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US 6,188,151 B1Granted
Magnet assembly with reciprocating core member and associated method of operation
AssigneeRobotech, Inc.
InventorsDavid Livshits, Alexander Mostovoy, Georgy Kataev, Victor Shliakheckiy
Life of this patent
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Abstract
An electromagnetic assembly includes a casing, a solenoid disposed inside the casing, a stationary magnetic core, and a movable magnetic core. The stationary magnetic core is disposed at least partially inside the solenoid and is fixed relative to the solenoid and the casing, while the movable magnetic core is disposed for reciprocation partially inside the solenoid along an axis. The stationary magnetic core, the movable magnetic core, the solenoid, and the casing have rectangular or square cross-sections in planes oriented essentially perpendicularly to the axis.
Claims61
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said solenoid having a solenoid length and said casing having a symmetry plane oriented transversely to said axis,
- said stationary magnetic core being spaced from said symmetry plane by a distance of approximately one quarter of said solenoid length less 1 to 4 mm.
4 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said movable magnetic core having an inner end always disposed inside said solenoid and said casing and an outer end always located outside said solenoid and said casing,
- said casing having a casing length, said movable magnetic core having a length greater than one-half of said casing length,
- said casing having a symmetry plane oriented transversely to said axis, said casing having a mouth opening traversed by said movable magnetic core, said movable magnetic core having a reciprocation stroke with an extreme position where said inner end is located on a side of said symmetry plane opposite said mouth opening.
5 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said stationary magnetic core and said movable magnetic core having rectangular cross-sections in planes oriented essentially perpendicularly to said axis,
- said casing and said solenoid also having rectangular cross-sections in said planes oriented essentially perpendicularly to said axis.
4 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis;
- and
- a current source operatively connected to said solenoid, said movable magnetic core being operatively connected to a load, whereby the assembly acts as an motor,
- said current source including means for initiating an energization of said solenoid when said movable magnetic core is located at a maximum distance from said stationary magnetic core.
4 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis;
- and
- means for restoring said movable magnetic core from a maximally retracted position to a maximally extended position, said movable magnetic core having a maximum proportion of its length located inside said solenoid and said casing in said maximally retracted position and a minimum proportion of its length located inside said solenoid and said casing in said maximally extended position,
- said means for restoring including a push rod extending along said axis through said stationary magnetic core.
4 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis, and
- means for supplying to said solenoid an electrical potential in the form of a series of transient electrical pulses having a phase synchronized with a reciprocating stroke of said movable magnetic core.
2 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis;
- and
- an electrical circuit operatively connected to said solenoid for energizing same, said circuit including an additional inductor with a variable inductance.
3 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said solenoid including a coil holder or spool of hard polyurethane vacuum plated with a layer of aluminum, a layer of zinc, and a layer of nickel, said solenoid having a cavity surface lapped with said movable magnetic core in a manufacturing process.
3 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said solenoid having a first length, said casing has a second length, and said movable magnetic core has a reciprocation stroke of a third length, said first length being greater than third length, said second length being equal to approximately a sum of said first length and said third length.
3 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said casing being constructed of a plurality of steel fins bonded to each other and having outer surfaces vacuum plated with a layer of aluminum, a layer of zinc, and a layer of nickel.
3 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said stationary magnetic core being manufactured from a plurality of steel fins bonded to each other along planes extending generally perpendicularly to said axis, said steel fins having outer surfaces vacuum plated with a layer of aluminum, a layer of zinc, and a layer of nickel.
3 more elements
A magnetic assembly comprising:
- a casing;
- a solenoid disposed inside said casing;
- a stationary magnetic core disposed at least partially inside said solenoid, said stationary core being fixed relative to said solenoid and said casing;
- and
- a movable magnetic core disposed for reciprocation partially inside said solenoid along an axis,
- said solenoid including a coil holder or spool having walls, said stationary magnetic core and said movable magnetic core having working surfaces, said working surfaces and said walls defining a space therebetween, said space being filled with grease.
3 more elements
An energy conversion method comprising:
- providing a magnetic device including a casing, a solenoid disposed inside said casing, a stationary magnetic core disposed inside said solenoid, said stationary core being fixed relative to said solenoid and said casing, and a movable magnetic core disposed for reciprocation inside said solenoid along an axis;
- reciprocating said movable magnetic core along said axis and between a maximally retracted position to a maximally extended position, said movable magnetic core having a maximum proportion of its length located inside said solenoid in said maximally retracted position and a minimum proportion of its length located inside said solenoid in said maximally extended position;
- and
- during reciprocating of said movable magnetic core, supplying to said solenoid an electrical potential in the form of a series of transient electrical pulses having a phase synchronized with a reciprocating stroke of said movable magnetic core.
1 more element
Dependencies are inferred from the claim text.