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:
Mar. 30, 1999
Filed:
Feb. 20, 1997
Applicant:
Inventors:
John J Hayes, Wake Forest, NC (US);
David R Irvin, Raleigh, NC (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
320108 ; 307 66 ; 320D / ;
Abstract
A power supply device and system for providing power to a portable electronic device. A detachable device includes a rechargeable DC power source, a DC-to-AC inverter, and a primary transformer winding around a first core element. The portable electronic device includes multiple secondary transformer windings around a second core element. The detachable device cooperates with the portable electronic device so as to form a complete power supply circuit for providing AC and/or DC operating voltages to the portable electronic device.