Autoshut-off device for oil pressure type pulse wrench

Details Autoshut-off device for oil pressure type pulse wrench Autoshut-off device for oil pressure type pulse wrench

1993-08-06

1995-06-06

Lopez, F. Daniel

Motors: expansible chamber type

Torque responsive motive fluid control

173177, F01C 2112

Patent

active

054212405

ABSTRACT:
This invention is intended to effect torque control of high accuracy by detecting the oil pressure at the time of the generation of a pulse which forms the basis of the generated torque for a torque wrench and using the data thus obtained the effect torque control. Oil pressure pulses generated in a pulse generating mechanism 3 by the rotation of an air motor 1 are transmitted to a hydraulic cylinder 4 by a piston 33, a rod 36 and a piston 35. In addition, a pressure sensor 5 installed in the hydraulic cylinder 34 detects the oil pressure pulses and its signal is used to switch a switching valve 7, whereupon a stopping switching valve 9 and a stopping differential pressure valve 8 are successively switched, stopping the feeding of air to the air motor 1 while cutting of the passage of electric current from a battery 61 to an electric control circuit 6.

REFERENCES:
patent: 3116617 (1964-01-01), Skoog
patent: 3368631 (1968-02-01), MacNaughton
patent: 3572447 (1971-03-01), Pauley
patent: 3596718 (1971-08-01), Fish et al.
patent: 5113949 (1992-05-01), Ohkubo et al.
patent: 5277261 (1994-01-01), Sakoh

Affiliated with

Also associated with

Rating

Autoshut-off device for oil pressure type pulse wrench does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Autoshut-off device for oil pressure type pulse wrench, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Autoshut-off device for oil pressure type pulse wrench will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-979615