Power screwdriver

Details Power screwdriver Power screwdriver

1990-07-24

1991-10-29

Ro, Bentsu

Electricity: motive power systems

Limitation of motor load, current, torque or force

318430, 318476, H02P 306

Patent

active

050618857

ABSTRACT:
An apparatus detects stoppage of a motor of a power driven screwdriver due to the excess load. After detecting stoppage, power to the motor is increased gradually to a predetermined value to firmly tighten the screw. The time of increase of power is determined at an arbitrary value.

REFERENCES:
patent: 4056762 (1977-11-01), Schadlich
patent: 4066942 (1978-01-01), Bardwell et al.
patent: 4463293 (1984-07-01), Hornung et al.
patent: 4510424 (1985-04-01), Doniwa
patent: 4906980 (1990-03-01), Fukuhara

Affiliated with

Also associated with

Rating

Power screwdriver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power screwdriver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power screwdriver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1402211