Fluid tight movable passage

Details Fluid tight movable passage Fluid tight movable passage

1975-11-12

1977-08-30

Truhe, J. V.

Electric heating

Metal heating

By arc

219 72, B23K 900

Patent

active

040456471

ABSTRACT:
The invention relates to a device for displacing a fluid-tight passage along a pre-determined rectilinear path on a wall separating two media, the device comprising: a flexible coupling adapted to be opened and closed longitudinally by progressive deformation and covering the rectilinear path, the coupling being constituted by an assembly of two identical L-shaped bands each having two faces perpendicular to each other, applied against each other by one face along a plane perpendicular to the wall and applied against said wall by their other faces arranged in line with each other, a chamber comprising a mobile fluid-tight passage on said flexible coupling, astride the assembly of the two faces of the bands applied against each other and inside which the coupling is opened and then re-closed; the chamber is not directly supported on the wall and its fluid-tightness is maintained during its displacement on the coupling, means being provided for opening and closing said coupling inside the chamber and for displacing the chamber with respect to the coupling, profiled ribs forming guides on the coupling and co-operating with grooves in the mobile chamber and also serving to position the coupling in the chamber, the latter further comprising a guard-ring delimited by fluid-tight joints in the chamber supported by the two faces of the coupling and by the ribs of the coupling sliding inside the chamber.

REFERENCES:
patent: 3626142 (1971-12-01), King
patent: 3719791 (1973-03-01), Peyrot
patent: 3748432 (1973-07-01), Bosworth et al.
patent: 3835291 (1974-09-01), Sciaky

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