Melvin Curtis Crane
Engineers at Lynda Ln, Fort Collins, CO
License number
Colorado 18513
Issued Date
Sep 16, 1981
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
3835 Lynda Ln, Fort Collins, CO 80526
Professional information
Write And Erase Assembly For Magneto-Optic Drive Apparatus
US Patent:
5490124, Feb 6, 1996
Filed:
Aug 2, 1994
Appl. No.:
8/284871
Inventors:
Thomas C. Oliver - Fort Collins CO
David P. Jones - Bellvue CO
Leslie G. Christie - Greeley CO
Mark E. Wanger - Fort Collins CO
Thomas E. Berg - Fort Collins CO
Melvin C. Crane - Fort Collins CO
David P. Jones - Bellvue CO
Leslie G. Christie - Greeley CO
Mark E. Wanger - Fort Collins CO
Thomas E. Berg - Fort Collins CO
Melvin C. Crane - Fort Collins CO
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G11B 1100
US Classification:
369 13
Abstract:
A write-erase magnet assembly for a data storage device including: a permanent magnet having a longitudinal axis and having a first longitudinally extending face portion with a first polarity and a second longitudinally extending face portion with a second polarity opposite the first polarity for alternately producing write and erase magnetic bias fields on an adjacently positioned data storage medium; a magnet support assembly for rotatably supporting the permanent magnet; a magnetic detent fixedly positioned relative to the longitudinal axis of the permanent magnet for magnetically producing a biasing torque on the magnet tending to orient the closer of the first and second face portions of the permanent magnet in adjacent relationship with the detent. A coil for applying flipping torque and braking torque for an eddy current rotation dampening assembly are also disclosed.
Write And Erase Assembly For Magneto-Optic Drive Apparatus
US Patent:
5345431, Sep 6, 1994
Filed:
Sep 14, 1992
Appl. No.:
7/945281
Inventors:
Thomas C. Oliver - Bellvue CO
David P. Jones - Bellvue CO
Leslie G. Christie - Greeley CO
Mark E. Wanger - Fort Collins CO
Thomas E. Berg - Fort Collins CO
Melvin C. Crane - Fort Collins CO
David P. Jones - Bellvue CO
Leslie G. Christie - Greeley CO
Mark E. Wanger - Fort Collins CO
Thomas E. Berg - Fort Collins CO
Melvin C. Crane - Fort Collins CO
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
G11B 1304
US Classification:
369 13
Abstract:
A write-erase magnet assembly for a data storage device including: a permanent magnet having a longitudinal axis and having a first longitudinally extending face portion with a first polarity and a second longitudinally extending face portion with a second polarity opposite the first polarity for alternately producing write and erase magnetic bias fields on an adjacently positioned data storage medium; a magnet support assembly for rotatably supporting the permanent magnet; a magnetic detent fixedly positioned relative to the longitudinal axis of the permanent magnet for magnetically producing a biasing torque on the magnet tending to orient the closer of the first and second face portions of the permanent magnet in adjacent relationship with the detent. A coil for applying flipping torque and braking torque for an eddy current rotation dampening assembly are also disclosed.