This inventor holds 4 USPTO granted patents. Top assignees: Inventio Ag, Other. Active years: 1998-2002.
Location History:
- Barrington Hills, IL (US) (1998 - 2002)
- Alameda, CA (US) (2002)
Company Filing History:
2 out of 1,407 
2 out of 834,350 Years Active: 1998-2002
Title: Innovations by John W Koshak
Introduction
John W Koshak is an accomplished inventor based in Barrington Hills, IL (US). He holds a total of 4 patents that showcase his innovative contributions to the field of hydraulic systems and safety mechanisms.
Latest Patents
One of his notable inventions is the "High efficiency shoes for a jack arrester." This brake apparatus is designed to engage and lock a piston of a hydraulic elevator drive, which carries an elevator car or a cable pulley. The apparatus features a pair of opposed pivotally mounted brake arms, each equipped with a curved support that carries a brake lining for engaging the piston’s exterior surface. The brake lining is uniquely formed by bending a planar body at various vertical grooves, creating sections that distribute compression forces evenly when engaged.
Another significant invention is the "Jack arrestor," which serves as an emergency brake for hydraulic rams, particularly in elevators. This invention utilizes two lever acting brake arms lined with an accretable metal as the friction material. When activated, the brake arms contact the ram circumferentially, effectively slowing and stopping its downward motion. The lining material is precisely machined to ensure a snug fit, providing sufficient frictional force to halt the ram's descent. The safety brake can be actuated by various triggers, including loss of hydraulic pressure or an electronic signal from a hydraulic pressure detector.
Career Highlights
Throughout his career, John W Koshak has made significant strides in the field of hydraulic systems. His innovative designs have contributed to enhanced safety measures in elevator systems, showcasing his commitment to improving technology in practical applications.
Collaborations
John has collaborated with notable individuals such as Paul L Baldwin and Tony S Huen, further enriching his experience and expertise in the field.
Conclusion
John W Koshak's contributions to hydraulic safety mechanisms and elevator technology reflect his innovative spirit and dedication to engineering excellence. His patents continue to influence the industry and enhance safety standards.