G - Physics – 01 – P
Patent
G - Physics
01
P
26/113, 73/68
G01P 3/44 (2006.01) G01P 3/487 (2006.01)
Patent
CA 1257485
ABSTRACT OF THE DISCLOSURE A tachometer generator of the inductive pickup variety is disclosed particularly adapted to be mounted in close proximity with a rotating multiple permanent magnet structure. The coil produces a voltage output proportional to the rate of change and magnitude of the magnetic flux of the rotating magnet. In accordance with this invention, an inductive pickup is disclosed having a core piece which acts as a conduction path for the magnetic field of the rotating magnet and further acts as a means for mounting the inductive pickup within the associated structure. Lead wires are imbedded within the bobbin and form protruding central conductors which act as posts to which end of the coil wires are electrically and mechanically attached. The lead wires and core piece components are insert molded such that they are loaded into an injection molding die prior to the introduction of plastic material in a molten state which forms the bobbin component. The lead wire is sharply bent within the bobbin to insure firm engagement between the lead wire and bobbin The tachometer generator according to this invention is simple and inexpensive to manufacture, and provides accurate installed positioning thereby enhancing performance.
488686
Black & Decker Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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