Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having separate expander means – Including sleeve and distinct tapered expander
Reexamination Certificate
2008-02-29
2010-06-29
Saether, Flemming (Department: 3677)
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having separate expander means
Including sleeve and distinct tapered expander
C411S069000, C411S072000
Reexamination Certificate
active
07744320
ABSTRACT:
A wedge-type anchor assembly, capable of meeting cracked concrete testing standards, comprises an anchor bolt component and a substantially C-shaped expansion sleeve component annularly disposed about the anchor bolt component. A plurality of annular grooves, threads, or teeth are disposed only about the forward end portion of the expansion sleeve component, as opposed to throughout the entire axial length thereof, so that when the anchor bolt component is moved axially through the expansion sleeve component, the maximum interference area (M.I.A.) and maximum interference volume (M.I.V.) can be generated between the anchor bolt component and the expansion sleeve component in a controlled and predictable manner, as well as between the expansion sleeve component and the internal peripheral side wall portions of a concrete substrate or substructure can be generated so as to enhance pull-out resistance and reliability of the anchor assembly within the concrete substructure or substrate. The expansion sleeve component may be plated with a tin-zinc (Sn—Zn) composition, and the rear end portion of the expansion sleeve component may have a larger diametrical extent than the forward end portion of the expansion sleeve component so as to enhance pull-out resistance.
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Tin-Zinc Plating, Budman et al. , Metal Finishing, Sep. 1995.
Broomfield Donald
Kobetsky Robert G.
Reiter Matthew J.
Starozhitsky Michael
Illinois Tool Works Inc.
Law Offices Of Steven W. Weinrieb
Saether Flemming
LandOfFree
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