Double helical flowmeter

Details Double helical flowmeter Double helical flowmeter

1994-01-24

1995-05-16

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Expansible chamber

G01F 310

Patent

active

054150418

ABSTRACT:
A high volume, low RPM, low noise, low wear and long life flowmeter uses inter-engaging double helical four-lobe rotors. The meter is made with ball bearings or bearingless. The double helical nature of the teeth provides no axial loads and no side loads or end loads, and uses true gear designs with very large pockets. A high contact ratio is provided with only four teeth, reducing and eliminating noise and pulsing output, increasing working volume and decreasing speed and wear.

REFERENCES:
patent: 1233599 (1917-07-01), Nuebling
patent: 2079083 (1937-05-01), Montelius
patent: 2319374 (1943-05-01), Ungar
patent: 2611323 (1952-09-01), Digney
patent: 2756684 (1956-07-01), Renzo
patent: 2982221 (1961-05-01), Whitfield
patent: 4210410 (1980-07-01), Ohtani
patent: 4224015 (1980-09-01), Nagata
patent: 4329130 (1982-05-01), Nagata et al.
patent: 4641522 (1987-02-01), Lopresti
patent: 5184519 (1993-02-01), Ciarelli et al.
patent: 5269668 (1993-12-01), Lew et al.

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