Company Filing History:
1 out of 51,943 
1 out of 5,004 
Years Active: 1989
Title: Innovations of James H Bertke
Introduction
James H Bertke is a notable inventor based in Cincinnati, OH (US). He holds 2 patents that showcase his contributions to engineering and technology. His work primarily focuses on improving systems related to gas turbine engines and band clamp apparatuses.
Latest Patents
One of his latest patents is the "Turbine cooling air transferring apparatus." This invention provides an improved system for delivering cooling air to the turbine blades of a gas turbine engine. The system features an inducer that receives pressurized cooling air from the compressor and directs it tangentially to a radial flow impeller equipped with an air seal. The cooling air is then directed to the turbine blades mounted on the rim of the rotating first turbine disk. Additionally, a second portion of the cooling air is conveyed through a deswirler, introducing it into a circumferential channel surrounding the rotor shaft. This cooling air is subsequently directed to a second inducer on the higher pressure turbine disk, which then conveys it to the lower pressure turbine rotor blades.
Another significant patent by Bertke is the "Band clamp apparatus." This apparatus consists of two 180-degree segments bolted together at flanges on the horizontal centerline. Each segment features a scalloped band contour for weight reduction. The internal groove in the band clamp has parallel facing walls that engage the mated flanges of the engine/exhaust system casings. Local radial restraints are provided on the casings to achieve radial constraint and circumferential positioning of the band clamp apparatus.
Career Highlights
James H Bertke has worked with prominent organizations, including General Electric Company and the United States of America as represented by the Secretary of the Air Force. His experience in these companies has contributed significantly to his expertise in engineering and innovation.
Collaborations
Throughout his career, Bertke has collaborated with notable colleagues such as James R Reigel and Robert J Corsmeier. These collaborations have likely enriched his work and led to further advancements in his field.
Conclusion
James H Bertke's contributions to the field of engineering through his patents and collaborations highlight his innovative spirit and dedication to improving technology. His work continues to influence advancements in gas turbine engines and related systems.