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Magnetic flow control valve

  • US 4,782,860 A
  • Filed: 09/23/1987
  • Issued: 11/08/1988
  • Est. Priority Date: 06/15/1984
  • Status: Expired due to Term
First Claim
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1. A magnetic flow control valve including a valve housing consisting of a housing body and a cover closing an opening of said housing body and having an inlet and an outlet for pressurized fluid, a valve seat member located in said housing and having a valve seat in the form of a substantially conical inner surface, a substantially spherical valve body to be seated on said valve seat in said housing, a throttle adjusting plate made of a magnetic material arranged in the valve housing on opposite side of the valve seat with respect to said valve body and supported in said valve housing and shiftable toward and away from said valve seat, and electromagnet means for shifting said throttle adjusting plate toward and away from said valve seat to control flow rate of said pressurized fluid by changing electric current supplied to the electromagnet, said throttle adjusting plate further comprising elastic cushioning means on a side opposite to said valve body, for absorbing inertia forces of said throttle adjusting plate as the flow rate of said pressurized fluid is changed.

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