Rotary expansible chamber devices – Interengaging rotating members – Non-parallel axis
Patent
1990-09-20
1992-01-14
Bertsch, Richard A.
Rotary expansible chamber devices
Interengaging rotating members
Non-parallel axis
403374, 418196, F04C 1850
Patent
active
050805681
ABSTRACT:
The positive displacement rotary machine to compress or expand a fluid between a high and a low pressure comprises a screw provided with at least one groove, rotatably mounted in a casing and meshingly cooperating with at least one gaterotor carrying teeth which protrude into the groove to define with the casing a volume for variation of pressure of the fluid. One side of the teeth is being exposed to the high pressure fluid. The high pressure side of the teeth is in sealing proximity with a lip of the casing. The center of the gaterotor is hollow and carries bearings supporting the gaterotor for rotation around a fixed shaft extending through the rotor. Said shaft is secured to the casing in a portion thereof facing the high pressure side of the teeth by a key which has an axis substantially perpendicular to the shaft axis and is pressed against a flat portion provided on the shaft.
REFERENCES:
patent: 939933 (1909-11-01), Trautner
patent: 3106912 (1963-10-01), Kahlert
patent: 3180565 (1965-04-01), Zimmern
patent: 3788784 (1974-01-01), Zimmern
patent: 4036567 (1977-07-01), Sato
patent: 4074957 (1978-02-01), Clarke et al.
patent: 4610612 (1986-09-01), Kocher
patent: 4768750 (1988-09-01), Wilson
Bertsch Richard A.
Cavanaugh David L.
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