Measuring and testing – Volume or rate of flow – Expansible chamber
Patent
1996-07-16
1998-10-20
Chilcot, Richard
Measuring and testing
Volume or rate of flow
Expansible chamber
G01F 332
Patent
active
058248960
ABSTRACT:
The present invention provides a flow measuring machine measuring a flowing amount of fluid or gas, and more particularly to a measure driving apparatus for converting a flowing amount into a mechanical momentum, by wave vibration and for transferring the mechanical momentum to a signal generating apparatus, and a measure signal generating apparatus for transferring a turning effect of a rotor in a non-contact system to a sender to output a turning signal. The machine of the present invention more precisely converts the flowing force of the fluid or gas into a vibration force of wave motion of the rotor, thereby getting a precise measure. Further, since the rotor performs a line contact rolling motion with a housing, a driving loss due to friction can be reduced. Also since the rotor can be supported by a bearing, a pressure loss of the fluid due to rotor tare can be reduced, and since the flowing force of the flowing amount is transferred to an outer circumferential surface of the rotor right away, a degree of precision doesn't fall in spite of variation based a flowing speed. Furthermore, since a plate shape of the rotor is used, there is an advantage that the precise measure is available because the force of the fluid operates largely, plus a small size. The signal generating apparatus of the present machine transmits the rotating number in non-contact system, and thus has an effect that the fluid leakage can be removed by closing tightly the body of the machine. Accordingly, an operating pressure of the body inside gets constant to thereby provide an advantage of the precise measuring degree.
REFERENCES:
patent: 528038 (1894-10-01), Steed
patent: 1889190 (1932-11-01), Brandl et al.
patent: 5495756 (1996-03-01), Robitaille et al.
patent: 5567876 (1996-10-01), Holmes-Higgin et al.
Chilcot Richard
Thompson Jewel
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