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:
May. 21, 2002
Filed:
Dec. 14, 2000
Harvey B. Jansen, Mesa, AZ (US);
Craig S. Jansen, Mesa, AZ (US);
Jansen's Aircraft Systems Controls, Inc., Tempe, AZ (US);
Abstract
A device for metering pressurized fluid in proportion to a supplied input signal to a solenoid provides non-proportional magnetic flux rectified by a piece-wise non-linear spring assembly. The non-linear spring assembly includes a pair of flexure springs each with four independent spring fingers. The spring fingers supply a plurality of piece-wise forces opposing movement of the armature caused by magnetic flux generated by an electromatic coil to provide a non-proportional opposing force the non-proportional force of the magnetic flux. This allows the metering valve to be moved, and thereby fluid metered, in proportion to the input signal supplied to the coil. A position transducer can be coupled the armature to provide valve position feedback to an electronic control unit for correcting deviations in the actual position of the valve.