The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1987
Filed:
May. 07, 1985
Hilti Aktiengesellschaft, , US;
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.