Clamping device, especially for rock or concrete drills

Details Clamping device, especially for rock or concrete drills Clamping device, especially for rock or concrete drills

1976-08-16

1977-10-25

Simpson, Othell M.

Chucks or sockets

Expanding

Collet type

242 682, B23B 2700

Patent

active

040553531

ABSTRACT:
The present clamping device is intended for releasably connecting a driving member, such as a shaft driving a drill bit, in a force transmitting manner to a tubular driven member, such as the boring pipe or tube. A clamping body fits into the free end of the tubular member in a centering manner. The drill shaft may be secured to the centering, clamping body, for example, by a threading. The centering body has a ring groove which receives a clamping ring having a wedging slot extending axially through the clamping ring. A wedge may be forced into the wedging slot by means of a screw, whereby the clamping ring is expanded radially outwardly to connect the centering clamping body to the tubular member.

REFERENCES:
patent: 2749133 (1956-06-01), Rich
patent: 2830821 (1958-04-01), Bystrom
patent: 2992787 (1961-07-01), Craig
patent: 3345006 (1967-10-01), Geen
patent: 4000666 (1977-01-01), Schulz

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