Expanding plug

Details Expanding plug Expanding plug

1993-01-13

1993-10-05

Lindsey, Rodney M.

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

Having separate expander means

Including sleeve and distinct tapered expander

411 55, F16B 1306

Patent

active

052498972

ABSTRACT:
An expanding plug comprises in usual manner an expanding sleeve, an expanding screw and an expanding cone which serves to expand the expanding sleeve and which can be pulled into the expanding sleeve by means of the expanding screw. So as to reduce the material need for the expanding cone and the manufacturing expenditure, the expanding cone is bent from metal sheet. Its edge surfaces of its wall limiting a joint gap extend in the direction to the central longitudinal axis and tangentially to the latter bear unconnected and flush against each other. The expanding cone formed with relatively thick walls comprises hardened surface regions and an unhardened basic region.

REFERENCES:
patent: 1365945 (1921-01-01), Ogden
patent: 2075952 (1937-04-01), McIntosh
patent: 4481702 (1984-11-01), Mitchell
patent: 4602902 (1986-07-01), Herb
patent: 5112174 (1992-05-01), Gerhard

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