Resources Contact Us Home
Film back exchangeable camera and exchangeable film back

Image Number 3 for United States Patent #6402396.

A film back exchangeable camera has a camera body and a film back that can be attached to and detached from the camera body. The camera includes: an aperture formed in the film back, through which photographing light flux passes; a film supplying mechanism that moves a film along a film running surface defined at a rear of the aperture; a shielding member, which is built in the film back and located movably in front of the film running surface and which is movable between a shielding state where a film is not exposed to light and a light transmissible state where the light is transmissible to the film to expose the film; a shielding member driving mechanism that moves the shielding member from the shielding state to the light transmissible state; a forward/reverse rotation motor; and a motor linking switch mechanism by which the forward/reverse rotation motor is switchingly linked with either one of the film supplying mechanism and the shielding member driving mechanism according to a forward rotation and a reverse rotation of the forward/reverse rotation motor. The film supply is executed by the forward rotation of the forward/reverse rotation motor, and the shielding member is moved from the shielding state to the light transmissible state by the reverse rotation of the forward/reverse rotation motor.

  Recently Added Patents
Reusing data in user run book automation
Memory with separate read and write paths
System and method of interfacing co-processors and input/output devices via a main memory system
Thwarting keyloggers using proxies
Spreading technique applied to broadband mobile communications by satelite relying on DVB-RCS
Mixed reactant flow-by fuel cell
Method for operation of multi-layer-multi-turn high efficiency inductors
  Randomly Featured Patents
Single pole arc fault circuit breaker
Longitudinal adjusting device for a vehicle seat
Slide bar interlock
Ionocidium orchid plant named `Haruri`
Machine, and spray assembly and oscillating spray head therefor
Mixed carbonate ester derivatives of quinophthalone dyes and their preparation
Apparatus and method for detecting malicious process
Reflector and light kit for rear of backpack
Device for closing an opening, particularly a street manhole