Roof ventilating aperture seal

Details Roof ventilating aperture seal Roof ventilating aperture seal

1979-04-13

1980-11-04

Makay, Albert J.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

98 72, 98122, 415121G, F24F 702

Patent

active

042312884

ABSTRACT:
A disk, having a larger diameter than the diameter of a roof vent aperture to be closed, supports an annular resilient member in contact with the inner surface of the roof around the aperture. The disk is held in place by a resilient member extending between the disk and a structural portion of a ventilating apparatus.

REFERENCES:
patent: 490027 (1893-01-01), Lochman
patent: 925252 (1909-06-01), Warden
patent: 1450819 (1923-04-01), Sammes
patent: 1601191 (1926-09-01), Simmons
patent: 1720789 (1929-07-01), Heusser
patent: 2504472 (1950-04-01), Alsburg et al.

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