Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Bulged by axially contracting ends
Reexamination Certificate
2005-01-04
2005-01-04
Wilson, Neill (Department: 3679)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Bulged by axially contracting ends
C411S042000, C411S080100
Reexamination Certificate
active
06837658
ABSTRACT:
A plug for fixing to hollow and to solid building materials has a plug body having a plurality of longitudinally extending expansible limbs that are expansible by screwing in of an expansion screw, the expansible limbs having a rear end and a leading end, a sleeve-shaped plug end which joins the expansible limbs with one another at the rear end and is formed so that the expansion screw is insertable through the plug end, a sleeve-shaped plug tip which joins the expansible sleeves with one another at the leading end and which is formed so that the expansion screw is screwable into the plug tip, and a stretchable material which joins the expansible limbs with one another circumferentially and which is pierced by several helically arranged slots.
REFERENCES:
patent: 3942407 (1976-03-01), Mortensen
patent: 4861206 (1989-08-01), Riedel
patent: 6164884 (2000-12-01), Mayr
patent: 6558094 (2003-05-01), Nehl
patent: 29 47 752 (1981-07-01), None
patent: 196 00 931 (1997-07-01), None
patent: 198 55 139 (2000-05-01), None
fischerwerke Artur Fischer GmbH & Co. KG
Striker Michael J.
Wilson Neill
LandOfFree
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