stud finder- a small permanent magnet in a metal container; when the magnet clicks against the container it indicates that the magnet is directly over an iron nail that holds the wallboard to a stud loadstone,lodestone- a permanent magnet consisting of magnetite that possess polarity and has the...
The annular part () together with the permanent magnets () is placed inside a plastic injection mold tool (), said plastic injection mold tool () being divided radially into several sectors (-) which are provided with slots () allowing them to be moved radially by an actuator. When the ...
While it may be a long time before hybrid magnets are ready to be used in wind turbines orelectric cars, there are other applications which are closer at hand. Dr. Oscar Cespedes, co-principal investigator, who is also at Leeds, said "Althoughroom temperatureapplications in bulk permanentmagn...
Permanent magnets (8) are arranged in receiving pockets (7) formed by recesses (6) of the rotor sheets, said laminated core (3) being composed of at least two differently shaped types of rotor sheets (4, 4', 5). Several rotor sheets (4, 41) of a first type of rotor sheet are ...
1. In a permanent magnet apparatus, means forming a pair of permanent magnets axially extending toward each other to define a magnetic gap in the space between their adjacent ends, means forming a magnetic yoke structure interconnecting said pair of magnets to provide a flux return path around ...
1. Improved process for the preparation of permanent magnets from a bulk alloy containing a mixture based on neodymium-iron-boron which, for a temperature range, has a region in which the said alloy occurs as two phases, the one ... JP Nozieres,LBR Perrier De,M Lelievre - EP 被引量:...
3. The controller of claim 1 wherein said observer model have the form ##EQU12## where i is motor current, v is voltage applied to the motor, L is stator phase inductance, R is stator phase resistance, K is the magnet constant, N is the number of magnet pole pairs on the motor ...
(10, 31), characterised in that said anchors (10, 31) are fitted in the edge region of two adjacent plate elements (1, 2, 32, 33) which are rigid for assembly thereof, in such a way that the contact surfaces of the head portions (16, 36, 44, 53) are disposed at a ...
On this small disc 3, several permanent magnets 4 are arranged symmetrically. Also on the disc 5 to be a motor rotor, several permanent magnets 6 are arranged symmetrically. The repulsion of said permanent magnets 4 and 6 rotates the disc 5 so that a turning force may be extracted. 展开 ...
forming a horseshoe magnet are shown in FIG. 1; differently shaped magnets may be similarly obtained. If a sufficiently heat resistant material is used for bonding, bundling or encasing, the aging heat treatment described above may be applied after rather than prior to forming into desired ...