Invention Grant
- Patent Title: Electromagnetic spool valve
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Application No.: US12380428Application Date: 2009-02-27
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Publication No.: US08397759B2Publication Date: 2013-03-19
- Inventor: Naoki Oikawa , Shigeto Ryuen , Hiroyuki Kato
- Applicant: Naoki Oikawa , Shigeto Ryuen , Hiroyuki Kato
- Applicant Address: JP Tokyo
- Assignee: Keihin Corporation
- Current Assignee: Keihin Corporation
- Current Assignee Address: JP Tokyo
- Agency: Carrier Blackman & Associates, P.C.
- Agent Joseph P. Carrier; William D. Blackman
- Priority: JP2008-053604 20080304; JP2008-078164 20080325; JP2008-107587 20080417; JP2008-138274 20080527
- Main IPC: F16K11/07
- IPC: F16K11/07

Abstract:
The electromagnetic spool valve of the present invention includes a movable linear solenoid section, first and second spools that are coaxially provided in inner space of a valve body so as to switch a state of communication and discommunication among plural ports of the electromagnetic spool valve, a first spring member provided between the first and second spools, and a second spring member provided between a cap member and the second spool. The spring load of the second spring member is set to be greater than the spring load of the first spring member.
Public/Granted literature
- US20090224192A1 Electromagnetic spool valve Public/Granted day:2009-09-10
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