Sealing means

Details Sealing means Sealing means

1974-12-30

1976-09-14

Taylor, Dennis L.

61 42, E01G 516

Patent

active

039799204

ABSTRACT:
A sealing means is provided for sealing against passage of liquid between two surfaces, as between the tail-piece of a tunnelling machine and the tunnel lining to prevent ingress of working liquid into the tunnel workings, said sealing means comprising a mount for flexible fibers projecting brush-like therefrom, the mount being fixed in substantially liquid-tight manner to one said surface, such as that of a tail-piece, and arranged to permit said fibers to extend into contact with the second surface, such as that of the tunnel lining. The free ends of at least a portion of the fibers preferably extend parallel with the second surface and in contact with one another and/or that surface. Flexible sheeting may be arranged in combination with the fibers substantially to close off said space and inflatable air-bag means may be interposed between the free ends of the fibers (fiber/sheeting combination) and the first surface to increase the pressure of contact between the fibers and the first surface.

REFERENCES:
patent: 734265 (1903-07-01), Hough
patent: 1296312 (1919-03-01), O'Rourke
patent: 3002253 (1961-10-01), Kessler
patent: 3410098 (1968-11-01), Winberg
patent: 3494136 (1970-02-01), Wilms
patent: 3616137 (1971-10-01), Horton
patent: 3788087 (1974-01-01), Patin

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