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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:
| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 7334715 |
Electric fastener driver |
Feb. 26, 2008 |
| 7334647 |
Rotary tool |
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 |
| 7168505 |
Rotary tool |
Jan. 30, 2007 |
| 7168503 |
Power hand 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 |
| 7051820 |
Rotary hammer |
May. 30, 2006 |
| 7053567 |
Power tools |
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 |
| 6892827 |
Electrically operated vibrating drill/driver |
May. 17, 2005 |
| 6874585 |
Power drill |
Apr. 5, 2005 |
| 6863165 |
Overload protection arrangement for a rotatable power tool |
Mar. 8, 2005 |
| 6857983 |
First stage clutch |
Feb. 22, 2005 |
| 6814158 |
Hand-guided drilling or percussion drilling machine |
Nov. 9, 2004 |
| 6793023 |
Hand power tool |
Sep. 21, 2004 |
| 6789631 |
Engine powered torque wrench |
Sep. 14, 2004 |
| 6769593 |
Synchronous drive pin clutch |
Aug. 3, 2004 |
| 6745883 |
Electric power tool |
Jun. 8, 2004 |
| 6739225 |
Screw driving tool |
May. 25, 2004 |
| 6705410 |
Electrical hand-held power tool with a safety clutch |
Mar. 16, 2004 |
| 6681869 |
Hand held rotary-percussion tool with an electronic depth stop |
Jan. 27, 2004 |
| 6676557 |
First stage clutch |
Jan. 13, 2004 |
| 6669072 |
Flywheel operated nailer |
Dec. 30, 2003 |
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