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US 6,587,645 B1Granted
Film alignment mechanism and frame counter resetting mechanism
AssigneeFoster Assets Corporation
InventorYet Chan
Life of this patent
Estimating the term…
Abstract
A camera for use with film bearing a series of latent pre-exposed images for subsequent user-exposure, comprises a film sprocket wheel (34) extending into a film passageway, the sprocket wheel comprising a wheel having a plurality of equidistantly-spaced teeth one (42) of which is visually distinguishable from other teeth, for example being formed of a contrasting colour.
Claims12
A camera for use with film bearing a series of latent pre-exposed images for subsequent user-exposure, comprising:
- a film sprocket mechanism extending into a film passageway, the sprocket mechanism having a plurality of equidistantly-spaced teeth including an alignment tooth which is visually distinguishable from the other teeth,
- the sprocket mechanism further comprising a main wheel part on which said other teeth are formed, and a separate part securable to said main wheel part on which said alignment tooth is formed.
A sprocket mechanism for a camera which is drivable by film advanced thereover, said mechanism comprising:
- a sprocket wheel extendable into a film passageway;
- said sprocket mechanism having a plurality of equidistantly-spaced teeth, including an alignment tooth which is visually distinguishable from the other teeth, said teeth being engageable in film perforations to rotate the sprocket mechanism as the film is advanced;
- the sprocket mechanism further including:
- a main wheel part on which said other teeth are formed;
- and
- a separate part securable to said main wheel part on which said alignment tooth is formed.
3 more elements
Dependencies are inferred from the claim text.