Mechanical expansion anchor shell

Details Mechanical expansion anchor shell Mechanical expansion anchor shell

1990-03-19

1991-07-23

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405259, 411 57, 411 73, E21D 2002

Patent

active

050339109

ABSTRACT:
An improved, radially expansible shell for use in a mechanical expansion anchor and an anchoring system including such a shell in combination with a resin grouting mix, in a drill hole of predetermined diameter. The shell includes a plurality of leaf portions having internal surfaces for engagement by a tapered camming plug as the shell is expanded, external surfaces having a maximum diameter less than that of the drill hole, and side edges. A row of tapered teeth extends outwardly from the external surface of each leaf along one of the side edges thereof. The distance from the central axis of the shell to the crests of the teeth is substantially equal to the radius of the drill hole. The teeth frictionally engage the drill hole wall to retard rotation of the shell and ensure the desired expansion. When the anchor is used with a conventional, two-compartment resin package, the resin components may flow around the shell into the annular space between the external surfaces of the leaves and the drill hole wall.

REFERENCES:
patent: 4360301 (1982-11-01), Mosberger
patent: 4437795 (1984-03-01), White
patent: 4764055 (1988-08-01), Clark et al.
patent: 4806053 (1989-02-01), Herb

Affiliated with

Also associated with

Rating

Mechanical expansion anchor shell does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mechanical expansion anchor shell, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanical expansion anchor shell will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-429415