Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1983-08-15
1985-07-30
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
52704, 405259, E21D 2002
Patent
active
045318611
ABSTRACT:
An adhesively secured anchor rod for installation in a bore of a concrete base, pad, or the like, and comprising a bar having a first threaded portion of a standard thread provided at one end thereof, a second threaded portion of a coarse or coil thread provided at the opposite end thereof, and an intermediate threaded portion of a coarse or coil thread interposed therebetween, the length of the first threaded portion being selected to provide a gauge for determining the depth of embedding for the anchor rod within the concrete base, and the direction of the threads of the second threaded portion and intermediate portion being reversed with respect to each other for facilitating mixing of the components of an adhesive material placed within the bore and increasing resistance of the anchor rod against accidental "backing out" of the rod from the bore subsequent to installation thereof, the outer end of the second threaded portion being provided with recesses for facilitating the entering of the adhesive material into the threaded portion during the mixing thereof as the anchor rod is inserted into the bore in a twisting and downward movement.
REFERENCES:
patent: 3222873 (1965-12-01), Williams
patent: 3693359 (1972-09-01), Karara
patent: 3940941 (1976-03-01), Libert et al.
patent: 4295761 (1981-10-01), Hansen
patent: 4372708 (1983-02-01), Bower et al.
patent: 4386877 (1983-06-01), McDowell
patent: 4393638 (1983-07-01), Sell et al.
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