Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Patent
1987-04-14
1988-11-01
Smith, Gary L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Bulged by axially contracting ends
411 37, 411 43, F16B 1306
Patent
active
047815000
ABSTRACT:
A metal blind rivet assembly having a plurality of ribs with flutes between them located about the circumference of the barrel of the rivet sleeve. The ribs are arranged in a helix and at an angle so that during the setting operation a twisting motion takes place to scrape the workpiece so that contaminants such as dirt or varnish are removed to provide electrical contact with the workpiece.
REFERENCES:
patent: 2030166 (1936-02-01), Huck
patent: 3735665 (1973-05-01), Mortensen
patent: 3866998 (1975-02-01), Iantorno
patent: 4236429 (1980-12-01), Dolch
patent: 4436467 (1984-03-01), Larsson et al.
Brueske Curtis B.
Emhart Enterprises Corp.
Smith Gary L.
Szatkowski Thomas S.
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