Anchoring unit for use in structures with internal open spaces

Details Anchoring unit for use in structures with internal open spaces Anchoring unit for use in structures with internal open spaces

1988-04-13

1989-06-06

Smith, Gary L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Including settable material

Adhesive encapsulated

411258, 405260, F16B 3902

Patent

active

048367290

ABSTRACT:
An anchoring unit is made up of a screen-type sleeve and an insert sleeve to be placed into the screen-type sleeve. The unit is anchored by a hardenable mass. After the screen-type sleeve is inserted into a borehole in a structure with internal open spaces, the hardenable mass is injected into the screen-type sleeve. When the insert sleeve is placed into the screen-type sleeve, the hardenable mass is forced outwardy through openings in the screen-type sleeve into the open spaces in the structure. The two sleeves each have an inside surface and an outside surface with alternating projecting surfaces and recessed surfaces to facilitate a positive lock with the hardenable mass. Further, the alternating surfaces improve the distribution of the hardenable mass. Preferably, the two sleeves are formed of a plastics material. A fastening element can be inserted into the insert sleeve for securing an object to the structure.

REFERENCES:
patent: 3901039 (1975-08-01), Lundkvist
patent: 4063582 (1977-12-01), Fischer
patent: 4712957 (1987-12-01), Edwards et al.
Brochure entitled "Applications and Products", German Hilti GmbH, 1985, p. 43.

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