Expansible fixing plug of plastic material

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander

Patent

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Details

411 60, F16B 1306

Patent

active

056035934

ABSTRACT:
An expansible fixing plug, comprising a body part composed of a plastic material and having a leading end and a rear end, the body part having a longitudinal channel extending from the rear end for insertion of a fixing screw and the like. The longitudinal channel has a cylindrical portion approximately corresponding to an external diameter of the screw. A narrowing portion adjoins the cylindrical portion. The body part also has a slot extending from the leading end over a part of a length of the body part. The narrowing portion of the longitudinal channel has a cross-section starting from the cylindrical portion and having a lozenge shape. The narrowing portion of the longitudinal channel in a plane of the slot has a corner to corner width which remains the same for an entire length of the narrowing portion and substantially corresponds to a diameter of the cylindrical portion. The narrowing portion at right angles to the plane of the slot has a corner to corner width which decreases toward the leading end of the body part.

REFERENCES:
patent: 1202159 (1916-10-01), Camden
patent: 3187620 (1965-06-01), Fischer
patent: 4488843 (1984-12-01), Achille

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