Blind bolt assembly

Details Blind bolt assembly Blind bolt assembly

1996-11-08

1998-01-13

Saether, Flemming

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Having separate expander means

Including sleeve and distinct tapered expander

411 60, 411 29, 411 55, F16B 1306

Patent

active

057071900

ABSTRACT:
A blind bolt for fastening superposed construction materials with each other through insertion thereof into through holes formed in the construction materials, which blind bolt comprising a bolt section having a male screw, a flange portion formed at one end of the bolt body, and a tapered slanted surface extended from one end of the external peripheral surface of the flange portion to the male screw, a cylindrical spacer formed with a plurality of slits opened to one longitudinal end thereof, which spacer receiving the bolt body in such a manner that the slits are abutted against the flange portion, and a nut to be tightened by engaging with the male screw. With this construction above, as the bendable piece of the spacer is sandwiched between the inner surface of the holes in the construction materials and the flange of the bolt, even though the inner surface of the holes is mechanically deformed, the bendable piece is not severed, so that an extremely great tensile strength can be provided.

REFERENCES:
patent: 1342201 (1920-06-01), Beckwith
patent: 3460429 (1969-08-01), Torre
patent: 3489056 (1970-01-01), Blakeley
patent: 4287807 (1981-09-01), Pacharis
patent: 4702654 (1987-10-01), Frischmann
patent: 5383753 (1995-01-01), Palm

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