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Browse by Category: Main > Tools & Hardware
Class Information
Number: 173/201
Name: Tool driving or impacting > Impacting devices (e.g., hammers) > Hammer head driven by pulsating fluid pressure > Pulsation caused by mechanical movement
Description: Apparatus wherein application and subsequent release of the fluid force is caused by movable, mechanically operated elements.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8684105 Power tool Apr. 1, 2014
8672050 Hand-held power tool Mar. 18, 2014
8602124 Electric motor driven tool for orthopedic impacting Dec. 10, 2013
8590633 Beat piece wear indicator for powered hammer Nov. 26, 2013
8579043 Battery-powered power tools Nov. 12, 2013
8534376 Pneumatic-spring percussion mechanism with a variable rotary drive Sep. 17, 2013
8464805 Hand-held power tool for percussively driven tool attachments Jun. 18, 2013
8430182 Power tool housing Apr. 30, 2013
8403075 Wobble drive of a hand-held power tool Mar. 26, 2013
8393409 Electric motor driven tool for orthopedic impacting Mar. 12, 2013
8360168 Power tool Jan. 29, 2013
8292002 Hand-held power tool for percussively driven tool attachments Oct. 23, 2012
8281872 Drill hammer with three modes of operation Oct. 9, 2012
8281873 Hand-held power tool Oct. 9, 2012
8272452 Hammering tool Sep. 25, 2012
8267189 Hand-held power tool with a pneumatic percussion mechanism Sep. 18, 2012
8235136 Drilling and/or percussive hammer with no-load operation control Aug. 7, 2012
8181715 Power tool May. 22, 2012
8176997 Hand-held power tool with a chuck for receiving a percussion working tool May. 15, 2012
8146677 Hydraulic breaker assembly Apr. 3, 2012
8087474 Hammer drill Jan. 3, 2012
8087472 Vibration dampening system for a power tool and in particular for a powered hammer Jan. 3, 2012
8083006 Hand-held power tool Dec. 27, 2011
8028761 Electric power tool Oct. 4, 2011
8011442 Power tool with a rotating and/or hammering drive mechanism Sep. 6, 2011
8011443 Striking mechanism for a handheld power tool Sep. 6, 2011
7987921 Hammer Aug. 2, 2011
7967078 Impact tool Jun. 28, 2011
7950471 Hand-held power tool with pneumatic percussion mechanism May. 31, 2011
7938196 Hand-held power tool with vibration-compensating mass May. 10, 2011
7926586 Hand-held power tool with a pneumatic percussion mechanism Apr. 19, 2011
7926584 Hand-held power tool with air spring percussion mechanism, linear motor, and control process Apr. 19, 2011
7886841 Power tool torque overload clutch Feb. 15, 2011
7861799 Impact tool Jan. 4, 2011
7814986 Lubricant system for powered hammer Oct. 19, 2010
7784562 Impact tool Aug. 31, 2010
7766096 Electrical power tool Aug. 3, 2010
7753135 Power tool with a rotating and/or hammering drive mechanism Jul. 13, 2010
7726414 Hollow piston hammer device with air equilibration and idle openings Jun. 1, 2010
7721819 Rotary hammer May. 25, 2010
7712548 Hand-held power tool with an oscillation damper May. 11, 2010
7708083 Hand power tool with a percussion merchanism, and as a method of operating the hand power tool May. 4, 2010
7673703 Hand-held power tool having main and handle housings with a connection device for connecting the housings Mar. 9, 2010
7661484 Drilling hammer and/or percussive hammer having a tool-holding fixture Feb. 16, 2010
7637328 Electrical power tool having vibration control mechanism Dec. 29, 2009
7635032 Hand-held tool comprising a shaft and a lifting bearing which is mounted on the shaft Dec. 22, 2009
7597155 Tool fitting, adapter and system with a tool fitting and an adapter Oct. 6, 2009
7588097 Power impact tool Sep. 15, 2009
7578358 Hand-held hammer drill Aug. 25, 2009
7562721 Vibration reduction apparatus for power tool and power tool incorporating such apparatus Jul. 21, 2009

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