Mining or in situ disintegration of hard material – Hard material disintegrating machines – With mine roof-supporting means
Patent
1985-02-04
1986-12-16
Novosad, Stephen J.
Mining or in situ disintegration of hard material
Hard material disintegrating machines
With mine roof-supporting means
299 56, 299 64, 299 68, E21D 908, E21D 912
Patent
active
046292551
ABSTRACT:
A tunneling apparatus has a lateral shield having a front end normally engaged longitudinally against a tunnel end face, a digging tool at the front end of the shield and engageable with the tunnel face, and a drive for displacing the tool and digging the tunnel face. A transverse pressure wall across the shield forms a pressurizable chamber inside the front end of the shield around the tool at the tunnel face. A conveyor tube longitudinally traverses and has a front end open ahead of the wall in the chamber and adapted to receive material freed from the tunnel face by the digging tool. An auger can be rotated in the tube to displace freed material back in it from its front end to its rear end. A chute opens upward into the rear end of the conveyor tube to receive material therefrom and a pump tube extends longitudinally back from the chute. A piston pump between the chute and the pump tube can displace material from the chute back in the tube.
REFERENCES:
patent: 2540670 (1951-02-01), Hoenecke
patent: 3042229 (1962-07-01), Winter
patent: 3260548 (1966-07-01), Reichl
patent: 3334945 (1967-08-01), Bartlett
patent: 3995734 (1976-12-01), Berg, Jr.
patent: 4082368 (1978-04-01), Funk
patent: 4165129 (1979-08-01), Sugimoto et al.
patent: 4406220 (1983-09-01), Bergman
patent: 4456305 (1984-06-01), Yoshikawa
Dubno Herbert
Goodwin Michael A.
Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
Novosad Stephen J.
Ross Karl F.
LandOfFree
Tunneling machine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tunneling machine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunneling machine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-241776