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Browse by Category: Main > Tools & Hardware
Class Information
Number: 173/178
Name: Tool driving or impacting > Automatic control of power operated means > Drive means responsive to torque or speed condition > Having torque responsive clutch
Description: Apparatus wherein a device to engage or to disengage the connection between the drive means and the power means is provided and operates in response to a change in the force applied to the tool to move the tool about an axis.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7588094 Power hand tool Sep. 15, 2009
7565935 Powered tap driver with rotary control structure Jul. 28, 2009
7556103 Tightening tool and tightening tool management system Jul. 7, 2009
7506694 Rotary tool Mar. 24, 2009
7469753 Power tool, drive assembly, and method of operating the same Dec. 30, 2008
7455121 Power tool Nov. 25, 2008
7455123 Hand-held power tool with a torque-limiting unit Nov. 25, 2008
7452304 Multispeed power tool transmission Nov. 18, 2008
7441480 Disposable battery powered screw driver, locking mechanism, and accessories Oct. 28, 2008
7422075 Rotary tool Sep. 9, 2008
7413029 Screw fastening machine Aug. 19, 2008
7410007 Impact rotary tool with drill mode Aug. 12, 2008
7410441 Multispeed power tool transmission Aug. 12, 2008
7404781 Multispeed power tool transmission Jul. 29, 2008
7395874 Slaving and blocking device Jul. 8, 2008
7380613 Electric power tool Jun. 3, 2008
7360607 Hand-held power tool with a torque-limiting unit Apr. 22, 2008
7334647 Rotary tool Feb. 26, 2008
7334715 Electric fastener driver Feb. 26, 2008
7314097 Hammer drill with a mode changeover mechanism Jan. 1, 2008
7308948 Electric power tool Dec. 18, 2007
7234536 Power screwdriver Jun. 26, 2007
7228899 Warning device and method to prevent clutch burning Jun. 12, 2007
7223195 Multispeed power tool transmission May. 29, 2007
7220211 Multispeed power tool transmission May. 22, 2007
7213659 Impact drill May. 8, 2007
7168503 Power hand tool Jan. 30, 2007
7168505 Rotary tool Jan. 30, 2007
7165663 Power screwdriver with low-noise torque clutch Jan. 23, 2007
7118507 Automatic reduction-ratio changing apparatus Oct. 10, 2006
7101300 Multispeed power tool transmission Sep. 5, 2006
7093679 Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table Aug. 22, 2006
7077255 Pneumatic power nut runner with automatic shut-off Jul. 18, 2006
7063173 Spindle unit with switchable gear, and method for using the spindle unit Jun. 20, 2006
7055620 Hand-held machine tool Jun. 6, 2006
7053567 Power tools May. 30, 2006
7051820 Rotary hammer May. 30, 2006
7048075 Power tool May. 23, 2006
7036608 Apparatus for producing self-exciting hammer action, and rotary power tool incorporating such apparatus May. 2, 2006
7025151 Device for limiting a torque to be transferred Apr. 11, 2006
7011165 Rotating electric hand tool implement with safety routine Mar. 14, 2006
6984188 Multispeed power tool transmission Jan. 10, 2006
6981557 Process for controlling an axially hammering and rotating electric hand-held machine tool Jan. 3, 2006
6974107 Thrust reverser system actuator having an integral torque limiter Dec. 13, 2005
6941724 Screw capping head Sep. 13, 2005
6933689 Power tools Aug. 23, 2005
6929074 Elbow-type power hand tool Aug. 16, 2005
6926095 Power tool transmission device Aug. 9, 2005
6923271 Hand power tool Aug. 2, 2005
6910540 Torque control system for electrically driven rotating tools Jun. 28, 2005

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