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Class Information
Number: 81/57.31
Name: Tools > Wrench, screwdriver, or driver therefor > Machine > Gear-operated > Common axis drive
Description: Wrench or screwdriver wherein the drive means and the driven means are on a common axis.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7225707 |
Torque wrench with quick-release gear set |
Jun. 5, 2007 |
| 7171872 |
Adjustable mechanical screwdriver |
Feb. 6, 2007 |
| 7168340 |
Ratchet wrench having constant drive |
Jan. 30, 2007 |
| 7140277 |
Device for quickly releasing socket from extension rod |
Nov. 28, 2006 |
| 6899653 |
Fastener with gear assembly |
May. 31, 2005 |
| 6810773 |
Open end ratchet wrench |
Nov. 2, 2004 |
| 6786114 |
Gripwheel driver and method of attachment to obtain unique properties |
Sep. 7, 2004 |
| 6681660 |
Variable speed ratchet wrench and method of use |
Jan. 27, 2004 |
| 6578451 |
Remote bolt installation tool |
Jun. 17, 2003 |
| 6401572 |
Torque tool |
Jun. 11, 2002 |
| 6295895 |
Hand tool with supporting arm and retaining mechanism and a method for loosening of attachment means |
Oct. 2, 2001 |
| 6289769 |
Electromagnetic nutrunner socket collar |
Sep. 18, 2001 |
| 6155139 |
Pneumatically operable screw driver |
Dec. 5, 2000 |
| 6035746 |
Gear transmission cartridge |
Mar. 14, 2000 |
| 6012359 |
Gear transmission cartridge |
Jan. 11, 2000 |
| 5931062 |
Efficient mechanical rectifier |
Aug. 3, 1999 |
| 5924339 |
Screwdriver |
Jul. 20, 1999 |
| 5650573 |
Motor driven screwdriver |
Jul. 22, 1997 |
| 5616095 |
Force multiplier tool |
Apr. 1, 1997 |
| 5540629 |
Mechanism for conteracting reaction torque in a powered, reversible, hand-held rotary driver |
Jul. 30, 1996 |
| 5406866 |
Speed-selectable screwdriver |
Apr. 18, 1995 |
| 5354246 |
Mechanism in a powered hand-held rotary driver for counteracting reaction torque |
Oct. 11, 1994 |
| 5289743 |
Two-speed reduction geared screwdriver |
Mar. 1, 1994 |
| 5284071 |
Unfolding bolt tightening spanner |
Feb. 8, 1994 |
| 5269733 |
Power tool plastic gear train |
Dec. 14, 1993 |
| 5238461 |
Reactionlless differential rotary driver having optimized output torques |
Aug. 24, 1993 |
| 5176047 |
Tire dismounting tool for large motor vehicles |
Jan. 5, 1993 |
| 5149230 |
Rotating dual attachment receptacle apparatus tool |
Sep. 22, 1992 |
| 5125297 |
Wheel nut loosening and tightening hand tool |
Jun. 30, 1992 |
| 5123308 |
Torque multiplying lug nut wrench |
Jun. 23, 1992 |
| 5123309 |
Integrated spindle actuator assembly for nut-runners |
Jun. 23, 1992 |
| 5105688 |
Reversible unidirectional transmission |
Apr. 21, 1992 |
| 5027679 |
Fastener driver |
Jul. 2, 1991 |
| 5009132 |
Torque device |
Apr. 23, 1991 |
| 4970915 |
Reversible unidirectional transmission |
Nov. 20, 1990 |
| 4901606 |
Apparatus for inserting and extracting light bulbs |
Feb. 20, 1990 |
| 4885962 |
Pneumatic torque wrench for valve handwheels |
Dec. 12, 1989 |
| 4878405 |
Collet lock for power tool |
Nov. 7, 1989 |
| 4802387 |
Reversible unidirectional transmission |
Feb. 7, 1989 |
| 4627310 |
Ratio speed adaptor |
Dec. 9, 1986 |
| 4625774 |
Conductor unwrapping attachment for motor driven tool |
Dec. 2, 1986 |
| 4597453 |
Drive unit with self-aligning gearing system |
Jul. 1, 1986 |
| 4561331 |
Wheel rim wrench |
Dec. 31, 1985 |
| 4545268 |
Compact torque converter tool |
Oct. 8, 1985 |
| 4535653 |
Ratio speed adaptor |
Aug. 20, 1985 |
| 4507990 |
Ratchet wrench |
Apr. 2, 1985 |
| 4485698 |
Torque delivering tool with torque reaction support |
Dec. 4, 1984 |
| 4462282 |
Power tool with torque reaction bar |
Jul. 31, 1984 |
| 4448098 |
Electrically driven screw-driver |
May. 15, 1984 |
| 4426895 |
Ratchet wrench |
Jan. 24, 1984 |
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