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:
Jun. 24, 1980
Filed:
Jun. 16, 1978
Roland J Braun, Vestal, NY (US);
Gary R Carden, Binghamton, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Field accessed magnetic domain device apparatus, of the kind which employs an inner and an encompassing outer solenoid as the rotational magnetic field orthogonal drive coil members with the magnetic domain device(s) mounted within the inner solenoid, has conductive shield means disposed within the inner solenoid between the device(s) and the solenoids. This results in a substantially uniform flux distribution which passes through the inner solenoid and/or mitigation of the adverse effects of the stray flux between turns of the solenoids. As a consequence, a substantially uniform rotational magnetic field distribution is provided in the active area for the device(s), generally referred to as magnetic bubble device(s) or chip(s).