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:
Oct. 31, 2017
Filed:
Jan. 17, 2014
Aisin Aw Co., Ltd., Anjo-shi, Aichi-ken, JP;
Hiroyuki Kutsubo, Anjo, JP;
Yoshimitsu Hyodo, Nishio, JP;
Kenichi Tsuchida, Nishio, JP;
Naoyuki Fukaya, Okazaki, JP;
Kazunori Ishikawa, Toyota, JP;
AISIN AW CO., LTD., Anjo, JP;
Abstract
In a sleeve, two input ports are formed as ports that receive a discharge pressure of an electromagnetic pump, and a drain port connected to a drain oil passage is formed on the same circumference as that on which the input port is formed, so as to have a smaller opening area than the input port and an output port connected to an oil passage. The axial length of the second land is set so that the input port can be closed by the second land when a signal pressure is equal to or higher than a set pressure, and that the input port and the drain port can be closed by the second land when the signal pressure is lower than the set pressure.