John H Parker

Title: Innovations by John H Parker in Elevator Technology

Introduction

John H Parker is an accomplished inventor based in San Diego, California. He is known for his innovative contributions to elevator technology, particularly in the area of position sensing systems. With a focus on enhancing the efficiency and accuracy of elevator operations, Parker has made significant strides in this field.

Latest Patents

Parker holds a patent for an "Elevator position sensing system using coded vertical tape." This invention features a position sensing system that includes a coded tape vertically mounted in an elevator shaft. A sensor unit is mounted on the elevator car to detect code indicia on the tape. The sensor unit connects to output circuitry that converts the sensor outputs into elevator position data for transmission to an elevator controller. The tape consists of two parallel tracks of indicia extending along its length. The first track comprises a pseudo-random code sequence that is non-repeating along any N successive bits for the length of the tape. The sensor unit includes a first set of sensors for detecting the indicia in the first track, producing an N-bit output representative of a coarse elevator position. The second track has spaced indicia forming a fine scale between successive coarse code positions on the first track. A second set of sensors detects the fine code indicia, producing fine code position information at successive points between each pair of coarse code positions as the sensors traverse the tape.

Career Highlights

Parker's career is marked by his dedication to improving elevator technology. His work at United States Elevator Corporation has allowed him to apply his innovative ideas in practical settings. His patent reflects his commitment to enhancing the safety and reliability of elevator systems.

Collaborations

Throughout his career, Parker has collaborated with notable colleagues, including Richard E Watt and William R Hoelscher. These partnerships have contributed to the development of advanced technologies in the elevator industry.

Conclusion

John H Parker's contributions to elevator technology through his innovative patent demonstrate his expertise and commitment to improving safety and efficiency in this field. His work continues to influence the industry and pave the way for future advancements.