Impact-type anchor

Details Impact-type anchor Impact-type anchor

Filed on

1996-08-05

Date issued

1998-06-16

Examiner

Meyers, Steven N.

Patent Class

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

SubClass

Having separate expander means

SubSubClass

Including sleeve and distinct tapered expander

Other Related Categories

411 57, F16B 1306

Type

Patent

Status

active

Patent number

057659796

Description

ABSTRACT:
The impact-type anchor (1) consists of a metal sleeve (2) provided with a throughgoing passage (3) tapering towards a leading end of the sleeve, into which bore an expander body (5) can be driven to expand the impact-type anchor. The throughgoing passage (3) has a rear cylindrical portion provided with an internal thread (4) as well as a tapering portion. So that the metal sleeve can be inexpensively manufactured while providing pull-out values that are the same as those of a metal sleeve made of solid material, the metal sleeve is stamped out of a sheet metal blank and then rolled up to form a sleeve which is joined at its seam. Furthermore, in order to form the tapering internal bore the expandable legs (7) have a first section (7a) that is bent inwards and a second section (7b) that is bent onto the outer face of the first section. The two sections (7a, 7b) resting one against the other are connected non-displaceably to one another, for example, by means of a punched point (9).

REFERENCES:
patent: 1372035 (1921-03-01), Ogden
patent: 1601796 (1926-10-01), Gordon
patent: 1821401 (1931-09-01), Peirce
patent: 2784636 (1957-03-01), Bohmer
patent: 3747468 (1973-07-01), Jansen
patent: 4002100 (1977-01-01), Bucheli
patent: 4642008 (1987-02-01), Herb
patent: 4673321 (1987-06-01), Herb
patent: 4765788 (1988-08-01), Nowak
patent: 4893973 (1990-01-01), Herb
patent: 4904135 (1990-02-01), Barthomeuf

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