Valve provided with a measuring instrument and intended for a moving medium
Patent 4337655 Issued on July 6, 1982. Estimated Expiration Date: 
September 29, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 29, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1152952 3452593 3617713 3636767 3729996 3795144 Integrating calorimeter Heat meters Patent #: 4250747 InventorsApplicationNo. 06/191442 filed on 09/29/1980US Classes:73/861.03, Digital374/41, Signals combined electrically73/198, Combined73/861.77Using rotating member with particular electrical output or circuitExaminersPrimary: Goldstein, HerbertAttorney, Agent or FirmInternational ClassesG01F 1/075 (20060101)G01F 1/115 (20060101) G01F 1/05 (20060101) Foreign Application Priority Data1976-09-09 SEAbstractA valve unit for a flowing medium is combined with an electrical measuring system to provide measurement of the rate of flow of the medium. The valve unit is connected to a propeller-type rotor disposed in a conduit which communicates with the valve. The rotor incorporates a permanent magnet in at least one vane thereof and the measuring system includes a magnetic pulse generator which senses the magnetic field produced by the magnet and generates a corresponding train of pulses during the rotation of the rotor. An amplifier-differentiator connected to the pulse generator produces an output in accordance with the derivative of the pulses so as to provide an indication of the rate of flow. | |
