John L Eilertsen

Title: Innovations by John L Eilertsen

Introduction

John L Eilertsen is a notable inventor based in Birmingham, MI (US). He has made significant contributions to the field of engineering, particularly in the development of solenoid actuators and linear indexing actuators. With a total of three patents to his name, Eilertsen's work showcases his innovative approach to solving complex engineering challenges.

Latest Patents

Eilertsen's latest patents include advancements in solenoid actuators. These solenoid actuators comprise an armature mounted along its planar edge by ball bearing elements within a stator frame assembly. The armature and stator frame include opposing grooves at the plane of the armature in which the ball bearing elements are captured. The stator comprises multiple pole pieces having conductive ribbon stock wound therearound for connection to a source of electrical power to move the armature on the ball bearing elements within the frame. Preferred embodiments include fixed axis, variable position linear actuators, variable axis linear actuators, and rotary actuators. Modified embodiments feature a stator assembly wherein opposed stator poles are staggered laterally of the actuator centerline, positioned between adjacent pairs of opposed poles. The armature may be flat or consist of a juxtaposed spaced pair of armature plates with internested undulations projecting between adjacent pairs of the opposing stator poles.

Another significant patent is for an incrementally indexing linear actuator. This electromagnetic linearly indexing actuator features a shaft mounted for linear motion in the direction of its axis. A pair of electromagnetic stator assemblies are carried in fixed position coaxially spaced from each other along the shaft axis. Each stator assembly has an associated armature that is slidably carried by the shaft, along with a spring for urging each armature away from its associated stator. A latch is pivotally mounted at one end to each armature eccentrically of the shaft axis, with a central aperture embracing the shaft. The stator assemblies are sequentially and alternately energized, allowing the latches to alternately grip and move the shaft during the motion of the associated armatures. The shaft returns to its initial position by a return spring or by an opposing pair of armature and stator assemblies.

Career Highlights

Throughout his career, John L Eilertsen has demonstrated a commitment to innovation and engineering excellence. His work has led to the development of advanced actuator