Screw, screwdriver and screw-holding attachment therefor

Details Screw, screwdriver and screw-holding attachment therefor Screw, screwdriver and screw-holding attachment therefor

1978-09-26

1980-02-26

Simpson, Othell M.

Bridges

145 50A, 145 50D, B25B 1500, B25B 2310

Patent

active

041900910

ABSTRACT:
A screwdriver has an undercut enlarged foot portion and an anti-shift pivot element of one-piece therewith. The screwdriver is longitudinally inserted into a screw such that the foot portion and the pivot element are respectively received with clearance in an undercut slot and a central cavity formed in the screw head. Rotation of the screwdriver about the pivot element causes the foot portion to slide partially underneath and grippingly engage the side walls of the slot. A screwholding attachment is adjustable in fine, continuous manner relative to the screwdriver.

REFERENCES:
patent: 914174 (1909-03-01), North
patent: 942742 (1909-12-01), Presson
patent: 1889330 (1932-11-01), Humes et al.
patent: 1925385 (1933-09-01), Humes et al.
patent: 2579438 (1951-12-01), Longfellow
patent: 2902071 (1959-09-01), La Pointe et al.
patent: 2905215 (1959-09-01), Hlynsky

Affiliated with

Also associated with

Rating

Screw, screwdriver and screw-holding attachment therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2109516