Connecting piece for mounting a ventilation element in an openin

Details Connecting piece for mounting a ventilation element in an openin Connecting piece for mounting a ventilation element in an openin

1976-06-08

1977-11-15

Callaghan, Thomas F.

Pipe joints or couplings

With fluid pressure seal

With separate, encased pipe-gripping means

285209, 285424, F16L 4100

Patent

active

040583295

ABSTRACT:
A ventilation element for example a valve is anchored in an opening in a ceiling or wall of limited thickness by means of a connecting piece in form of a cylindric pipe with a stop flange and equipped with a plurality of elongated, narrow wings of a resilient material and tangentially projecting from the shell surface and arranged to be pressed towards said surface momentarily during the insertion by a screwing motion of said pipe and then -- after final insertion -- said wings extending radially along one border line against the rear side of said ceiling or wall.

REFERENCES:
patent: 564251 (1896-07-01), Long
patent: 608174 (1898-08-01), Byrnes
patent: 757641 (1904-04-01), Saunders
patent: 1215595 (1917-02-01), Weikert et al.
patent: 1830250 (1931-11-01), Tiefenbacher
patent: 3138660 (1964-06-01), Cejka
patent: 3221572 (1965-12-01), Swick

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