Electricity: measuring and testing – Magnetic – Magnetic test structure elements
Patent
1998-06-17
2000-10-31
Snow, Walter E.
Electricity: measuring and testing
Magnetic
Magnetic test structure elements
369 53, G01R 3300
Patent
active
061408158
ABSTRACT:
Spin stand platform having split axes. The platform includes an air bearing spindle stage supporting a test disk and constrained for motion in a plane on a surface along a first axis. A micropositioning stage air bearing is provided which is constrained for motion in the plane on the surface along a second axis orthogonal to the first axis and the micropositioning stage is adapted to support a read head element under test. First and second acuators move the stages to desired locations. At the desired location, apparatus removes air from the air bearings to lock-down the stages to the surface at the desired locations. It is preferred that the air bearings be vacuum preloaded and that linear motors be used to move the stages.
REFERENCES:
patent: 5127744 (1992-07-01), White et al.
patent: 5572144 (1996-11-01), Davidson et al.
patent: 5706080 (1998-01-01), Pekin et al.
Greene Philip M.
Hero Stephen L.
Townsend Michael D.
Dover Instrument Corporation
Snow Walter E.
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