Baths – closets – sinks – and spittoons – Dry closets – With heating meas
Patent
1975-03-31
1978-02-14
Aegerter, Richard E.
Baths, closets, sinks, and spittoons
Dry closets
With heating meas
4211, 137357, 137588, 285153, E03D 904, F16L 4100
Patent
active
040730182
ABSTRACT:
An internal back vent system which includes a single vertical stack divided by concentric vertically disposed vent and drain pipes into a main central drain or waste passageway surrounded by an annular vent passageway. Adjacent the floors to be serviced, the vertical stack is provided with manifold assemblies which interconnect the ends of branch waste pipes to the main drain passageway while venting each branch pipe to the vent passageway. The manifold includes a plurality of radially extending connector pipes all communicating with the main drain passageway. These outwardly extending connector pipes are respectively connected to the branch waste pipes which form the drains of the various fixtures within the building. At each level, a corresponding number of upstanding, relatively short, vent pipes are disposed, circumferentially spaced, in the annular vent passageway and are respectively connected by their lower ends to the connector pipes. Couplings having flexible gaskets surrounded by shields join the various butt connected pipes. A funnel shaped discharge member connects both the vent passageway and the drain passageway to the main drain.
REFERENCES:
patent: 922311 (1909-05-01), Morton
patent: 1700230 (1929-01-01), Luff
patent: 2067078 (1937-01-01), Faber
patent: 2719308 (1955-10-01), Choate
patent: 2795798 (1957-06-01), Boggess et al.
patent: 3750697 (1973-08-01), Kump
Aegerter Richard E.
Levy Stuart S.
McKenney's, Inc.
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