Magnetic disc drive having magnetic particle trap for hydrodynam

Details Magnetic disc drive having magnetic particle trap for hydrodynam Magnetic disc drive having magnetic particle trap for hydrodynam

1995-02-13

1999-09-21

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9908, 384107, 384113, 384446, 210222, 210695, 184 625, G11B 1702, F16C 3206, B01D 3506, F01M 110

Patent

active

059562048

ABSTRACT:
A magnetic disc drive system includes a hydrodynamic bearing. The magnetic disc drive system includes a disc drive chassis, a magnetic storage disc, and a read/write transducer adjacent to the disc for reading and writing information on the disc. The hydrodynamic bearing assembly rotatably couples the magnetic storage disc to the disc drive chassis. The hydrodynamic bearing assembly includes a fluid path therethrough for circulating a fluid. A permanent magnet is placed in the fluid path and used for attracting magnetic particles carried in the fluid.

REFERENCES:
patent: 3283905 (1966-11-01), Cass
patent: 3800914 (1974-04-01), Miyata
patent: 4440402 (1984-04-01), Pinkus et al.
patent: 4630943 (1986-12-01), Stahl et al.
patent: 4673997 (1987-06-01), Gowda et al.
patent: 4759842 (1988-07-01), Frees et al.
patent: 4779165 (1988-10-01), Elsaesser et al.
patent: 4784767 (1988-11-01), Hasuda et al.
patent: 4851116 (1989-07-01), Tomita
patent: 4934836 (1990-06-01), Tanaka et al.
patent: 4938611 (1990-07-01), Nii et al.
patent: 4965476 (1990-10-01), Lin
patent: 5011165 (1991-04-01), Cap
patent: 5013947 (1991-05-01), Ide
patent: 5140479 (1992-08-01), Elsing et al.
patent: 5141338 (1992-08-01), Asada et al.
patent: 5142173 (1992-08-01), Konno et al.
patent: 5142174 (1992-08-01), Ide
patent: 5215385 (1993-06-01), Ide
patent: 5223758 (1993-06-01), Kataoka et al.
patent: 5224782 (1993-07-01), Miwa et al.
patent: 5246294 (1993-09-01), Pan
patent: 5267737 (1993-12-01), Cossette et al.
patent: 5284391 (1994-02-01), Diel et al.
patent: 5328271 (1994-07-01), Titcomb
patent: 5358339 (1994-10-01), Konno et al.
patent: 5366298 (1994-11-01), Toshimitsu et al.
patent: 5367416 (1994-11-01), Cossette et al.
patent: 5376850 (1994-12-01), Elsing et al.
patent: 5376851 (1994-12-01), Lipo et al.
patent: 5376852 (1994-12-01), Kawamura et al.
patent: 5389252 (1995-02-01), Morrick
patent: 5423612 (1995-06-01), Zang et al.
patent: 5427456 (1995-06-01), Hensel
patent: 5441647 (1995-08-01), Wascher et al.
patent: 5458785 (1995-10-01), Howe et al.
patent: 5465078 (1995-11-01), Jones, Jr.
patent: 5504637 (1996-04-01), Asada et al.
patent: 5524986 (1996-06-01), Leuthold et al.
S. Prina and C. Taft, "The Design and Analysis of Brushless DC Motors Having Smooth Rotor Back Iron", pp. 75-100 (undated) No Date.
DC Motors Speed Controls Servo Systems, "Brushless DC Motors", Electro-Craft Corporation, Hopkins, MN, Chapter 6, pp. 6-5-6-17 Oct. 1972.
C. Veinott, Theory and Design of Small Induction Motors, "Air-Gap MMF and Flux Waves Set Up By A Single-Phase Winding", published by McGraw-Hill Company, Inc., New York, Chapter 14, pp. 265-281 (1959) No Month.
C. Veinott, Theory and Design of Small Induction Motors, "Air-Gap MMF Waves Set Up By A Stator Winding", published by McGraw-Hill Company, Inc., New York, Chapter 15, pp. 282-290 (1959) No Month.
A.E. Fitzgerald, C. Kingsley, Jr. and S. Umans, Fourth Edition--Electric Machinery, "Rotating Machines: Basic Concepts", published by McGraw-Hill Company, Inc., New York, pp. 133-135 (1983) No Month.
T.H. Barton, J.C. Dunfield, IEEE Transactions on Power Apparatus and Systems, "Inductances of a Practical Slip-Ring Primitive", IEEE, vol. PAS-85/No. 2, pp. 140-159 (Feb. 1966).
J.C. Dunfield, T.H. Barton, Proceedings of The Institution of Electrical Engineers, "Effect of m.m.f. and permeance harmonics in electrical machines--with special reference to a synchronous machine", The Inst. of Elect. Eng., Savoy Place, London, WC2, vol. 114, No. 10, pp. 1443-1450 (Oct. 1967).

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