Expanded – threaded – driven – headed – tool-deformed – or locked-thr – With means to indicate application of predetermined...
Patent
1985-05-07
1987-07-21
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
With means to indicate application of predetermined...
411 19, 411 57, 411535, F16B 3104
Patent
active
046814930
ABSTRACT:
A dowel assembly to be anchored in a borehole in a receiving material includes a container positioned around the axis of the borehole and located between an abutment at one end of the dowel assembly and the receiving material into which the assembly is inserted. The container is formed of two parts with one part being telescopically displaceable into the other. An hydraulic mass capable of expanding when mixed with a reaction liquid is filled into the container. The expandable hydraulic mass maintains the force acting on the dowel assembly when there is relaxation of the force originally generated between the dowel assembly and the receiving material. The container has openings through which the reaction liquid can pass into contact with the hydraulic mass. The hydraulic mass can be activated by immersing the container in water.
REFERENCES:
patent: 2571265 (1951-10-01), Lueufven
patent: 3021747 (1962-02-01), Garrett
patent: 3462180 (1969-08-01), Bunyan
patent: 3521454 (1970-07-01), Dodds
patent: 3604306 (1971-09-01), Dehholm
patent: 4182189 (1980-01-01), Deck et al.
Kousek Heinz
Maier Elmar
Vollmer Helmut
Hilti Aktiengesellschaft
Holko Thomas J.
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