Frederick W Crall

Title: The Innovative Contributions of Frederick W. Crall

Introduction

Frederick W. Crall is a notable inventor based in Farmington Hills, MI (US). He has made significant contributions to the field of automotive engineering, particularly with his innovative designs for starter motors and alternators. With a total of 5 patents to his name, Crall's work exemplifies the spirit of innovation in the automotive industry.

Latest Patents

One of Crall's latest inventions is the alternator starter, which combines a starter motor and alternator for vehicular engine systems. This design allows for direct coupling to an engine power shaft, positioned between the engine and transmission. The alternator starter features a pair of axially offset magnetically permeable disks bolted to the power shaft, forming an annular channel. Rare earth permanent magnets are mounted on the inside face of one of the disks, while a stationary, ironless stator assembly with stranded conductive wire windings is positioned within the channel. This innovative design utilizes a polarity sensor to control the driver switches, providing drive current to the starter motor stator coil.

Another version of the alternator starter is designed to be positioned between the engine and transmission, replacing the conventional ring gear in the drive train assembly. This dual-purpose device also employs a pair of offset magnetically permeable discs and features a stationary brush assembly that conducts electrical current when operated as a starter motor. When functioning as an alternator, the magnetic flux from the permanent magnets generates electrical current within the stationary stator.

Career Highlights

Frederick W. Crall has dedicated his career to advancing automotive technology. He is currently associated with Chrysler Corporation, where he continues to innovate and develop new technologies that enhance vehicle performance and efficiency. His work has had a lasting impact on the automotive industry, showcasing his commitment to engineering excellence.

Collaborations

Throughout his career, Crall has collaborated with talented individuals such as Earl E. Daniels and Ivor W. Carter. These partnerships have contributed to the successful development of his innovative designs and have fostered a collaborative environment for creativity and problem-solving.

Conclusion

Frederick W. Crall's contributions to automotive engineering through his innovative patents demonstrate his expertise and dedication to the field. His work continues to influence the design and functionality of vehicular systems, making him a significant figure in