Westinghouse Electric Corporation

Arthur E Anderson

Eugene G Vaerewyck

Robert C Miller

Christopher V Reggiardo

Benjamin M Rush

A Faraday rotator optical sensor in combination with optical fiber transmission means is employed to monitor overload current conditions in a high voltage electrical load and transmit this information to a low voltage signal processing circuit while providing desired isolation between the high voltage load and the low voltage signal processing circuit.

Electric motor and transformer load sensing technique

Apparatus for positioning a mirror to reflect solar radiation from the sun onto a remote receiver. Two wide angle, preferably cylindrical lenses are positioned through the mirror, parallel to the reflective face of the mirror, with their optical axes at ninety degrees respectively corresponding to elevation and azimuth. Multi-element photosensors are rigidly affixed behind the mirror so that images of the sun and the receiver can be focused on the sensors. The sensors extend a length equivalent to the field of view through the respective lens encompassing the sun and receiver during the daily and seasonal apparent path of the sun. A selected element of each photosensor is positioned along a line representing the normal to the mirror surface through its corresponding lens. Electrical circuitry and drive apparatus utilize the signals from the photosensors representative of the images of the sun and receiver, and the distance of each image from the selected element, to position the mirror to reflect solar radiation onto the receiver. The mirror is properly oriented where the images are equidistant from the selected element representing the normal. The image of the receiver can be formed by radiation reflected from the receiver back toward the mirror or by additional apparatus such as a steady or pulsed light source.

Heliostat guidance

A battery operated code producing wireless RF alarm detection circuit is designed to continuously monitor the condition of the battery and periodically determine the operational integrity of the detection circuit as well as communicate distinct codes indicative of the operational integrity of the detection circuit and alarm conditions. A local receiver circuit responds to the RF transmitted codes from one or more alarm detection circuits.

Battery operated transmitter circuit

An improved projection color television system in which an optical radiation pattern, which is primary color coded, is generated by cathode ray tube means and optically coupled by projection optics to a projection screen display means. The projection screen display means includes a support substrate which has a plurality of phosphor areas disposed on the substrate with the phosphors areas including at least one primary color emissive organic phosphor composition. The primary color emissive organic phosphor area is optically registered via the projection optics to the corresponding primary color coded portion of the optical radiation pattern generated by the cathode ray tube means. The projection screen itself is thus emissive of the primary color visible radiation.

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Murrysville, PA, United States of America

Arthur E Anderson