Abstract A still camera wherein a spring-biased pressure plate is mounted on a movable wall of the housing and is provided with apertures adjacent to the marginal portions of roll film which is guided in a channel in front of the pressure plate. The movable wall further supports a spring-biased plate-like carrier which is located behind the pressure plate and is provided with braking members extending through the apertures of the pressure plate and into the channel to engage the respective marginal portions of roll film in the channel and to prevent uncontrolled lengthwise movements of the film. The braking members have convex filmengaging surfaces and bias the respective marginal portions of the film against guide surfaces provided on the main body portion of the camera housing. When the channel is empty, the carrier abuts against the rear side of the pressure plate.
Inventors
👤 D Engelsmann
👤 K Zattler
👤 F Kessler
👤 D Mass
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-03 06:31
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
20 words
A combination as defined in claim 1, further comprising biasing means for yieldably urging said braking members into said channel.
Claim 2
Dependent Claim
15 words
A combination as defined in claim 1, wherein said braking members have convex film-engaging surfaces.
Claim 3
Dependent Claim
40 words
A combination as defined in claim 1, wherein said housing is provided with guide surfaces located opposite said braking members so that said braking members urge the respective marginal portions of the film in said channel against such guide surfaces.
Claim 4
Dependent Claim
38 words
A combination as defined in claim 1, wherein said housing comprises a main body portion and a wall movable with reference to said main body portion, said pressure plate and said braking members being mounted on said wall.
Claim 5
Dependent Claim
71 words
A combination as defined in claim 5, wherein said braking members are arranged to urge the respective marginal portions of the film in said channel against said main body portion of said housing. 7. A combination as defined in claim 1, wherein said pressure plate is provided with a plurality of apertures along each side of said channel and the number of said braking members equals the number of said apertures.
Claim 6
Dependent Claim
136 words
In a photographic apparatus, a combination comprising a housing defining a channel for lengthwise transport of photographic film; a spring-biased pressure plate adjacent to one side of said channel, said pressure plate having at least two apertures adjacent to different marginal portions of the film in said channel; braking members mounted in said housing and extending through said apertures and into said channel to engage and to apply a braking force against the respective marginal portions of the film in said channel; a carrier supporting said braking members; and biasing means disposed between said carrier and said housing to bias said carrier against said pressure plate in the absence of film in said channel and to bias said braking members against the respective marginal portions of the film when such film is located in said channel.
Claim 7
Dependent Claim
13 words
A combination as defined in claim 8, wherein said carrier is a plate.
Claim 8
Dependent Claim
17 words
A combination as defined in claim 8, wherein said biasing means comprises at least one leaf spring.