Screw fastener and driving tool

Details Screw fastener and driving tool Screw fastener and driving tool

1992-04-14

1993-06-01

Swann, J. J.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

411395, 411404, 411410, 81463, B25B 2310

Patent

active

052149870

ABSTRACT:
A screw fastener and a tool for driving the screw fastener is disclosed. The screw fastener has a polygonal driving socket in its head, the driving socket having a substantially square first section and a second section including a rectangular slot radiating outwardly from the center of each side wall of the first section. The depth of the first and second sections are the same. Further, the screw fastener may be provided with internal ducts for conveying lubricant into a workpiece hole in which the fastener is being turned. A driving tool having a square shank for turning the screw fastener is also disclosed. One end of the tool's shank has a driving section comprising a rectangular fin extending longitudinally along and radiating outwardly from the center of each side wall of the shank. The shape of the driving section is complementary in shape to, and dimensioned to be snugly received in, the driving socket. Additionally, the driving tool may be provided with internal reservoir and duct means to convey lubricant through the fastener and into a workpiece hole.

REFERENCES:
patent: 1159779 (1915-11-01), Landau
patent: 2053864 (1936-09-01), Cook et al.
patent: 2173707 (1939-09-01), Brown
patent: 2969250 (1961-01-01), Kull
patent: 4858504 (1989-08-01), Tsai

Affiliated with

Also associated with

Rating

Screw fastener and driving tool 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 fastener and driving tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw fastener and driving tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1807431