Solid material comminution or disintegration – Apparatus – With automatic control
Patent
1976-01-30
1977-03-29
Custer, Jr., Granville Y.
Solid material comminution or disintegration
Apparatus
With automatic control
241 4602, 52 20, 137 13, B02C 1318
Patent
active
040144755
ABSTRACT:
A sewage grinder pump and access manway assemblage comprising a lower collection tank having a watertight and airtight cover and at least one sewage grinder pump unit suspended from a top cover plate for the collection tank and extending into the tank for grinding and pumping under pressure sewage collected in the tank. An integral manway housing member fabricated from fiberglass or other similar non-corrosive material is mounted over the collection tank and has enough enclosed space to accommodate a workman. The bottom cross-sectional dimensions of the manway housing member are slightly less than the cross-sectional dimensions of the collection tank. The collection tank has an upper peripheral wall section which coacts with a corresponding lower peripheral wall section of the manway housing member for securing the manway housing member and the collection tank together in a substantially airtight and watertight manner. A substantially weatherproof, removeable top cover closes the top end of the manway housing member with the removeable top cover being vented to a source of atmospheric pressure while in place in a manner such that it does not impair the weatherproof characteristics of the enclosure. The sewage grinder pump unit is suspended from a top cover plate thru an enlarged opening in the top of the collection tank with the top cover plate forming a substantially watertight and airtight closure over the collection tank. A breather vent pipe is connected to the interior of the control housing of the grinder pump unit and extends to the top of the manway housing for venting the control housing to a source of atmospheric pressure.
REFERENCES:
patent: R28104 (1974-08-01), Grace
patent: 996956 (1911-07-01), Walcott
patent: 3375788 (1968-04-01), Solas et al.
patent: 3552408 (1971-01-01), Dowdican
patent: 3672103 (1972-06-01), Kost
patent: 3904131 (1975-09-01), Farrell, Jr. et al.
patent: 3938285 (1976-02-01), Gilba
Grace Richard C.
Rochow Kenneth H.
Custer, Jr. Granville Y.
Environment One Corporation
Helzer Charles W.
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