This inventor holds 2 USPTO granted patents. Top assignees: Arx Limited, United States of America as Represented by the Secretary of the Air Force. Active years: 1978-1991.
Company Filing History:
1 out of 16 
1 out of 5,083 
Years Active: 1978-1991
Title: Innovations of Stanley E. Spencer
Introduction
Stanley E. Spencer is a notable inventor based in Palos Verdes Estates, California. He holds 2 patents that showcase his contributions to the field of refrigeration technology. His work reflects a commitment to advancing engineering solutions that enhance efficiency and performance.
Latest Patents
One of Spencer's latest patents is the "Dual Hybrid Demand Refrigeration Control Apparatus." This innovative refrigeration control apparatus is specifically designed for use with cryogenic coolers. It features a brushless variable speed drive motor that powers a mechanical cooler-compressor. The electronic control circuitry is coupled to the motor, allowing the motor speed and cooling rate to respond to temperature changes in the area being cooled. The system compares a sensed temperature signal to a reference signal derived from motor speed. The difference is used to adjust the duty cycle of a high-frequency pulse train, which modulates the drive current applied to the motor. This design includes high and low motor speed limits and sensor failure protection circuitry to ensure continuous operation.
Another significant patent is the "Double Acting Dynamic Seal with E-Shaped Spring and L-Shaped Seals." This invention is a small bidirectional polymeric piston seal, particularly useful for cryogenic refrigerators. It incorporates an E-shaped metallic spring retainer and two wound spring seal expanders positioned between two L-shaped polymeric seals. The L-shaped design allows for the use of conventional tooling with high-strength abrasive polymeric compounds while maintaining tighter tolerances during manufacturing. This results in uniform frictional resistance and longer wear life under high-pressure forces.
Career Highlights
Throughout his career, Stanley E. Spencer has worked with various organizations, including Arx Limited and the United States of America as represented by the Secretary of the Air Force. His experience in these roles has contributed to his expertise in refrigeration technology and patent development.
Collaborations
Spencer has collaborated with notable individuals such as David B. Giguere and Wilfred J. Gully. These partnerships have likely enriched his work and led to innovative solutions in his field.
Conclusion
Stanley E. Spencer's contributions to refrigeration technology through his patents demonstrate his innovative spirit and engineering prowess. His work continues to influence advancements in the industry, showcasing the importance of creativity and collaboration in the field of inventions.