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. 23, 2004
Filed:
Jul. 31, 2002
Hiroyuki Nakano, Kosai, JP;
Tsuneo Fukushima, Kariya, JP;
Asmo Co., Ltd., Shizuoka, JP;
Abstract
A pump apparatus has an electric motor having an impeller fixed to a rotating axis thereof driven based on signals from an injection control unit to rotate in a normal direction and, then, switched to rotate in a reverse direction so that, when the motor is rotated in the normal direction, the washer liquid is sucked from a second intake conduit and discharged via a first discharge port from a first injection nozzle and, when the motor is rotated in the reverse direction, the washer liquid is sucked from a first intake conduit and discharged via a second discharge port from a second injection nozzle. Since the washer liquid is not injected at the same time from the first and second injection nozzles, an injection amount per unit time of the washer liquid is relatively small, which makes the pump apparatus more compact.