Harish S Patel

Title: Harish S Patel: Innovator in Electrohydraulic Technology

Introduction

Harish S Patel is a notable inventor based in Madison Heights, MI (US). He has made significant contributions to the field of electrohydraulic technology, particularly with his innovative designs and patents.

Latest Patents

One of Harish S Patel's key patents is the Electrohydraulic Servovalve. This invention features a two-stage miniature electrohydraulic servovalve that includes an electromagnetic positioner. The positioner has a flexure tube mounted drive arm that is secured to and movable with an armature. This armature moves in accordance with a combined magnetic field generated by both permanent magnets and an electrical signal fed to electromagnetic coils. The design also incorporates a four-way hydraulic valve main stage, which includes a valve body with a sleeve that has two annular, internal, axially spaced apart metering grooves. A metering spool with five lands alternating with four metering grooves is positioned within the sleeve for controlled axial movement. Additionally, the invention includes end caps over the sleeve ends and a jet pipe pilot stage featuring a jet pipe member secured to the end of the drive arm. This member has a jet pipe nozzle aligned with the drive arm and a hydraulic fluid feeder passage disposed at right angles to the plane of movement of the drive arm. A resiliently mounted counterbalance is positioned on the drive arm, along with passages in the spool that connect the jet pipe nozzle to the opposite ends of the spool.

Career Highlights

Harish S Patel is currently employed at Koehring Company, where he continues to innovate and develop advanced technologies. His work has been instrumental in enhancing the efficiency and functionality of hydraulic systems.

Collaborations

Throughout his career, Harish has collaborated with notable colleagues, including Robert D Nicholson and Alger T Daniel. These partnerships have contributed to the advancement of technology in their respective fields.

Conclusion

Harish S Patel's contributions to electrohydraulic technology through his innovative patents and collaborations highlight his role as a significant inventor in the industry. His work continues to influence advancements in hydraulic systems and serves as an inspiration for future innovations.