Blind rivet

Details Blind rivet Blind rivet

1977-08-26

1980-09-16

Holko, Thomas J.

85 77, F16B 1304

Patent

active

042223040

ABSTRACT:
A blind rivet is injection molden from plastic material. It comprises a female member molded about a male member. The female member is comprised of a flexible tubular wall and a flange about the upper end thereof, the wall defining a stepped portion in the axial bore thereof at the upper end and a plurality of elongate perforations about the wall. The male member is comprised of a shank in the axial bore and axially movable in relation to the tubular wall, an enlarged head at one end in intimate contact and engagement with the lower end of the female member, and a head portion at the other end and protruding from the upper end of the female member. The head portion is shaped to be gripped by a tool for pulling the shank axially through the bore and the shank has a series of peripheral claws each forming a shoulder facing the lower end so that, upon pulling, the perforated flexible tubular wall collapses and expands radially and successive claws snap their respective shoulders into engagement with the shoulder of the stepped portion, the engagement of the shoulders maintaining the tubular wall of the female member radially expanded and locking the male member against axial movement towards the lower end of the female member.

REFERENCES:
patent: 2030169 (1936-02-01), Huck
patent: 2408559 (1946-10-01), Keating
patent: 2803984 (1957-08-01), Swenson
patent: 3178989 (1965-04-01), Siebol
patent: 3230818 (1966-01-01), Siebol
patent: 3251260 (1966-05-01), Serdechny
patent: 3294303 (1966-12-01), Anstett
patent: 3521521 (1970-07-01), King et al.
patent: 3702088 (1972-11-01), Schmitt
patent: 3785241 (1974-01-01), Fischer

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