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. 05, 1992
Filed:
Jun. 22, 1989
Applicant:
Inventors:
Shyam C Das, Sudbury, MA (US);
Michael L Mallary, Berlin, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360113 ; 360126 ;
Abstract
A magnetic recording head including a read pole disposed in a gap between a pair of write poles, and a sensor spaced away from the gap, the read pole adapted to conduct flux to the sensor, each write pole forming a respective cavity between itself and the read pole where the outside of at least one pole is tapered down toward the pole tip, the poles being closer together at their tips than they are near the sensor.