Bearings – Rotary bearing – Antifriction bearing
Patent
1998-07-30
2000-09-05
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
384499, 384514, F16C 3360, F16C 3358
Patent
active
061132772
ABSTRACT:
An improved pivot mechanism for an actuator assembly of a disc drive having an E-block that supports plurality of read/write heads in data reading and writing relationship to an array of spinning data discs. The pivot mechanism has a bearing cartridge that supports the E-block and which pivots about a pivot shaft which supports a pair of ball bearings of the bearing cartridge. Each of the ball bearings contains only three balls that are evenly distributed circumferentially about the pivot shaft. Contact surfaces of the bearing outer race and inner race provide single-point contact between the races and the balls.
REFERENCES:
patent: 2588459 (1952-03-01), Annen
patent: 4548518 (1985-10-01), Ravinale et al.
patent: 4993851 (1991-02-01), Nakanishi
patent: 5768060 (1998-06-01), Albrecht et al.
R.C. Drutowski, "Energy Losses of Balls Rolling on Plates", Journal of Basic Engineering, Jun., 1959, Research Laboratories, General Motors Corporation, Detroit, Mich.
D. Tabor, "The Mechanism of "Free" Rolling Friction", Journal of the American Society of Lubrication Engineers, Nov.-Dec. 1956, Department of Physical Chemistry, University of Cambridge, Cambridge, England.
Lindrose Albert M.
Stefansky Frederick Mark
Dempster Shawn B.
Hannon Thomas R.
Heller Edward B.
Olson Jonathan E.
Seagate Technology LLC
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