Company Filing History:
Years Active: 1982-1985
Title: Innovations by Walter L. Cherry
Introduction
Walter L. Cherry is a notable inventor based in Winnetka, IL, with a significant contribution to the field of electrical products. He holds five patents that showcase his innovative approach to switch technology. His work has had a lasting impact on the design and functionality of various electronic devices.
Latest Patents
One of his latest patents is the "Switch with Conical Spring Actuator." This invention features a capacitive or membrane switch equipped with a coil spring that has a conical base and a cylindrical top. The spring biases a switch key to its rest position, and when pressed, the conical base compresses to provide an exponentially increasing counter-force, actuating the switch at a predetermined point. After actuation, the key continues to move, compressing the cylindrical portion of the spring to indicate overtravel operation.
Another significant patent is the "Capacitive Keyboard Switch." This capacitive switch utilizes a conical conducting spring within a switch housing, positioned above an underlying capacitive plate covered by a dielectric layer. The bottom coil of the spring engages the housing slots, maintaining its position above the capacitive plate. In its rest state, the switch defines a substantially zero capacitance, with the spring biasing a pushbutton upward. When the pushbutton is pressed, the spring compresses against the capacitive plate, defining a predefined capacitance that indicates the switch's depressed condition.
Career Highlights
Walter L. Cherry is associated with Cherry Electrical Products Corporation, where he has contributed to the development of innovative electrical solutions. His expertise in switch technology has positioned him as a key figure in the industry.
Collaborations
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Conclusion
Walter L. Cherry's contributions to switch technology through his innovative patents have significantly advanced the field of electrical products. His work continues to influence the design and functionality of modern electronic devices.