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
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-31 14:45
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/204
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
An assembly for the insertion and removal of a sheet of film adjacent the face of a cathode ray tube comprising: a first member having an aperture therein for receiving the faceplate portion of said cathode ray tube; a second member having an aperture therein, and being supported on said first member for resilient movement relative to the plane of the face of said cathode ray tube and with its aperture in alignment with said aperture in said first member; a sliding member configured to be received between said first and second member in resilient engagement therewith, said sliding member having parallel embossments for slidingly engaging said first member on opposite sides of its aperture and having an elongate roller supported along its lower edge; and clamp means for retaining said film between the apertures of said first and second members.
Claim 2
Dependent Claim
141 words
An assembly for the insertion and removal of a sheet of film adjacent the face of a cathode ray tube comprising: a first member having an aperture therein for receiving the faceplate portion of said cathode ray tube; a second member having an aperture therein, and being supported on said first member for resilient movement relative to the plane of the face of said cathode ray tube and with its aperture in alignment with said aperture in said first member; a sliding member configured to be received between said first and second member in resilient engagement therewith, said sliding member having parallel embossments for slidingly engaging said first member on opposite sides of its aperture and having an elongate roller supported along its lower edge; and clamp means for retaining said film between the apertures of said first and second members.
Claim 3
Dependent Claim
30 words
An assembly as claimed in claim 1 wherein said elongate roller is proportioned and supported so that its cylindrical surface does not extend to the plane of said sliding member.
Claim 4
Dependent Claim
37 words
An assembly as claimed in claim 1 wherein said elongate roller is proportioned and supported so that its cylindrical surface does not extend beyond the plane of the recessed portion of said sliding member between said embossments.
Claim 5
Dependent Claim
35 words
An assembly as claimed in claim 1 wherein said first member includes a conduit communicating with its aperture for applying a partial vacuum between said film and said faceplate portion of said cathode ray tube.
Claim 6
Dependent Claim
25 words
An assembly as claimed in claim 1 wherein said clamp means comprises an elongate, U-shaped cross-section member pivotably supported for clamping engagement of said film.
Claim 7
Dependent Claim
25 words
An assembly as claimed in claim 1 wherein said first member includes an embossed area encompassing its aperture and having at least two parallel edges.
Claim 8
Dependent Claim
27 words
An assembly as claimed in claim 6 wherein a third edge of said embossed area is beveled for facilitating the sliding engagement of said sliding member therewith.
Claim 9
Dependent Claim
34 words
An assembly as claimed in claim 6 wherein said second member has side embossments with parallel inner edges disposed for edgewise engagement with said two parallel edges of the embossment of said first member.