Apparatus for cutting recessed grooves into concrete and rock ma

Details Apparatus for cutting recessed grooves into concrete and rock ma Apparatus for cutting recessed grooves into concrete and rock ma

1991-10-11

1993-01-19

Bagnell, David J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Floor-working

82 12, 175292, 408150, 409200, E21B 1032

Patent

active

051802090

ABSTRACT:
Recessed grooves are cut into bore hole walls of concrete or rock materials for the purpose of interconnecting two components of such materials at an interface between these components. These recessed grooves are cut by material removing tools which can be pressed radially outwardly, while a drive shaft simultaneously rotates these tools. For this purpose, an axial movement of an adjustment body is converted into a tilting movement of pivotable shafts which carry the material removable tools, whereby the adjustment body is moved linearly by a hydraulic lifting device. The material removing tools extend radially away from the lower ends of the pivotable shaft. The common adjustment movement of all of the pivotable shafts takes place independently of the rotation of the driven shaft.

REFERENCES:
patent: 1998015 (1935-04-01), Heltzel
patent: 3422705 (1969-01-01), Nahodil et al.
patent: 4191489 (1980-03-01), Ray et al.
patent: 4874046 (1989-10-01), Hurd

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