US 5,350,153 A · Core design for electromagnetically actuated valve

Abstract

An improved electromagnetically actuated valve is disclosed. The improved valve design includes a layer of structurally stable, non-magnetic material, preferably Kapton or Chrome, disposed intermediate the core element and the electromagnetic element of the valve, and a core element and electromagnetic element fabricated from a high electrical resistive iron material. The layer of non-magnetic structurally stable material and high resistance core element serve to eliminate the hysteresis effect in the magnetic force of the valve. The core element may also include radially extending or axially extending perforations through the core element. The axial and radial perforations serve to reduce the weight of the core design and the axial perforations serve to reduce the effect of the air spring created in the gap as the core element approaches the electromagnetic element during operation of the valve.

Claims16

Dependent claims

In an electromagnetically actuated valve having at least one electromagnetic assembly including an electromagnetic element and a coil disposed within the electromagnetic element, and at least one core element defining an upper surface, a lower surface, an outer edge surface and a central axis and being biased in an initial spaced apart relationship from the electromagnetic element, an improvement comprising:

a layer of structurally stable, non-magnetic material disposed intermediate the electromagnetic element and the core element;
and,
at least one radial aperture extending radially at least partially through the core element intermediate the upper surface and the lower surface.

Dependencies are inferred from the claim text.

Core design for electromagnetically actuated valve

Life of this patent

Core design for electromagnetically actuated valve

Life of this patent

Abstract

Claims16