Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1977-08-04
1978-12-12
Holko, Thomas J.
Hydraulic and earth engineering
Earth treatment or control
Chemical
52698, 85 63, 151 417, E21D 2100, F16B 1300
Patent
active
041290070
ABSTRACT:
An anchor device to be used in a hole with a bolt in connection with a cartridge containing a hardenable resin or other fast setting material. The bolt has a threaded shank and at least one lug means extending from the threaded shank. The anchor is an elongate cylindrical shell with a central passage to receive the bolt, thereby forming an anchor-bolt unit. The anchor has a first open end and a second closed end and also has an internally threaded portion for receiving the bolt. The bolt extends outwardly at the first end with the lug means of the bolt being located adjacent the closed second end of the anchor. The anchor-bolt unit is inserted in the hole after the cartridge has been inserted in the hole whereby when the bolt is rotated in a first sense there is a tendency to unthread the bolt from the anchor, but the bolt lug prevents complete withdrawal and instead the anchor is rotated to expel and mix the contents of the cartridge. After setting of the resin the bolt is rotated in a second sense so that the bolt penetrates into the anchor to tension the bolt.
REFERENCES:
patent: 1045562 (1912-11-01), Kennedy
patent: 1062534 (1913-05-01), Butler
patent: 1788750 (1931-01-01), Snyder
patent: 2403541 (1946-07-01), Molat
patent: 2592791 (1952-04-01), Coberly
patent: 3877235 (1975-04-01), Hill
patent: 3896627 (1975-07-01), Brown
patent: 4023373 (1977-05-01), Hipkins
patent: 4051683 (1977-10-01), Koval
Celtite, Inc.
Holko Thomas J.
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