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:
Sep. 11, 1984
Filed:
May. 26, 1983
Teruo Minami, Kawasaki, JP;
Kabushiki Kaisha Komatsu Seisakusho, Tokyo, JP;
Abstract
An alternating current feeder system for use in trolley assisted dump trucks has a feeder circuit of a.c. system including a Scott connection transformer used as a main substation, main- and T-winding sections having a phase difference of 90 degrees on the secondary side of the transformer and serving to transform three-phase a.c. power into single phase one supplied to feeder substations, single phase transformers respectively installed in the feeder substations, each being adapted to drop the voltage applied on trolley wires to the level required for the latter, and a different phase section provided in a boundary defined between the single phase transformers.