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Class Information
Number: 173/114
Name: Tool driving or impacting > Impacting devices (e.g., hammers) > With means to reciprocate tool
Description: Apparatus including an additional means to reciprocate the tool.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8640787 Portable post driving apparatus Feb. 4, 2014
8636088 Rock drilling machine and axial bearing module Jan. 28, 2014
8540034 Pneumatic drill device Sep. 24, 2013
8534376 Pneumatic-spring percussion mechanism with a variable rotary drive Sep. 17, 2013
8490715 Hand-held machine tool Jul. 23, 2013
8292003 Handheld tool with a linear oscillating drive Oct. 23, 2012
8210274 Vibration hammer Jul. 3, 2012
8191649 Impact screwdriver having a shaft locking device Jun. 5, 2012
8176995 Reduced-impact sliding pressure control valve for pneumatic hammer drill May. 15, 2012
8156655 Pneumatically powered pole saw Apr. 17, 2012
8122972 Drive mechanism for a power tool Feb. 28, 2012
8061434 Percussion device Nov. 22, 2011
7828072 Impact tool Nov. 9, 2010
7823654 Electric post driver Nov. 2, 2010
7735575 Hammer drill with hard hammer support structure Jun. 15, 2010
7677327 Percussion mechanism for a repetitively hammering hand power tool Mar. 16, 2010
7677325 Pneumatic tool Mar. 16, 2010
7654338 Powered hammer having beat piece with lubricant seal Feb. 2, 2010
7628220 Impact motorized wrench Dec. 8, 2009
7581599 Percussive device for a rock drilling machine, method for achieving a reciprocating piston movement and rock drilling machine Sep. 1, 2009
7516801 Impact mechanism for a repeatedly striking hand-held machine tool Apr. 14, 2009
7503923 Impact head assembly for percussive therapeutic device Mar. 17, 2009
7398835 Rotary hammer having both a reciprocating hammer mechanism and a ratcheting hammer mechanism Jul. 15, 2008
7191848 Rolling hammer drill Mar. 20, 2007
7191847 Drive for a motor-driven hand-held tool Mar. 20, 2007
7168169 Anti-rotation drive mechanism for a reciprocating saw Jan. 30, 2007
7143840 Impact tool Dec. 5, 2006
7121360 Hand-held power tool Oct. 17, 2006
7096972 Hammer drill attachment Aug. 29, 2006
7073608 Power tool Jul. 11, 2006
7059423 Jackhammer system Jun. 13, 2006
7025183 Pneumatic spring percussion mechanism with an electro-dynamically actuated driving piston Apr. 11, 2006
7013986 Impact tool Mar. 21, 2006
6955230 Hammer drill and/or chipping hammer Oct. 18, 2005
6926095 Power tool transmission device Aug. 9, 2005
6907942 Percussion tool Jun. 21, 2005
6868918 Power tool driven by linear motor Mar. 22, 2005
6863134 Rotary tool Mar. 8, 2005
6789630 Electric hand tool Sep. 14, 2004
6742266 Miniature reciprocating saw device Jun. 1, 2004
6729412 Power tool driven by linear motor May. 4, 2004
6712156 Switch assembly for a combined hand tool device Mar. 30, 2004
6705408 Power tool with a linear motor Mar. 16, 2004
6695070 Magnetic impact device and method for magnetically generating impact motion Feb. 24, 2004
6648079 Protective apparatus for preventing the infiltration of contaminants in a fluid-operated percussion device Nov. 18, 2003
6626247 Mechanism to fasten adaptors to a head portion of a post driver Sep. 30, 2003
6550546 Spindle lock and chipping mechanism for hammer drill Apr. 22, 2003
6520269 Hand-held tool with electromagnetic hammer mechanism Feb. 18, 2003
6488264 Governor valve device in a pressure fluid operated tool Dec. 3, 2002
6484815 Impact generator Nov. 26, 2002

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