The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 1984
Filed:
Feb. 18, 1982
Giuseppe Tarsia, Valley Stream, NY (US);
Berkey Photo, Inc., White Plains, NY (US);
Abstract
An improved transparency holder is provided for use in supporting and positioning a transparency in a light and image projection apparatus, such as a photographic enlarger. It includes a pair of opposed carrier plates having an aperture for coaxial alignment with a light beam. Disposed therein are mask means, which are another pair of opposing apertured plates for releasably holding the transparency therebetween in coaxial alignment with the light beam. The mask means are positioned by registry pin and hole means, and releasably retained thereat by magnetic means. A cassette means also defines an aperture for coaxial alignment with the light beam and is adapted to removably receive the carrier means. Moveable wedge means are externally accessible from the cassette and cooperate with the mask means for selectively releasing the transparency for movement. Bias means within the cassette compresses the mask means to hold the transparency in clamped engagement when the carrier is in the cassette.