Company Filing History:
Years Active: 1976-1980
Title: The Innovations of Bernard E. Callahan
Introduction
Bernard E. Callahan is a notable inventor based in Hoffman Estates, IL (US). He has made significant contributions to the field of vehicular technology, holding a total of 3 patents. His work focuses on enhancing the safety and efficiency of railway systems and vehicular data handling.
Latest Patents
One of Callahan's latest patents is the "Vehicular Data Handling and Control System." This innovative onboard unit consists of a tape recorder and associated data handling components that provide records of vehicular operating information, including speed, distance, power level, braking level, and traction motor current. Each quantity is associated with an incremental distance and/or time that is fixed. For rail-guided vehicles, location signals from ground-mounted markers are also recorded, allowing for precise location tracking. The system utilizes a magnetic tape unit for data storage and operational instructions, enabling convenient alterations without internal modifications. Each unit retains a unique non-volatile serial number, facilitating easy correlation of recorded tapes to onboard units.
Another significant patent is the "Slip-Slide Detector System for Railway Car Wheels." This inventive system features a magnetic pulse generator mounted on each axle of a railroad car. The outputs from these pulse generators are fed to a detector that compares the speeds of the axles. When wheel slip is detected, the system operates solenoid-operated dump valves to increase brake pressure on the slipping axle truck. The detector circuitry can also identify wheel slide, allowing for corrective action. Additionally, the system prevents synchronous sliding of all axles by sensing the rate of change of count.
Career Highlights
Bernard E. Callahan has dedicated his career to advancing technology in the transportation sector. He is currently employed at Vapor Corp., where he continues to innovate and develop new solutions for vehicular systems.
Collaborations
Throughout his career, Callahan has collaborated with notable colleagues, including George A. Carlson and Richard N. Daniels. Their combined expertise has contributed to the success of various projects and patents.
Conclusion
Bernard E. Callahan's contributions to vehicular technology and railway safety are commendable. His innovative patents reflect a commitment to improving operational efficiency and safety in transportation systems. His work continues to influence the industry positively.