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Class Information
Number: 173/4
Name: Tool driving or impacting > Automatic control of power operated means > Tool advance causing or controlling means
Description: Apparatus in which the sensed condition of operation controls a power operated means to initiate, modify, or terminate the operation of the means to positively cause or progressively control the forward movement of the tool into or along the work.

Sub-classes under this class:

Class Number Class Name Patents
173/10 Responsive to length of stroke of means reciprocating hammer head or tool 11
173/5 Responsive to torque or speed condition of drive 34

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8674640 Electric power tool Mar. 18, 2014
RE44311 Power tool anti-kickback system with rotational rate sensor Jun. 25, 2013
8464810 Method of modifying drilling pattern, rock drilling rig, and software product Jun. 18, 2013
8453759 Method of directing drilling pattern in curved tunnels, rock drilling rig, and software product Jun. 4, 2013
8372082 Surgical apparatus with force limiting clutch Feb. 12, 2013
8347980 Hydraulic aggregate for hydraulic power wrenches Jan. 8, 2013
8253790 Cylinder stroke system with laser proximity detector Aug. 28, 2012
8210275 Power tools Jul. 3, 2012
8151899 Method and device for rock drilling Apr. 10, 2012
8122974 Apparatus for drilling machine alignment Feb. 28, 2012
8092125 Safety device for a peck drill Jan. 10, 2012
8061434 Percussion device Nov. 22, 2011
7900712 Hydraulic system for mining equipment and method of adjusting power of rock drill machine Mar. 8, 2011
7896098 Power tools Mar. 1, 2011
7896099 Upper beam for a telescopic feeder, telescopic feeder and drilling device for rock drilling Mar. 1, 2011
7762346 Method and system for collaring Jul. 27, 2010
7730970 Drilling efficiency through beneficial management of rock stress levels via controlled oscillations of subterranean cutting levels Jun. 8, 2010
7721816 Drilling/bolting machine having a manual operator input device with enable switch and related methods May. 25, 2010
7681659 Power tool anti-kickback system with rotational rate sensor Mar. 23, 2010
7681660 Arrangement for positioning drilling unit Mar. 23, 2010
7673701 Power tool having control means for monitoring screw tightening operations Mar. 9, 2010
7654337 Arrangement for controlling rock drilling Feb. 2, 2010
7614459 Slip clutch with two-action drive system activation Nov. 10, 2009
7588096 Cordless fastener tool with fastener driving and rotating functions Sep. 15, 2009
7552781 Power tool anti-kickback system with rotational rate sensor Jun. 30, 2009
7497272 Hand-held power tool Mar. 3, 2009
7424920 Method and device for impact loosening of thread joints Sep. 16, 2008
7422075 Rotary tool Sep. 9, 2008
7419015 Rock drilling machine and axial bearing Sep. 2, 2008
7404455 Automatic SPT monitor Jul. 29, 2008
7401659 Positioning structure of the transmission device of a screw fastening apparatus Jul. 22, 2008
7398834 Hammer drill with selective lock-on Jul. 15, 2008
7350593 Electronically controlled earth drilling rig Apr. 1, 2008
7346406 System and method for data retrieval in AC power tools via an AC line cord Mar. 18, 2008
7322425 Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device Jan. 29, 2008
7296475 Displacement instrument for determining the modulus of a material Nov. 20, 2007
7235940 Torque limiting device for an electric motor Jun. 26, 2007
7231989 Drilling control arrangement Jun. 19, 2007
7189033 Apparatus and methods for thrust sensing valves Mar. 13, 2007
7172034 Boring control method Feb. 6, 2007
7054696 System and method for data retrieval in AC power tools via an AC line cord May. 30, 2006
7036703 Hand-held working tool May. 2, 2006
7032684 Method of opening joints between drilling components, and rock drill Apr. 25, 2006
7029142 Power tool Apr. 18, 2006
6959770 Portable drilling apparatus Nov. 1, 2005
6951256 Machine tool having coaxial driving device Oct. 4, 2005
6938702 Method and equipment for controlling operation of rock drilling apparatus Sep. 6, 2005
6923268 Electric rotational tool driving switch system Aug. 2, 2005
6836614 Electrical power tool having a motor control circuit for providing control over the torque output of the power tool Dec. 28, 2004
6796388 Drill depth control device Sep. 28, 2004

1 2 3

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