John T Perry is a notable inventor based in Salt Lake City, Utah. He has made significant contributions to the field of X-ray technology, holding two patents that showcase his innovative spirit and technical expertise.

Latest Patents

One of his latest patents is the "Heat unit integrator for X-ray tubes." This apparatus is designed to indicate the temperature of an X-ray tube target. It includes an analog storage circuit that simulates the heat energy stored. Input signals representing the current and voltage of the electron beam in the tube are multiplied to provide a signal that represents the instantaneous power input. The power signal is integrated in the storage circuit to yield a temperature signal that represents the total heat input. This temperature signal is then dissipated by a cooling curve circuit that represents heat loss over time. An indicator reads the temperature signal, while input voltage and current signals are processed to refer them to ground before multiplication. The current signal is corrected to set its zero value, and the voltage signal derived from a transformer primary is corrected for transformer regulation. To eliminate spurious inputs, the power signal is gated to the storage circuit only when a measured current is flowing. Multiple storage circuits can indicate the temperature of several tubes, allowing them to remember the temperature of their own targets while the power signal and temperature indicator are being used with another storage circuit.

Another significant patent by Perry is the "Apparatus for predicting incipient failure of an X-ray generator tube." This invention senses failure-inducing operating conditions of an X-ray generator tube. Some of the sensed conditions include hot overload of the target and thermal shock of the target, as well as hot target bearing use and thermionic cathode filament heater use. Certain sensed conditions are integrated, and the integrated output is compared against a predetermined standard to predict the remaining operating life of the tube. Other sensed conditions, if present, indicate incipient failure without the need for integration. The integrated signals are stored in electrochemical cells and read out periodically to predict potential tube failure.

Career Highlights

John T Perry has worked at Varian Associates, Inc., where he has been able to apply his innovative ideas in the field of X-ray technology. His work has contributed to advancements that enhance the safety and efficiency of X-ray systems.

Collaborations

Perry has collaborated with notable coworkers such as Joel J Schmutzer and James A Gr

Profile summary based on public USPTO records.

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