| |
 |
|
Class Information
Number: 81/474
Name: Tools > Wrench, screwdriver, or driver therefor > Responsive to torque on work > Rotatable, coaxial, clutching components > Having intermediate, disparate, interlock element
Description: Wrench or screwdriver including an element (e.g., ball), structurally distinct from and located between the coacting surfaces of the components, which orbits about the same axis of rotation as the components and locks them together when the torque on the work is below the selected value.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7581471 |
Over torque proof socket |
Sep. 1, 2009 |
| 7503443 |
Torque control mechanism |
Mar. 17, 2009 |
| 7484442 |
Torque adjustable screwdriver having a torque indicator |
Feb. 3, 2009 |
| 7475619 |
Over torque proof socket |
Jan. 13, 2009 |
| 7467576 |
Fixed torque limiting driver |
Dec. 23, 2008 |
| 7370561 |
Electric driver |
May. 13, 2008 |
| 7272998 |
Torque-limiting mechanism |
Sep. 25, 2007 |
| 7222559 |
Screwdriver with torque setting mechanism |
May. 29, 2007 |
| 7188557 |
Tightening tool |
Mar. 13, 2007 |
| 7000508 |
Device for numerically displaying torque of torque wrench having a preset maximum torque |
Feb. 21, 2006 |
| 6948410 |
Torque wrench with sleeve for locking rotatable handle |
Sep. 27, 2005 |
| 6640674 |
Screwdriver having a variable torque-limiting in-line drive |
Nov. 4, 2003 |
| 6257107 |
Manufacture of composite material hand tool |
Jul. 10, 2001 |
| 6257351 |
Powered surgical instrument having locking systems and a clutch mechanism |
Jul. 10, 2001 |
| 6155147 |
Torque screwdriver with indexing means lock |
Dec. 5, 2000 |
| 6109149 |
Screw setting tool |
Aug. 29, 2000 |
| 6076439 |
Torque screwdriver with indexing means |
Jun. 20, 2000 |
| 5984022 |
Automatic shaft lock |
Nov. 16, 1999 |
| 5865076 |
Clutch mechanism for screw tightening machine |
Feb. 2, 1999 |
| 5775186 |
Power screw driver |
Jul. 7, 1998 |
| 5568849 |
Clutch mechanism in power driven screwdriver |
Oct. 29, 1996 |
| 5490439 |
Nut tightening device |
Feb. 13, 1996 |
| 5437524 |
Torque-adjustment controller |
Aug. 1, 1995 |
| 5239875 |
Torque limiting tool |
Aug. 31, 1993 |
| 5203242 |
Power tool for two-step tightening of screw joints |
Apr. 20, 1993 |
| 5138916 |
Power operated screwdriver |
Aug. 18, 1992 |
| 5129465 |
Screw tightening power tool |
Jul. 14, 1992 |
| 5101947 |
Connectable drive for a screwdriver spindle |
Apr. 7, 1992 |
| 5094133 |
Screwdriver with switch-off means for screw-in depth and screw-in torque |
Mar. 10, 1992 |
| 4967888 |
Safety clutch for motor-operated hand tool |
Nov. 6, 1990 |
| 4901610 |
Adjustable torque controlling mechanism |
Feb. 20, 1990 |
| 4867019 |
Screwdriving tool |
Sep. 19, 1989 |
| 4836349 |
Clutch type tightening apparatus for allowing free adjustment of tightening force |
Jun. 6, 1989 |
| 4833952 |
Torque limiting screw-tightening tool |
May. 30, 1989 |
| 4774864 |
Dynamometric screw-driver |
Oct. 4, 1988 |
| 4655103 |
Clutch for power screwdrivers |
Apr. 7, 1987 |
| 4653358 |
Tools for use in tightening or removing screw-threaded fasteners |
Mar. 31, 1987 |
| 4497226 |
Cigar lighter socket shell driver tool |
Feb. 5, 1985 |
| 4443943 |
Pipe cutter |
Apr. 24, 1984 |
| 4442738 |
Automatic push-to-start screwdriver |
Apr. 17, 1984 |
| 4360967 |
Assembly tool for electrical connectors |
Nov. 30, 1982 |
| 4262501 |
Torque control installation and removal tool |
Apr. 21, 1981 |
| 4242930 |
Torque controlled clamp stick adapter |
Jan. 6, 1981 |
| 4231270 |
Electrically driven fastening appliance |
Nov. 4, 1980 |
| 4063474 |
Torque limiting screwdriver |
Dec. 20, 1977 |
|
|
|
