Volumetric type flowmeter having circular and involute tooth sha

Details Volumetric type flowmeter having circular and involute tooth sha Volumetric type flowmeter having circular and involute tooth sha

1978-04-14

1980-07-01

Vrablik, John J.

Rotary expansible chamber devices

Working chamber surface expressed mathematically

418201, 73261, G01F 310, F01C 116, F04C 110

Patent

active

042104106

ABSTRACT:
A volumetric type rotary machine has a pair of rotors each of which has a plurality of teeth comprising tooth crests and valleys alternately disposed at equal angular intervals around the rotor in profile in a cross-sectional plane thereof perpendicular to the rotational axis thereof, which rotors are adapted to rotate in mutually opposite directions in mutually intermeshed state. In each rotor as viewed in the profile in the cross-sectional plane, the tooth crests and valleys respectively have convex and concave arcuate parts over specific peripheral extents thereof centered on the vertices and nadirs thereof, respectively, and remainder parts of involute curve shape between the extremities of the arcuate parts.

REFERENCES:
patent: 2159744 (1939-05-01), Maglott
patent: 2193671 (1940-03-01), Dolza
patent: 2705922 (1955-04-01), Rathman
patent: 2843094 (1958-07-01), Berck
patent: 3164099 (1965-01-01), Iyoi

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