Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 6600880 | Photographic camera system A photographic camera system includes a photographic camera that can successively expose a photographic film in different frame sizes and an automatic printer for automatically printing the processed photographic film exposed with those different frame si... | 07/29/2003 |
| 6167207 | Film feed device capable of accurately aligning film by using one perforation sensor In a film feed device using a film having two perforations per frame, a perforation width and a perforation interval which are detected by one perforation sensor during a film feed operation are measured as times by timers in a microcomputer or as film mo... | 12/26/2000 |
| 6157787 | Film feeding mechanism In a mechanism for feeding a film, used in a camera, etc., in which a film having one perforation formed at a specified position relative to each frame or a film having a plurality of perforations formed at specified positions relative to each frame with ... | 12/05/2000 |
| 6150651 | Photointerrupter driving circuit capable of decreasing the number of parts In a photointerrupter comprising a light emitting diode and a photo transistor which are opposed to each other, the photo transistor has an emitter which is grounded through a resistor while the light emitting diode has a cathode which is connected to an ... | 11/21/2000 |
| 6122453 | Apparatus and method for film transport and data magnetic writing of an APS camera An apparatus for transporting a film in an APS camera and for magnetically writing data on the film includes a release switch, a single perforation sensing unit, a controller, a film transporting unit, and a data writing unit. After a frame of the film is... | 09/19/2000 |
| 6092936 | Metering/re-cocking member for engaging film during exposure and for re/cocking shutter actuator, separates from shutter actuator when re-cocked A camera comprising a shutter blade supported to move open to expose a frame on a filmstrip, a shutter actuator supported for movement to move the shutter blade open and for movement to be re-cocked, an actuating spring for urging the shutter actuator to ... | 07/25/2000 |
| 5923912 | Perforation detection device and camera provided with the perforation detection device A perforation detection device of a contact piece type to be built into a camera. A detection section of a first contact piece arranged on the rear surface side of a path in which the perforations of a film advance in a film feeding stage is constructed o... | 07/13/1999 |
| 5918082 | Sprocket wheel and lens-fitted photo film unit with the same A sprocket wheel is used with photo film which includes a plurality of perforation groups arranged in a longitudinal direction thereof and cyclically at a pitch predetermined for one frame. Each of the perforation groups includes first and second perforat... | 06/29/1999 |
| 5915137 | Film feed device capable of accurately aligning film by using one perforation sensor In a film feed device using a film having two perforations per frame, a perforation width and a perforation interval which are detected by one perforation sensor during a film feed operation are measured as times by timers in a microcomputer or as film mo... | 06/22/1999 |
| 5899590 | Photographic recording or reproducing device with frame-by-frame film transport The invention relates to a photographic recording or reproducing device, preferably a camera, with a transportation device for the frame-by-frame transportation of a film along a film transportation path and with a film measuring device with an engagement... | 05/04/1999 |
| 5875366 | Sprocket wheel and photo film advancing device Photo film (15) has pairs of perforations (21) arranged at a regular pitch (L1+L2). A photo film advancing device for advancing the photo film by the regular pitch (L1+L2) has a take-up spool (23), which winds the photo film after each exposure. A rotatab... | 02/23/1999 |
| 5845164 | Control apparatus for a camera with an index mark detection feature A control apparatus for a camera using an image recording medium having at least one index mark and a plurality of frames, the control apparatus includes frame transporting portion for effecting the frame transportation of the image recording medium, a de... | 12/01/1998 |
| 5819128 | Film feeding control device A control device for feeding and positioning a film precisely, in a camera, a printing apparatus, etc., includes a photo interrupter with a light emitter, a light detector for detecting a light emitted from the light emitter, and a holding member for keep... | 10/06/1998 |
| 5797053 | Apparatus and method for feeding film having perforations including judging wheter a film tip has passed a detector An apparatus comprises a feeder for feeding the film, a detector for detecting perforations formed on the edge of the film, a controller for controlling the feeder based on the output from the detector. In the apparatus, the operation of the detector is i... | 08/18/1998 |
| 5754903 | Motorized film loading method A film loading method for a camera comprising the steps of opening a door to uncover a chamber for a film cartridge, inserting a film leader which protrudes from the film cartridge through a film ingress slot in the chamber and into engagement with a film... | 05/19/1998 |
| 5732299 | Film transport device for a camera A camera is provided having a film transport device that performs accurate detection of an end of film, even if there is a change in the electric power voltage or film transport mechanism load, e.g., because of a temperature change in the camera. The film... | 03/24/1998 |
| 5708887 | Film feeding control device and method for camera A camera has a feeding motor by use of which photo film is fed. 24 groups of perforations are arranged along one edge of the photo film, and regularly at a distance L2 one group from another. Each of the perforation groups is associated with one frame, an... | 01/13/1998 |
| 5694631 | Camera with film scroll detection mechanism A film scroll detection mechanism for a camera does not require a large encoder for use in controlling the scrolling of the film, while still producing a large number of pulse signals, thereby allowing a camera to be made smaller. A connection mechanism l... | 12/02/1997 |
| 5687415 | Film feeding control device for accurate alignment of film frames and camera aperture A film feeding cessation adjusting device for cameras is capable of accurately stopping to a predetermined stopping position each frame of a film having a minimum number of perforations in order to ensure a sufficient data recording area. The film feeding... | 11/11/1997 |
