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:
Feb. 19, 1991
Filed:
Oct. 11, 1988
Kozo Tamura, Hitachi, JP;
Syoichi Nihira, Hitachi, JP;
Yasuhiro Tsukamoto, Hitachi, JP;
Akira Iida, Hitachi, JP;
Hitachi Ltd., Tokyo, JP;
Tagasangyo, Ltd., Ibaraki, JP;
Abstract
There is provided a power supply apparatus for charging-type device including a transformer disposed in a main body of the power supply apparatus, current supply connection terminals connected to a secondary winding of the transformer, current receiving connection terminals so disposed in a charging-type device as to be capable of being coupled to and detached from the current supplying connection terminals, a storage battery so disposed in the charging-type device as to be charged from the current receiving connection terminals, and a load connected to the storage battery, the power supply apparatus for charging-type device comprising relay contacts of a relay connected to a primary side of a primary winding of the transformer, short-circuit contacts for the relay contacts, a relay coil for opering and closing the relay contacts, a first connection control terminal connected to the relay coil, and a second connection control terminal capable of being coupled and detached from the first connection control terminal, the relay coil being connected to a secondary side of secondary winding of the transformer via the first and second control terminals to interrupt a current flowing through the transformer upon completion of battery charging and upon detachment of the charging-type device from the main body of the power supply apparatus.