| |
 |
|
Class Information
Number: 173/177
Name: Tool driving or impacting > Automatic control of power operated means > Drive means responsive to torque or speed condition > Fluid pressure change controls drive
Description: Apparatus wherein the torque or speed of the device is measured by sensing the force exerted on a surface by a gas or liquid, the sensed condition effecting a valve which modifies the tool operation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7222680 |
Pneumatic motor improvements and pneumatic tools incorporating same |
May. 29, 2007 |
| 7040414 |
Pneumatic tool |
May. 9, 2006 |
| 6725948 |
Method of regulating the feed force of a drilling device |
Apr. 27, 2004 |
| 6581696 |
Processes of determining torque output and controlling power impact tools using a torque transducer |
Jun. 24, 2003 |
| 6466927 |
Method for creating a process capability database |
Oct. 15, 2002 |
| 6334494 |
Control unit for hydraulic impact wrench |
Jan. 1, 2002 |
| 6311786 |
Process of determining torque output and controlling power impact tools using impulse |
Nov. 6, 2001 |
| 6205894 |
Automatic stop device for screw striking machine |
Mar. 27, 2001 |
| 6179063 |
Impulse wrench |
Jan. 30, 2001 |
| 6164393 |
Impact tool |
Dec. 26, 2000 |
| 6019180 |
Method for evaluating the power output of a drilling motor under downhole conditions |
Feb. 1, 2000 |
| 5934385 |
Tapping tool and method for driving or controlling a tapping tool with pressurized fluid |
Aug. 10, 1999 |
| 5913371 |
Apparatus for controlling the feed drive of a boring mechanism for making earth bores |
Jun. 22, 1999 |
| 5626198 |
Pneumatic torque impulse tool |
May. 6, 1997 |
| 5492185 |
Impulse wrench |
Feb. 20, 1996 |
| 5439063 |
Compressed-air screw or bolt tightener, especially an impulse or a torque screw or bolt tightener |
Aug. 8, 1995 |
| 5421240 |
Autoshut-off device for oil pressure type pulse wrench |
Jun. 6, 1995 |
| 5346021 |
Fastening tool having improved pressure regulator device |
Sep. 13, 1994 |
| 5217079 |
Hydro-impulse screwing device |
Jun. 8, 1993 |
| 5117919 |
Torque control system and method |
Jun. 2, 1992 |
| 5113949 |
Tightening control apparatus for a torque wrench |
May. 19, 1992 |
| 4991663 |
Shut-off valve having variable input |
Feb. 12, 1991 |
| RE33526 |
Power tongs and control system |
Jan. 29, 1991 |
| 4903783 |
Solenoid controlled air tool |
Feb. 27, 1990 |
| 4898248 |
Hydraulic device |
Feb. 6, 1990 |
| 4887499 |
Power screwdriver with torque limiter |
Dec. 19, 1989 |
| 4844176 |
Air tool with torque shut-off valve |
Jul. 4, 1989 |
| 4821815 |
Technique for providing an underground tunnel utilizing a powered boring device |
Apr. 18, 1989 |
| 4721166 |
Automatic shut-off valve for power tools |
Jan. 26, 1988 |
| 4700787 |
Power tong torque control |
Oct. 20, 1987 |
| 4679469 |
Power tongs controller with persisting torque |
Jul. 14, 1987 |
| 4635731 |
Impulse tool |
Jan. 13, 1987 |
| 4579024 |
Power tongs and control system |
Apr. 1, 1986 |
| 4534419 |
Method for pile driving and dragging |
Aug. 13, 1985 |
| 4522269 |
Dual motor torque delivering tool |
Jun. 11, 1985 |
| 4492146 |
Shut-off device for a fluid driven motor |
Jan. 8, 1985 |
| 4484871 |
Torque delivering tool with dual motor drive |
Nov. 27, 1984 |
| 4442738 |
Automatic push-to-start screwdriver |
Apr. 17, 1984 |
| 4434858 |
Air tool with stall torque regulator and air biasing mechanism |
Mar. 6, 1984 |
| 4418764 |
Fluid impulse torque tool |
Dec. 6, 1983 |
| 4300641 |
Torque responsive, dual speed rotary power driver |
Nov. 17, 1981 |
| 4278427 |
Compressed-air dental motor |
Jul. 14, 1981 |
| 4243111 |
Automatic shut-off valve for power tools |
Jan. 6, 1981 |
| 4195699 |
Drilling optimization searching and control method |
Apr. 1, 1980 |
| 4120604 |
Portable pneumatic nut running tool having air shut-off controls |
Oct. 17, 1978 |
| 4113080 |
Torque wrench air shut-off |
Sep. 12, 1978 |
| 4076449 |
Pressure gas engine |
Feb. 28, 1978 |
| 4057360 |
Pressure gas engine |
Nov. 8, 1977 |
| 4032252 |
Pressure gas engine |
Jun. 28, 1977 |
| 4023627 |
Air shut-off tool |
May. 17, 1977 |
|
|
|
