Measuring and testing – Surface and cutting edge testing – Roughness
Reexamination Certificate
2007-02-06
2007-02-06
Raevis, Robert (Department: 2856)
Measuring and testing
Surface and cutting edge testing
Roughness
Reexamination Certificate
active
11059290
ABSTRACT:
A slider-disk interface tester for measuring the friction force at the interface uses a “negative-pitch” slider in contact with a rotating disk. The tester includes a base that supports a motor for rotating the disk and an actuator for supporting the slider and moving it to a desired radial location on the disk surface. The slider is connected to the actuator by a rigid arm and a suspension like the suspension used in disk drives. When the disk is rotating, the negative-pitch slider has its upstream or leading portion in contact with the disk surface and its downstream or trailing portion not in contact with the disk surface. A contact pad is located at the leading portion of the slider and is in contact with the disk surface. The tester includes a friction-force sensor and associated measurement circuitry, such as strain gauge, piezoelectric and temperature sensors, and is located at one of several locations on the rigid arm, suspension or slider.
REFERENCES:
patent: 6196062 (2001-03-01), Wright et al.
patent: 6229664 (2001-05-01), Albrecht et al.
patent: 6536265 (2003-03-01), Hanchi et al.
patent: 6751063 (2004-06-01), Payne et al.
patent: 6762909 (2004-07-01), Albrecht et al.
patent: 56003436 (1981-01-01), None
patent: 08315354 (1996-11-01), None
J. Itoh, et al., “An Experimental Investigation for Continuous-contact Recording Technology,” IEEE Trans. on Magnetics, vol. 37, No. 4 Jul. 2001, p. 1806.
C.M. Mate et al., “Dynamics of Contacting Head-Disk Interfaces”, IEEE Trans. Magn. 40 (2004) 3156-3158.
U.V. Nayak et al., “An Overview of Glide Testing”, IEEE Transactions on Magnetics, vol. 39, No. 2, Mar. 2003, pp. 729-734.
G.P. Singh et al., “A Novel Wear-in-Pad Approach to Minimizing Spacing at the Head/Disk Interface”, IEEE Trans. Magn. 40 (2004) 3148-3152.
Mate Charles Mathew
Payne Robert N.
Berthold Thomas R.
Hitachi Global Storage Technologies - Netherlands B.V.
Raevis Robert
LandOfFree
Apparatus for measurement of friction force at the interface... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for measurement of friction force at the interface..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for measurement of friction force at the interface... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3830507