Static structures (e.g. – buildings) – Enclosure or cover – with supplemental fluid-guiding port... – Attic vent
Patent
1990-07-23
1991-04-30
Scherbel, David A.
Static structures (e.g., buildings)
Enclosure or cover, with supplemental fluid-guiding port...
Attic vent
52 48, 52219, 285 42, 285 44, E04H 1228
Patent
active
050107003
ABSTRACT:
A roof jack or vent seal which is unitarily vacuum formed of polypropylene synthetic rubber polymer and a U.V. stabilized pigment and which has a planar roof covering with a central upstanding frusto-conical section including stepped graduated portions, with the region between each graduated portion capable of flexing to accommodate differences in the roof pitch.
REFERENCES:
patent: 1317574 (1919-09-01), Grosvold
patent: 3731952 (1973-05-01), Elwart
patent: 4333660 (1982-06-01), Cupit
patent: 4526407 (1985-07-01), Kifer
patent: 4563847 (1986-01-01), Hasty
patent: 4570943 (1986-02-01), Houseman et al.
Scherbel David A.
Watson Linda J.
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