U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 396/407 - Prewind


Subclass of Class 396 - Photography
Definition: Subject matter wherein the electrical or electronic device
No. of patents: 28
Last issue date: 07/08/2003


NumberTitleIssue Date
6591067Film pre-winding mechanism for 35 mm film format still cameras
A mechanism to be used in 35 mm film format still cameras, which pre-winds a roll of unexposed film entirely by motor to the unexposed film chamber provided in the camera immediately after the camera back door has been closed with the unexposed film loade...
07/08/2003
6233406Camera having film winding apparatus
A camera having a manual film winding apparatus in which a film is wound in association with a rotation of a winding operation device from a wind start position to a wind end position includes: an encoder which rotates in association with the movement of ...
05/15/2001
5742857System for reproducing film image
A mechanism, for reproducing images of a developed film, which reads film information recorded in a magnetic track formed along a pair of edges extending longitudinally of a leader of the film. The reading of the magnetic track is carried out by pressing ...
04/21/1998
5678081Photographic camera having a picture size switching device
A photographic camera including a picture size switching device adapted to switch the picture size between a regular size, for example, of 36 mm×24 mm and a panoramic size, for example, of 65 mm×24 mm, wherein, when it is intended to switch the picture ...
10/14/1997
5521667Camera utilizing a push-out type film cartridge
A camera utilizes a push-out type film cartridge which is so constructed that the revolution of a feed spool equipped therein feeds out the film. The camera comprises a film feeding means capable of blank feeding the film by driving said feed spool, and a...
05/28/1996
5508767Prewind film feed control device that ensures alignment of film frame with camera aperture
A film feed control device of a camera in a prewind method in which unexposed film is pulled out from a loaded film cartridge and rewound into the film cartridge for each photography comprises a frame number memory for storing an exposable frame number of...
04/16/1996
5504549Prewind film feed control device that ensures alignment of film frame with camera aperture
A film feed control device of a camera in a prewind method in which unexposed film is pulled out from a loaded film cartridge and rewound into the film cartridge for each photography comprises a frame number memory for storing an exposable frame number of...
04/02/1996
5467156Camera having different supply modes selectable for a film
This invention relates to cameras operable to select one film supply system from either a normal wind-up system or a preparatory wind-up system. The camera has a selector switch for selecting one of the film supply systems, and an inhibiting means for inh...
11/14/1995
5459540Camera with magnetic head in contact with film during pre-wind
A camera, capable of loading a cartridge housing a film which is provided with image recording areas and a magnetic recording area in which plural sets of a same magnetically recorded information are consecutively recorded along the longitudinal direction...
10/17/1995
5414482Prewinding control device of camera
A pre-winding control device of a camera which continues pre-winding from where it left off after a power failure interruption and battery replacement. When a patrone is loaded in the camera, the total number exposures is read from the patrone and the rea...
05/09/1995
5398090Camera winding-up apparatus
A camera film wind-up apparatus for winding up a film wound around a cartridge spool, the film being housed in a cartridge having the cartridge spool, comprises a first driving apparatus for rotatably driving the cartridge spool, a wind-up spool around wh...
03/14/1995
5349406Camera and method for bypassing fogged photographic film
A method of bypassing film that is inadvertently fogged in a pre-wind camera includes detecting the opening of the camera back, storing the frame number corresponding to the opening of the camera back, determining which frames are fogged, and bypassing th...
09/20/1994
5337107Preparatory winding type camera
A preparatory winding type camera wherein one frame is rewound after the whole film in the patrone is previously wound up, and thereafter, the film is automatically rewound into a patrone frame after frame each time a shutter release is performed. During ...
08/09/1994
5325141Camera control device
A camara control device continues a pre-winding or a first frame setting when a pre-winding or a first frame setting is stopped in the middle because a battery of the camera is taken out or because of exhaustion of the battery and after that another batte...
06/28/1994
4918474Camera
A motor-driven camera of the prewind type arranged to perform a preliminary film winding action continuously from an automatic film loading onto a take-up spool before photographing and, thereafter, to rewind the film for every photographing shot includes...
04/17/1990
4910543Camera
A motor-driven camera of the so-called prewind type in which a film is preliminary wound to effect a prewinding action and then the film is rewound for every photographing shot, includes an electric film counter which counts the number of frames on the ba...
03/20/1990
4885599Pre-winding control device for a camera
A pre-winding control device of a camera includes a sensor for detecting a predetermined length of a flimstrip, a film drive device for pre-winding the film strip before exposures and for rewinding the film strip after exposures, and a pulse generator for...
12/05/1989
4878075Camera 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
4717931Fail-safe film prewinder for cameras
A fail-safe film prewinder for a camera. The prewinder has a mode switch which can be changed over by switching to a photographing mode upon completion of a prewinding mode in which a film is continuously pulled or prewound from a film cartridge loaded in...
01/05/1988
4678303Film-on-spool sensor for determining mode of operation of film transport mechanism in camera
A photographic camera has a motorized film transport mechanism which is operable in a load mode after a light-tight cartridge containing an unexposed filmstrip is loaded into the camera and is operable in an expose mode for picture-taking. In the load mod...
07/07/1987
4676621Frame counter initialization sensor for triggering film rewind when camera door opened prematurely
A photographic camera has a motorized film transport mechanism which is operable to continuously prewind substantially the entire length of a filmstrip from a light-tight cartridge onto a take-up spool without exposing any of the frames on the filmstrip a...
06/30/1987
4671636Film-on-spool sensor for triggering film rewind when camera door opened prematurely
A photographic camera has a motorized film transport mechanism which is operable normally to prewind substantially the entire length of a filmstrip from a light-tight cartridge onto a take-up spool without exposing any of the frames on the filmstrip and t...
06/09/1987
4504131Camera
In the disclosed camera, film is continuously wound from the shaft of a film magazine loaded in the camera onto a spool in the camera, and then exposed frame by frame as the film is rewound into the camera. A motor drives either the spool or the magazine ...
03/12/1985
4460256Film feeding system of a camera
A film advancing system of a camera in which a roll of film inside a film cartridge is first wound to a spool and then the film is rewound into the cartridge one frame from another after each photographic operation is provided. The system includes a rever...
07/17/1984
4367026Automatic camera
In an automatic camera, as a film roll is loaded, the film is once wound up to its terminal end in response to a signal which indicates the closure of a rear lid of the camera. During such time, the number of film perforations is counted to allow the numb...
01/04/1983
4362370Automatic film transport device
An automatic film transport device for use in cameras has a first function of (i) automatically completely unrolling an unexposed film from a film case or magazine and winding it on a take-up reel or spool and a second function of (ii) automatically rewin...
12/07/1982
4342509Film feeding device of a camera
In a film feeding device of a camera including a preparatory wind-up device for winding up on a supply spool, before exposure, a roll film in a film magazine loaded into the camera, and a second wind-up device for rewinding into the magazine the unexposed...
08/03/1982
4251148Photographic camera
A photographic camera has a housing provided with a film loading chamber, a film storage chamber and a film window. An arrangement is provided for transporting unexposed film from the loading chamber to the storage chamber and for subsequently transportin...
02/17/1981
 
Sign InRegister
Username  
Password   
forgot password?