Optics: image projectors – Gun – flashlight or battery operated type
Patent
1981-11-30
1983-08-02
Haroian, Harry N.
Optics: image projectors
Gun, flashlight or battery operated type
40364, 353 95, G03B 2100
Patent
active
043962629
ABSTRACT:
A hand-held transparency projector includes a housing having a recess formed in the housing for carrying a film cartridge, and a projection aperture in one end of the housing through which the images on the film in the cartridge may be projected. The housing carries a film-driving mechanism for advancing the film within the cartridge past the projection aperture when the cartridge is carried within the recess of the projector. The film-driving mechanism includes a claw mounted for slidable forward and return movements within the housing, the claw engaging perforations in the film at the end of the forward movement and advancing the film during the return movement in discrete steps of one frame.
REFERENCES:
patent: 1814588 (1931-07-01), De Vault
patent: 2100008 (1937-11-01), Stephens
patent: 2146237 (1939-02-01), Stephens
patent: 2583510 (1952-01-01), Ingram
patent: 2764058 (1956-09-01), Ellis
patent: 3218745 (1965-11-01), Golden
patent: 3466123 (1969-09-01), Skuja
patent: 3801199 (1974-04-01), Kaye
patent: 4059351 (1977-11-01), Wisotsky
patent: 4185899 (1980-01-01), Sherlock et al.
Laizans Vitolds
Richardson John J.
Haroian Harry N.
View-Master International Group
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