Electrically operated fluid control device
Patent 4293002 Issued on October 6, 1981. Estimated Expiration Date: 
December 4, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 4, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3238972 3267965 InventorsAssigneeApplicationNo. 06/100134 filed on 12/04/1979US Classes:137/625.64, Electric137/625.6Pilot-actuatedExaminersPrimary: Michalsky, Gerald A.Attorney, Agent or FirmInternational ClassesF15B 13/043 (20060101)F15B 13/00 (20060101) Foreign Application Priority Data1978-12-07 JPAbstractAn electrically operated fluid control device for controlling fluid flow under high pressure to be supplied into a fluid actuator, the control device comprising a fluid control valve assembly having a main spool to control fluid flow supplied to the fluid actuator, and an electrically operated pilot valve assembly coaxially incorporated with the control valve assembly to operate the main spool in response to an electric signal. | |
