David P Ashby

Title: David P Ashby: Innovator in Air Brake Technology

Introduction

David P Ashby is a notable inventor based in Kirkland, WA (US). He has made significant contributions to the field of air brake technology, particularly with his innovative designs that enhance the efficiency and safety of braking systems.

Latest Patents

David P Ashby holds a patent for a "Quick vent valve for air brake line." This invention features a valve with a direct flow passage extending through it. A flexible diaphragm is positioned between a main valve seat and an exhaust seat. The flow of pressurized air into the valve through the inlet port deflects the diaphragm away from the main seat and seals it against the exhaust seat. When the pressure at the delivery port exceeds that of the inlet port, the diaphragm moves away from the exhaust seat and against the main seat. A shunt passageway communicates portions of the flow passage on opposite sides of the diaphragm to prevent the maintenance of residual positive pressure on the delivery side. This innovative design includes a groove along the frustoconical main seat and peripheral cutouts on the diaphragm. In one embodiment of the valve, a push member assists in unseating the diaphragm from the exhaust seat.

Career Highlights

David P Ashby is currently associated with GT Development Corporation, where he continues to work on advancements in air brake technology. His expertise and innovative mindset have positioned him as a valuable asset in his field.

Collaborations

David has collaborated with Charles J Green, contributing to the development of innovative solutions in air brake systems.

Conclusion

David P Ashby is a distinguished inventor whose work in air brake technology has led to significant advancements in safety and efficiency. His patent for the quick vent valve exemplifies his commitment to innovation in this critical area.