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:
Jan. 13, 1998
Filed:
Apr. 26, 1996
Takuji Shibata, Miyagi, JP;
Takashi Watanabe, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A depth sensor for detecting a depth, when grinding the magnetic head in order to set the depth of the magnetic head to a predetermined length including an analog sensor having a resistor whose resistance changed continuously by being ground together with the magnetic head when grinding the magnetic head in a depth direction and for detecting the depth from said continuously changed resistance, and a digital sensor having a resistor whose resistance is changed non-continuously by being ground together with the magnetic head when grinding the magnetic head in the depth direction and for detecting the depth from the non-continuously changed resistance.