Solenoid device with stable activation
OwnerAnthony Freakesinventor
Life of this patent
Estimating the term…
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.
Claims19
A solenoid comprising:
- a core having a junction surface;
- a plunger assembly including a plunger having a junction surface comprising at least one of:
- a) a concave facing with a relief at a center thereof;
- and
- b) a relief along a periphery thereof, and a plunger pot having a junction surface which comprises a substantially flat or convex conical facing, the junction surfaces meeting at an interface within the plunger assembly and having a gap formed between the substantially flat or convex conical facing and concave facing;
- 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 having a junction surface:
- a plunger assembly including a plunger comprising a plunger junction surface comprising a substantially flat or convex conical facing and a plunger pot comprising a junction surface comprising at least one of:
- a) a concave shape with a relief at a center thereof;
- and
- b) a relief along a periphery thereof, the junction surfaces meeting at an interface within the plunger assembly and having a gap formed between the substantially flat or convex conical facing and concave facing;
- 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.
Dependencies are inferred from the claim text.