Company Filing History:
2 out of 338 
1 out of 582 
Years Active: 2001-2004
Title: Erich P Stephen: Innovator in Door Operator Technology
Introduction
Erich P Stephen is a notable inventor based in Roxboro, California. He has made significant contributions to the field of door operator technology, holding a total of 3 patents. His innovative designs have improved the functionality and efficiency of door systems, particularly in transit vehicles.
Latest Patents
One of his latest patents is the "Double trolley overhead door operator." This invention features a door hanger that includes a pair of double trolley assemblies designed for linear movement within a hanger rail. Each trolley assembly is equipped with two rollers that engage roller cavities within the hanger rail. This design allows for integration with the drive system or independent mounting, providing flexibility for both new applications and replacements of prior art door hangers.
Another significant patent is the "Drive nut assembly for a door operator." This invention pertains to a powered door operator for passenger transit vehicles. It includes a drive nut assembly that engages a door hanger bracket connected to a door within an aperture of the vehicle structure. The drive nut interacts with a drive screw to facilitate the movement of the door, allowing for efficient ingress and egress of passengers. The design also incorporates a housing with an internal cavity and a retaining clip for easy maintenance and replacement of the drive nut insert.
Career Highlights
Throughout his career, Erich P Stephen has worked with prominent companies such as Westinghouse Air Brake Technologies Corporation and Westinghouse Air Brake Company. His experience in these organizations has contributed to his expertise in developing innovative door operator solutions.
Collaborations
Erich has collaborated with various professionals in his field, including his coworker Andre Stojc. Their combined efforts have led to advancements in door operator technology.
Conclusion
Erich P Stephen's contributions to door operator technology through his patents and career experiences highlight his role as an innovator in the industry. His work continues to influence the design and functionality of door systems in transit vehicles and beyond.