초록 ▼

A device used to fasten and retain two or more conducting elements with sufficient normal force to insure a reliable electrical contact. The device consists of three individual parts: a bolt, a nut, and a spring washer. The bolt of this invention differs from conventional bolts in that it has no thr

A device used to fasten and retain two or more conducting elements with sufficient normal force to insure a reliable electrical contact. The device consists of three individual parts: a bolt, a nut, and a spring washer. The bolt of this invention differs from conventional bolts in that it has no threads and has a keying feature. The nut is distinguishable from a standard nut in that it also has no typical thread, but has a keying feature and internal ramps. The spring washer provides a linear increase in force proportional to deflection. Like the bolt and nut, the spring washer also has a keying feature.

대표청구항 ▼

A fastener assembly comprising: (a) a bolt having a head, a cylindrical stem and a bolt keying means provided thereon, said stem extending outwardly from and perpendicular to the head of said bolt and having a first end abutting said head and an opposite second end said bolt keying means having two

A fastener assembly comprising: (a) a bolt having a head, a cylindrical stem and a bolt keying means provided thereon, said stem extending outwardly from and perpendicular to the head of said bolt and having a first end abutting said head and an opposite second end said bolt keying means having two pair of diametrically opposed longitudinal ribs, said first pair of ribs extending approximately half of the length of said stem from said opposite second end toward said first end, said second pair of ribs extending approximately half of the length of said stem from said first end toward said second end; (b) a nut having internal slots and a first and a second opposed surface, said internal slots running from said first surface to said second surface, said slots corresponding to said first pair of ribs of said bolt such that said bolt and said nut can be suitably engaged, said internal ramps beginning at said second surface and extending approximately one-quarter of the distance around and internally of said nut providing a surface for said first pair of ribs to travel thereon, each said ramps having a notch for receiving one of the first pair of ribs of said bolt such that the nut and bolt interlock; and (c) a spring means having a spring keying for mating with said bolt, said spring means being disposed on the bolt to provide a linear force between the nut and the head of the bolt responsive to deflection of said spring means when said spring means is located between said nut and said bolt head.