Other

University of Utah Research Foundation

Geneva Steel

Richard W Grow

Larry R Barnett

Robert E Benner

J Mark Baird

Robert J Grow

William N Cain

Michael B Kenny

Kyle J Bunch

A shape meter for measuring the deviation from flatness of a moving rolled steel plate is disclosed. The shape meter includes a laser source for generating an illuminated spot on the steel plate. The laser spot must be separable or distinguishable from background radiation emitted by the steel plate. For instance, if the steel plate is hot and the laser source is an argon laser generating blue green light, the optical filter must pass the blue green light and filter the red thermal emissions. The laser light is directed onto the moving steel plate, and a detector measures the light scattered from the steel plate. The detector includes an optical filter, an optical lens, and a lateral effect diode sensor. A computer then calculates and reports the deviation from flatness of the moving rolled steel plate based on the scattered light measured with the lateral effect diode sensor.

Non-contact shape meter for flatness measurements

A majority carrier, solid state cathode uses ballistic behavior to provide a highly coherent (and modulated) electron beam, with a large current density and expected efficiencies greater than fifty percent.

Ballistic electron, solid state cathode

A gas ionization type vacuum gauge for testing the internal vacuum levels to below 10.sup.-6 torr is disclosed which uses a multipactor discharge means as the source for the electron current used to ionize residual gas molecules. The invention comprises an RF field enhancing cavity which can be constructed of high-vacuum-compatible materials, able to withstand bake-out microwave temperatures and a negatively biased ion collection wave, wire, or grid. A simple ceramic RF feed-through permits simple and noninvasive pressure measurements. The device can be made much smaller than conventional gauges.

Multipactor pressure gauge for use as a noninvasive vacuum tube sensor

Growing community of inventors

Salt Lake City, UT, United States of America

Richard W Grow