Electrical generator or motor structure – Dynamoelectric – Linear
Patent
1995-04-10
1997-02-25
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Linear
310 12, 318135, 360135, 399211, H02K 4102, H02K 4100
Patent
active
056062060
ABSTRACT:
In one embodiment, a device for detecting the position of a head attached to a linear motor, the detection device comprises an extension member for guiding and directing flux therein. A moving coil disposed on the extension member which coil, when energized, moves along the extension for positioning the head. A magnet positioned in a spaced apart relationship with the coil for inducing a drive flux which assists in imparting the motion to the coil when the coil is energized. A first wall is positioned adjacent the linear motor. A second wall is positioned in a spaced apart relationship with the first wall. A first and second magnet both include a north and south pole oriented along their cross-sectional dimension for generating a magnetic field substantially between the first and second walls; wherein the south pole of the first magnet is in abutting contact with the first wall and the north pole of the second magnet is in abutting contact with the first wall; wherein the north pole of the first magnet is in abutting contact with the second wall and the south pole of the second magnet is in abutting contact with the second wall. A sensor is attached to and moving in unison with the coil and positioned between the first and second walls for detecting the magnetic flux between the walls for ultimately determining the position of the magnetic head.
REFERENCES:
patent: 5087844 (1992-02-01), Takedomi et al.
patent: 5289088 (1994-02-01), Andoh
patent: 5341053 (1994-08-01), Yamazaki et al.
patent: 5388086 (1995-02-01), Yamasaki et al.
patent: 5453684 (1995-09-01), Nakayama
patent: 5536983 (1996-07-01), Araki et al.
Furlani Edward P.
Stephany Thomas M.
Eastman Kodak Company
Nguyen Tran
Stephan Steven L.
Watkins Peyton C.
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