Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working fluid passage in inner working or reacting member
Patent
1979-05-04
1981-10-06
Vrablik, John J.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
Non-working fluid passage in inner working or reacting member
418142, 418144, 418181, 418206, F04C 218, F04C 1500
Patent
active
042932904
ABSTRACT:
A positive displacement rotary pump is provided for use in circulating a viscous product at high pressures. The pump includes a housing having a product inlet and a product outlet communicating with an interior cavity. One wall of the cavity is defined by a removable cover. A pair of spaced substantially parallel shafts extends through a wall of the cavity opposite the cover wall. One end of each shaft is supported by the cover. A pair of meshing rotors is locked on the shafts and disposed uniformly within the cavity. The endface of each rotor adjacent the removable cover has a substantial countersunk portion. Bearing means, substantially isolated from the product, is disposed within each rotor endface countersunk portion and supportingly engages a segment of the rotor shaft one end. At least a portion of each bearing means is located between planes defined by the surfaces of the cover and the wall opposite thereto which coacts to form the cavity. Means for supporting the bearing means is removably mounted on the cover.
REFERENCES:
patent: 1834976 (1931-12-01), Schmidt
patent: 2279136 (1942-04-01), Funk
patent: 3133506 (1964-05-01), Luciani
patent: 3417915 (1968-12-01), Granberg
Crepaco, Inc.
Vrablik John J.
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