Perkins Engines Company Limited

Daniel Charmbury Ward

Paul John Smith

Iain Rookes

An electro-magnetically operated valve which has a pole piece, an armature member mounted for movement relative to the pole piece, and an electro-magnetic device associated with the pole piece for effecting movement of the armature member between a first position spaced from the pole piece to a second position where the armature member contacts the pole piece, where at least a portion of the armature member and/or the pole piece has in or on a coating or layer of material having a higher mechanical hardness or a higher magnetic permeability than the material of the armature and/or pole piece.

Growing community of inventors

Bath, United Kingdom

Daniel Charmbury Ward