Film insertion and removal device for use with a cathode ray tube

Abstract

Abstract An assembly which facilitates the insertion and removal of a sheet of film which is positioned adjacent the face of the cathode ray tube. Film, such as that employed in photochromic techniques, positioned against the face of a cathode ray tube generating an ultra-violet beam, for example, can be drawn into intimate contact with the faceplate of the cathode ray tube by means of a partial vacuum applied between the film and the faceplate through a conduit in a member of the assembly which receives the faceplate portion of the cathode ray tube. Because of the chemical coatings on the film and the warmer temperature associated with the operation of photochromic equipments, the film frequently sticks to the faceplate. Since photochromic film has limited life, it requires relatively frequent replacement which is accomplished by inserting a sliding member between first and second members, the sliding member having a roller positioned along its bottom edge and parallel embossments along its sides for ''''peeling'''' the film from the faceplate of the cathode ray tube without marring or disfiguring the surface of the faceplate.

Inventors

• 👤 John Marez
• 👤 Alan R Hatch

Bibliographic Details