Single-sided sensor for glide height testing

Details Single-sided sensor for glide height testing Single-sided sensor for glide height testing

1997-11-07

2000-02-15

Raevis, Robert

Measuring and testing

Surface and cutting edge testing

Roughness

G01B 1708

Patent

active

060239638

ABSTRACT:
The present invention is a glide height test slider for detecting asperities and irregularities on a surface of a rotating disc. A slider body has a plurality of edges defining its outer boundaries. The slider body has a piezoelectric element on at least one of its surfaces, and the piezoelectric element does not extend outside the outer boundaries of the slider body. First and second confronting conductors are patterned on the piezoelectric element so that an electric field generated by the piezoelectric element in response to a strained force due to vibration of the slider body induces a voltage between the first and second conductors representative of the vibration. The piezoelectric elements may be a separate element bonded to the slider body, or the slider body may be formed of a piezoelectric material to form the piezoelectric element.

REFERENCES:
patent: 5488857 (1996-02-01), Homma et al.
patent: 5640089 (1997-06-01), Horikawa et al.
patent: 5672929 (1997-09-01), Gutsell et al.
patent: 5689064 (1997-11-01), Kennedy et al.
patent: 5773913 (1998-06-01), Casselden
patent: 5864054 (1999-01-01), Smith, Jr.

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