Reusable presentation frame for overhead transparencies

Details Reusable presentation frame for overhead transparencies Reusable presentation frame for overhead transparencies

1994-06-29

1996-12-17

Dowling, William

Optics: image projectors

Picture carrier

353 97, 353DIG3, G03B 2114

Patent

active

055845533

ABSTRACT:
A reusable presentation frame for overhead transparencies that has a view window through which a transparency may be revealed. The presentation frame has a "track" through which an opaque sliding concealment (slider) means may slide and thus conceal a variable portion of the transparency. The presentation frame may be constructed by bonding together multiple levels each having a plurality of borders which define the view window. Starting at the bottom level, the levels may include at least one raiser level, a transparency entrance level through which an overhead transparency may be inserted, a first ledge level, a first track level, and a top frame. The opaque slider may be inserted through the first track level at a side without a border and movably positioned within the presentation frame. Alternate embodiments of the presentation frame may include additional sliders and additional tracks.

REFERENCES:
patent: 3264797 (1966-08-01), Powling et al.
patent: 3269261 (1966-08-01), Porter
patent: 3280493 (1966-10-01), Newman
patent: 3281977 (1966-11-01), Koontz
patent: 3299557 (1967-01-01), Schultz
patent: 3372505 (1968-03-01), Wright
patent: 4203659 (1980-05-01), Constantine et al.
patent: 4679923 (1987-07-01), Nielsen
patent: 4688910 (1987-08-01), Deary
patent: 4732468 (1988-03-01), Wright
patent: 5121984 (1992-06-01), Jones et al.
patent: 5237355 (1993-08-01), Kiehne et al.
patent: 5469235 (1995-11-01), Zako

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