Card – picture – or sign exhibiting – Photographic transparency viewer – e.g. – x-ray viewer
Patent
1989-09-21
1991-03-05
Dorner, Kenneth J.
Card, picture, or sign exhibiting
Photographic transparency viewer, e.g., x-ray viewer
24545, G02B 2702
Patent
active
049967851
ABSTRACT:
Light box assembly (10) has a removably mountable viewing panel (30), a cabinet (20), and a film media hanging means (40). Upon insertion, the viewing panel (30) is maintained in position by pressure applied by a stopping surface (70) a second surface opposite a camming surface (60) of an arm (62), along with a bottom panel positioner (72). Naturally resilient film (52) is inserted into a film receiving means (50). The film is guided along a guide surface (74) such that the leading edge of the film (52) follows the camming surface (60). Upon reaching film receiving bight (66), the operator releases the film. Due to the film's natural resiliency and the relative positions of the film receiving bight (66), the engaging edge (58), and an outer edge of the viewing panels' notch (32), the film is maintained in a secured position without the need of any moving parts. Such a configuration allows films of various thickness is to be secured.
REFERENCES:
patent: 1803631 (1931-05-01), Mabee
patent: 2549200 (1951-04-01), Hooks
patent: 3896576 (1975-07-01), Wolf et al.
patent: 4010517 (1977-03-01), Kapstad
patent: 4071883 (1978-01-01), Dennis
patent: 4510708 (1985-04-01), Pokrinchak
patent: 4527347 (1985-07-01), Ohison
patent: 4563796 (1986-01-01), Kettlestrings
patent: 4691267 (1987-09-01), Giesberg
patent: 4698930 (1987-10-01), McNair
Bonifanti J.
Dorner Kenneth J.
Picker International Inc.
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