Method and apparatus for testing a spindle in a disc drive

Details Method and apparatus for testing a spindle in a disc drive Method and apparatus for testing a spindle in a disc drive

1998-11-03

2000-10-24

Raevis, Robert

Measuring and testing

Testing of apparatus

403370, A47H 108

Patent

active

061349763

ABSTRACT:
A method and apparatus are used for testing a spindle which is used to support a disc pack for rotation in a disc drive. The test apparatus is removably coupled to the spindle. The current apparatus defines a test surface and has an outer periphery greater than an outer periphery of the spindle. A measurement device is placed proximate the test surface at a location radially displaced from the spindle. A distance between the test surface and the measuring device is measured with a measuring device during rotation of the spindle and the test apparatus.

REFERENCES:
patent: 1201706 (1916-10-01), Dodge
patent: 3782841 (1974-01-01), Winckelhaus
patent: 3847495 (1974-11-01), Peter et al.
patent: 4025213 (1977-05-01), Schafer et al.
patent: 4475842 (1984-10-01), Onaya et al.
patent: 5433551 (1995-07-01), Gordon

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