Company Filing History:
1 out of 21 
3 out of 832,812 Years Active: 1977-1981
Title: The Innovative Contributions of Donald J Leslie
Introduction
Donald J Leslie is a notable inventor based in Altadena, California, recognized for his significant contributions to acoustic technology. With a total of four patents to his name, Leslie has developed innovative solutions that enhance sound quality and performance in various applications.
Latest Patents
One of Leslie's latest patents is the Universal Pulsato Unit. This invention features an improved mounting for an acoustic pulsato rotor that effectively suppresses spurious sounds. It utilizes a spring bias for axial thrust between the shaft ends and bearing cups. The design includes a plurality of thin spider legs that extend from a rotor mounting panel, providing spring characteristics while remaining acoustically transparent to the sound radiation pattern. Additionally, the spider legs feature a quick fit, anti-noise twist lock connection to a central hub. Improved rubber-like grommets are incorporated to provide anti-shock and anti-noise mounting for the shaft. Another notable patent is the Rotor Drive for Pulsato Apparatus, which introduces a two-speed motor drive system for an acoustic rotor. This system includes two simple, relatively inexpensive motors that work together to drive the acoustic rotor at either a pulsato speed or a slower chorus speed, while also providing automatic braking from full pulsato speed to a slower speed or a complete stop.
Career Highlights
Throughout his career, Donald J Leslie has worked with various companies, including Marmon Company. His experience in the industry has allowed him to refine his inventions and contribute to advancements in acoustic technology.
Collaborations
Leslie has collaborated with notable individuals, including his coworker Paul H Sharp, to further enhance his innovative projects.
Conclusion
Donald J Leslie's contributions to acoustic technology through his patents demonstrate his commitment to innovation and excellence in the field. His work continues to influence the industry and improve sound quality in various applications.