Solenoid
First Claim
1. A solenoid comprising:
- a stationary member comprising a housing with an end wall and a side wall, a first permanent magnet attached to the end wall, at least one second permanent magnet attached to the side wall and a magnet flux concentrator configured to concentrate a magnetic field generated by the second permanent magnet with a magnetic field generated by the first permanent magnet;
a movable member being movable relative to the stationary member in a direction between a retracted position and an extended position, the movable member comprising a head inserted into the housing, the head being made of magnetically conductive material; and
a spring disposed between the stationary member and the movable member;
wherein the stationary member further comprises a coil surrounding the head of the movable member.
2 Assignments
0 Petitions
Accused Products
Abstract
A solenoid includes a stationary member, a movable member being movable relative to the stationary member and spring disposed between the stationary member and the movable member. The stationary member includes a housing with an end wall and a side wall, a first permanent magnet attached to the end wall, a second permanent magnet attached to the side wall and a magnetic flux concentrator configured to concentrate a magnetic field generated by the second permanent magnet with a magnetic field generated by the first permanent magnet. The movable member includes a head inserted into the housing. The head is made of magnetically conductive material. The stationary member further includes a coil surrounding the head of the movable member. When the coil receives a pulse current, the movable member is driven from an extended/retracted position to a retracted/extended position.
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Citations
10 Claims
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1. A solenoid comprising:
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a stationary member comprising a housing with an end wall and a side wall, a first permanent magnet attached to the end wall, at least one second permanent magnet attached to the side wall and a magnet flux concentrator configured to concentrate a magnetic field generated by the second permanent magnet with a magnetic field generated by the first permanent magnet; a movable member being movable relative to the stationary member in a direction between a retracted position and an extended position, the movable member comprising a head inserted into the housing, the head being made of magnetically conductive material; and a spring disposed between the stationary member and the movable member; wherein the stationary member further comprises a coil surrounding the head of the movable member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification