Torque releasing clutch for a screw driver blade

Details Torque releasing clutch for a screw driver blade Torque releasing clutch for a screw driver blade

2007-08-20

2010-06-15

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Responsive to movement of work

C081S467000

Reexamination Certificate

active

07735400

ABSTRACT:
A torque releasing clutch for a screw driver blade is installed in a connect rod, including a spring, ball holes for fitting steel balls, and a washer respectively in the holes to restrict the spring and the steel balls within the groove of the clutch so that the clutch moves forward and backward regularly. When a screw is driven in an object for a preset depth, the clutch may push forward the screw driver blade so that the torque-releasing steel balls may release the screw driver blade in time. Then, even if the screw driver should still have some torque, it might only rotate the connect rod idly, keeping the driver blade immovable. Thus the remaining torque might not damage the blade slot of the screw, in addition to avoiding the remaining torque returning to a user of the screw driver and harming the user.

REFERENCES:
patent: 3793912 (1974-02-01), Bilz
patent: 3937036 (1976-02-01), Sauerwein
patent: 4284923 (1981-08-01), Pottier
patent: 4653358 (1987-03-01), Lankry
patent: 4753142 (1988-06-01), Horniing
patent: 5182973 (1993-02-01), Martindell
patent: 5350026 (1994-09-01), Markus et al.
patent: 5437524 (1995-08-01), Huang
patent: 5576501 (1996-11-01), Huang
patent: 5996452 (1999-12-01), Chiang
patent: 6192776 (2001-02-01), Leitner
patent: 6364318 (2002-04-01), Bedi et al.
patent: 6530299 (2003-03-01), Liu
patent: 7175185 (2007-02-01), Chen
patent: 7278640 (2007-10-01), Allan et al.
patent: 7383756 (2008-06-01), Liu
patent: 7387054 (2008-06-01), Rajotte
patent: M247354 (2004-10-01), None

Affiliated with

Also associated with

Rating

Torque releasing clutch for a screw driver blade does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Torque releasing clutch for a screw driver blade, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Torque releasing clutch for a screw driver blade will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4188845