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. 25, 1993
Filed:
Jul. 16, 1991
Hironobu Kageyama, Kawasaki, JP;
Mitsuo Nakamura, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
A power supply device includes an emergency power cut-off switch, a basic power supply unit supplied with an external alternating current electric power through the emergency power cut-off switch and a plurality of expansion power supply units supplied respectively with external alternating current electric power through power supply switches and provided sequentially and externally to the basic power supply unit. Diodes or current control elements are inserted in a path connecting a first line supplied with direct current outputs from the power supply units in the preceding stages of the externally provided expansion power supply units to a second line for supplying direct current outputs to the power supply units in the next stages of the externally provided expansion power supply units.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile