Tunnel lining fastening devices

Details Tunnel lining fastening devices Tunnel lining fastening devices

F - Mech Eng,Light,Heat,Weapons

16

B

85/33, 61/63

F16B 17/00 (2006.01) E21D 11/08 (2006.01) F16B 13/12 (2006.01)

Patent

CA 1226155

C A N A D A ABSTRACT OF THE DISCLOSURE "TUNNEL LINING FASTENING DEVICES" The disclosure relates to a two part cylindrical collet having a head at one end thereof with an encircling groove around the head in which a ring is located to hold the parts of the collet together. The collet has a tapered bore which receives a tapered pin to expand the collet. In order to hold the pin in the collet, the bore is formed with a succession of annular steps along its length and the pin is formed with a similar series of annular steps to inter-engage with the steps.

442706

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