Method of forming a pressure free expansion anchorage

Details Method of forming a pressure free expansion anchorage Method of forming a pressure free expansion anchorage

1996-06-24

1997-09-16

Kent, Christopher Todd

Static structures (e.g., buildings)

Assembled in situ-type anchor or tie

Socket type

52711, 5274214, 5274521, 411 82, F16B 3902, E21D 2000

Patent

active

056667795

ABSTRACT:
A method forming a pressure-free expansion anchor in a cylindrical borehole (2) with an undercut (3) in a receiving material forming an anchorage, with an undercut expansion dowel (5) inserted into the borehole. The dowel (5) has an axially-extending threaded rod (9) extending through a sleeve (6) with outwardly displaceable segments (7) on the sleeve for effecting a positive lock in the region of the undercut. The method involves introducing a curable mortar (M) into the region of the undercut, where the mortar forms a bond with the region of the undercut and the displaced elements (7) of the sleeve (6).

REFERENCES:
patent: 4141190 (1979-02-01), Shimada
patent: 4211049 (1980-07-01), Fischer
patent: 4475329 (1984-10-01), Fischer
patent: 4763396 (1988-08-01), Fischer
patent: 4893974 (1990-01-01), Fischer et al.
patent: 5249899 (1993-10-01), Wilson
patent: 5360302 (1994-11-01), MacMartin
patent: 5483781 (1996-01-01), Ernst et al.

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