Solenoid Device With Stable Activation
OwnerAnthony FREAKESinventor
Life of this patent
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Abstract
A solenoid may include a core having a junction surface; a plunger having a junction surface and located adjacent to the core; a shading ring located proximate to an interface between the core junction surface and the plunger junction surface, the shading ring having an outside diameter slightly smaller than the diameter of the core, and operable to produce a concentration of magnetic attraction within an annular range of the interface between a center of the interface and a location of the shading ring; wherein a contact region between the core junction surface and the plunger junction surface is substantially smaller than the respective junction surfaces and located proximate to the annular range of the concentration of magnetic attraction.
Claims15
A solenoid comprising:
- a core having a junction surface;
- a plunger assembly including a plunger having a junction surface and a plunger pot having a junction surface, the junction surfaces meeting at an interface within the plunger assembly;
- a shading ring located proximate to the interface between the junction surfaces, the shading ring having an outside diameter slightly smaller than the diameter of the core and operable to produce a concentration of magnetic attraction at the interface between the plunger junction surface and the plunger pot junction surface within an annular range of the interface between a center of the interface and a radial position on the interface adjacent to the shading ring,
- wherein a contact region between the plunger junction surface and the plunger pot junction surface is substantially smaller than the respective junction surfaces and located proximate to the annular range of the concentration of magnetic attraction.
A solenoid comprising:
- a core assembly fixed within the solenoid and having a junction surface wherein the core assembly comprises a core and a plunger pot, and wherein the core assembly junction surface is a plunger pot junction surface;
- a plunger moveable within the solenoid and having a junction surface;
- a shading ring located proximate to an interface between the core assembly junction surface and the plunger junction surface, the shading ring having an outside diameter slightly smaller than the diameter of the core and operable to produce a concentration of magnetic attraction at the interface between the plunger junction surface and the core assembly junction surface within an annular range of the interface between a center of the interface and a radial position of an inner diameter of the shading ring;
- wherein a contact region between the plunger junction surface and the core assembly junction surface is substantially smaller than the respective junction surfaces and located proximate to the annular range of the concentration of magnetic attraction.
A solenoid comprising:
- a core;
- and
- a plunger,
- wherein at least one of the core and the plunger includes hardened ferric material.
Dependencies are inferred from the claim text.