Threaded fastener

Details Threaded fastener Threaded fastener

1976-07-16

1978-05-16

Parsons, Jr., Marion

Bridges

85 45, F16B 2300

Patent

active

040893570

ABSTRACT:
A screw having a head and a threaded shank and, in the head, a cruciform shaped recess comprising a central cavity and four grooves radiating from the central cavity at 90.degree. angular spacings, the bases of the grooves lying on a conical (or pyramidal) surface and wherein the included angle at the vertex of such cone (or pyramid) has a value within the range of 40.degree. - 45.degree., the preferred value being 40.degree..

REFERENCES:
patent: 2046837 (1936-07-01), Phillips
patent: 2082748 (1937-06-01), Brown
patent: 2445978 (1948-07-01), Stellin
patent: 3108623 (1963-10-01), Muenchinger
patent: 3293978 (1966-12-01), Handley

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1193104