drill Jul. 21, 1992
5094570 Interface unit for drills Mar. 10, 1992
5022800 Rapid advance feed drill with idle mode Jun. 11, 1991
4850753 Positive feed device Jul. 25, 1989
4799833 Clutch for positive feed drill Jan. 24, 1989
4681490 Retraction apparatus for automatic feed drills or the like Jul. 21, 1987
4612998 Retracting positive feed drill with idle mode Sep. 23, 1986
4594030 Pneumatic-hydraulic drill unit Jun. 10, 1986
4592681 Retraction apparatus for automatic feed drills or the like Jun. 3, 1986
4591299 Rapid feed apparatus for automatic feed drills or the like May. 27, 1986
4538942 Positive feed drill with stop control Sep. 3, 1985
4479550 Submerging ramming arrangement Oct. 30, 1984
4466493 Reciprocating linear fluid motor Aug. 21, 1984
4440529 Method and means for operating a drill for eliminating axial scratches during retraction Apr. 3, 1984
4418767 Interchangeable valve system for hydraulic reversal of positive feed drill Dec. 6, 1983
4356871 Hydraulic control system for a rock drill Nov. 2, 1982
4284150 Soil sampling device Aug. 18, 1981
4275793 Automatic control system for rock drills Jun. 30, 1981
4257489 Pressure fluid powered machine tool Mar. 24, 1981

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