Method of and a device for forming a fluidtight duct transition

Details Method of and a device for forming a fluidtight duct transition Method of and a device for forming a fluidtight duct transition

1975-05-01

1977-03-01

Taylor, Dennis L.

61 86, 61101, F16L 104, E02D 2738

Patent

active

040095843

ABSTRACT:
In order to pass a duct across a wall between two spaces in which different pressures prevail, there is formed in said wall a passage which is temporarily closed off by means of a panel applied in position by the pressure, whereafter, at the time at which the duct is to be passed across the wall, the pressures in the two spaces are equalized making it possible to remove the temporary closure, the duct is introduced through the passage, a temporary seal between the passage and the exterior of the duct is formed, the pressure difference between the two spaces is restored, and a final seal between the passage and the exterior of the duct is created.

REFERENCES:
patent: 2114038 (1938-04-01), Updegraff
patent: 3032835 (1962-05-01), Saar et al.
patent: 3482410 (1969-12-01), Roesky et al.
patent: 3482410 (1969-12-01), Roesky et al.
patent: 3585805 (1971-06-01), Vincent
patent: 3795115 (1974-03-01), Bergquist et al.
patent: 3834169 (1974-09-01), Abbott
patent: 3899894 (1975-08-01), Liautaud

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