| 5625850 | Method of controlling film advance When a photographic film cassette is loaded in a camera and a rear lid of the camera is closed, a current adjusting circuit supplies a light emitting element of a photo-sensor with a drive current while stepwise increasing the value of the drive current a... | 04/29/1997 |
| 5606385 | Viewfinder warning flag for photographic camera A film metering mechanism includes a metering slide that is released from a ready position by the pressing of a camera shutter release button such that the film metering slide is pulled by a drive spring and engages a shutter mechanism, temporarily openin... | 02/25/1997 |
| 5603069 | Metered film holding device to prevent film movement in camera A metered film holding device in a camera comprising a metered film holding element supported to enter a film perforation in a metered filmstrip to substantially prevent unintended movement of the filmstrip, is characterized in that the metered film holdi... | 02/11/1997 |
| 5587753 | Film feeding control device for accurate alignment of film frames and camera aperture A film feeding cessation adjusting device for cameras is capable of accurately stopping to a predetermined stopping position each frame of a film having a minimum number of perforations in order to ensure a sufficient data recording area. The film feeding... | 12/24/1996 |
| 5585877 | Sprocket mechanism for cameras A sprocket mechanism for cameras adapted for advancing a film provided with two juxtaposed sprocket holes at regular space intervals includes a sprocket with a body having a couple of pawls spaced apart at a pre-determined distance at a circumferential ri... | 12/17/1996 |
| 5576785 | Film feeding control device for accurate alignment of film frames and camera aperture A film feeding cessation adjusting device for cameras is capable of accurately stopping to a predetermined stopping position each frame of a film having a minimum number of perforations in order to ensure a sufficient data recording area. The film feeding... | 11/19/1996 |
| 5565912 | Film positioning system using dual perforation sensors A method and apparatus for controlling the positioning of a filmstrip in a film scanning gate using signal states derived from a pair of spaced film sprocket holes or perforation ("perf") sensors on either side of the film scanning gate in conjunction wit... | 10/15/1996 |
| 5552848 | Film transport mechanism for camera A film transport mechanism for a camera comprises drive means for advancing a filmstrip beginning with a leading end portion along a defined film path from a film cartridge, and a perforation sensor for detecting a turn-around perforation in a trailing en... | 09/03/1996 |
| 5521666 | Perforation detector of a camera A perforation detector of a camera comprises a light emitting unit for emitting light to a film, a photo-sensor for sensing reflected light from the film to produce a signal representing a sensed light intensity, the light intensity of the reflected light... | 05/28/1996 |
| 5521669 | Frame positioning and shutter cocking mechanism A mechanism for cocking a shutter actuating lever during the one-frame advance of a photographic film having one or two perforations per frame. A cocking lever pushes the shutter actuating lever toward a cocked position when a claw lever mounted on a dist... | 05/28/1996 |
| 5508770 | Film transport mechanism for camera A film transport mechanism for a camera comprises drive means for advancing a filmstrip beginning with a leading end portion from a film cartridge, and a perforation sensor for detecting a turn-around perforation in a trailing end portion of the filmstrip... | 04/16/1996 |
| 5345286 | Method and apparatus for controlling film drive A film drive control system includes a light source that directs a beam at a photographic filmstrip and a sensor located such that it detects this light source depending on whether or not the light source is blocked by the passage of the photographic film... | 09/06/1994 |
| 5323198 | Film winding apparatus A film winding apparatus of a camera for winding and/or rewinding a perforated film. The film winding apparatus includes a photoelectric member that is opposed to perforations of the film to detect presence or absence of the perforations in the film. A pr... | 06/21/1994 |
| 5311228 | Camera with optical film metering and image frame data encodement Film encodement method and apparatus for optically encoding image frame format information on the film in a camera adapted to receive film having film metering perforations along one side of the film which are spaced apart by the length of film frame area... | 05/10/1994 |
| 4996549 | Film feeding control device for camera A film feeding control device for a camera in which film perforations are arranged so as to pass through a detecting section of a photointerrupter during film feeding, which detects the presence of perforations by comparing an output signal from the photo... | 02/26/1991 |
| 4954859 | Motor driven camera A motor driven camera having a motor for winding a film includes a pulse generator which generates one pulse for every perforation of the film in association with feeding of the film, a pulse counter for counting the number of pulses generated by the puls... | 09/04/1990 |
| 4949111 | Camera having film-driven motion transmitting mechanism A photographic camera wherein a film metering sprocket undergoes respective cylces of rotation in each of two opposite directions when a filmstrip is advanced substantially a frame increment in reverse directions over the metering sprocket, and an operati... | 08/14/1990 |
| 4878075 | Camera apparatus for preventing double exposure In a photographic camera, a motorized film transport is operated in a prewind mode to continuously advance successive unexposed frames of a filmstrip from a light-tight cassette to a film take-up, without exposing any of the film frames at the focal plane... | 10/31/1989 |
| 4632530 | Automatic film winding system An automatic film winding system comprising in combination, a mechanical film winding or transport system including an electric motor and an optical film-advance sensing system comprising a light source and a light sensor for sensing the length of the fil... | 12/30/1986 |
| 4401376 | Film design and improved circuit therefor enabling utilization of greater film exposure area An electronically controlled motor advance for film having light transmitting apertures along its edge that interact with a light source and a light sensitive switch for controlling the film advance motor. The usable film size is substantially increased b... | 08/30/1983 |
| 4223990 | Film and photographic apparatus A film magazine contains a roll of film having an image portion and a leader. The filmstrip is perforated at predetermined intervals with larger perforations in the image portion than in the leader. A camera mechanism is disclosed which uses the perforati... | 09/23/1980 |
