The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2008
Filed:
Sep. 30, 2004
Serge Grinberg, Saratoga, CA (US);
Jimmy Luong, San Jose, CA (US);
Kenneth Donald Mackay, San Jose, CA (US);
Lisa Stukey, Legal Representative, Morgan Hill, CA (US);
Serge Grinberg, Saratoga, CA (US);
Jimmy Luong, San Jose, CA (US);
Kenneth Donald Mackay, San Jose, CA (US);
Lisa Stukey, legal representative, Morgan Hill, CA (US);
Hitachi Global Storage Technologies Netherlands BV, Amsterdam, NL;
Abstract
A precisely machined test nest holds a single hard disk drive slider. The test nest is fabricated to contain a micro pickup coil that is positioned to be able to detect magnetic flux from a write element of the slider. The micro pickup coil has highly repeatable and controllable positioning with respect to the write element. This technique also allows local magnetic field to be applied to the read element, and its small size allows excitation at higher frequencies than are currently achievable today. The coil is lithographically defined and integrated into the test nest and used on single slider testers. The low inductance of the coil allows it to be driven at high frequencies. Its position within the test nest ensures good heat sinking and enables large current pulses to be employed.