Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 5473447 | Heads-up and heads-down displays employing holographic stereograms Heads-up and heads-down displays employing holographic stereograms are provided. The stereograms can be oriented perpendicular to the user's line of sight (the "90° case") or at angle to the line of sight (the "non-90° case"). The stereograms are produc... | 12/05/1995 |
| 5023741 | Programmable limited play video tape cassette A programmable limited play video tape cassette includes a microcircuit that is programmed to provide a play limit signal at the termination of a selected play period based on time, a calendar period or play count. The cassette also includes selected peri... | 06/11/1991 |
| 4907880 | Apparatus for determining angular deviation of an article An apparatus is provided for determining the angular deviation of a randomly angular oriented article from a desired angular orientation in preparation for its engagement by a robotic part handling device. The apparatus projects a rotating image of the ar... | 03/13/1990 |
| 4899244 | Disk cartridge with hub seal A disk cartridge, operable with a disk drive, includes a generally flat-shaped case enclosing a recording medium disposed on a disk about a central hub. The case includes top and bottom walls disposed on opposite sides of the disk, the bottom wall having ... | 02/06/1990 |
| 4843494 | Data storage apparatus using optical servo tracks A magnetic data storage system for use with a double sided disk in which a prerecorded pattern of opaque optical lines is used to define the tracks in which magnetic data is to be stored. A separate optical system including an illumination source and a ph... | 06/27/1989 |
| 4843511 | Magnetic disk cassette having internal biasing ribs A magnetic disk cassette of simplified design is provided for improving the disk cleaning function of a cassette liner and for stablizing the lateral motion of a magnetic disk rotating within the cassette in the region where the disk is coupled to a magne... | 06/27/1989 |
| 4814926 | Flexible disk cassette A flexible disk cassette is provided and includes improved structure for stabilizing flutter of the disk upon rotation of the latter within the cassette, particularly at the access slot where the disk may be coupled to read/write heads for data recording ... | 03/21/1989 |
| 4797761 | Telescoping disk drive assembly A compact apparatus is provided for writing and/or reading information on a disk. Compactness is achieved by mounting various disk drive components on first and second housing sections which are arranged in telescoping relation for movement between a comp... | 01/10/1989 |
| 4731770 | Method and apparatus for controlling transducer The present disclosure relates to a method of and apparatus for positioning a read/write head relative to data tracks on recording media. Included is an approach which enhances the linearity of the sensing range by placing the controller transducer interm... | 03/15/1988 |
| 4712974 | Part positioning apparatus and method A part positioning apparatus is provided for accurately positioning and angularly orienting a variety of different parts or components for pick-up by a robotic part handling device. The apparatus includes a bowl-like part receptacle which is subjected to ... | 12/15/1987 |
| 4700248 | Magnetic head assembly with angled slots A flying magnetic head assembly for use with a flexible magnetic disk is provided with a pair of angled or inclined pressure relief slots formed in a contoured face of the head which is configured to be spaced from the recording surface of the rotating di... | 10/13/1987 |
| 4689696 | Hybrid image recording and reproduction system A system utilizing aspects of both photography and electronic imaging is provided for recording and reproducing an image of scene in color. A camera component of the system photographically records the image on monochromatic film to provide a high resolut... | 08/25/1987 |
| 4656524 | Electronic imaging copier An electronic imaging copier is provided for making enhanced photographic copies of reflection print and transparency types of photographs. The copier initially operates in a preview display mode during which the operator may view and interactively make s... | 04/07/1987 |
| 4656525 | Electronic imaging copier An electronic imaging copier is provided for making enhanced photographic copies of reflection print and transparency types of photographs. An optical image of an original print or transparency is scanned twice to provide first and second sets of image si... | 04/07/1987 |
| 4630069 | Color thermal transfer recording system and ribbon A closed loop thermal transfer recording system and color transfer ribbon having a plurality of different color ink stripes thereon are provided for recording a color tonal image on a recording sheet. Precise control over the size of dots formed by ink tr... | 12/16/1986 |
| 4603337 | Thermal transfer recording medium A thermal transfer ribbon including a resistive heating element layer having a thermally transferable ink layer on the front side thereof is provided with a thermally sensitive indicator layer on the back side thereof. Heat generated in the resistive laye... | 07/29/1986 |
| 4596991 | Thermal recording medium and method A thermally sensitive image recording medium of the transparency type includes transparent support and recording layers and a strippably adhered light reflective background layer which provides a contrasting background against which recorded image compone... | 06/24/1986 |
| 4596993 | Thermal recording system and method A closed loop thermal recording system and method are provided for recording an image represented by pixel areas of varied density on a thermally sensitive recording medium. The system receives electronic image information defining a desired density for e... | 06/24/1986 |
| 4556892 | Thermal transfer recording system and method A closed loop thermal transfer recording system and method are provided for recording an image represented by pixel areas of various density on an ink receiving sheet. The system uses a thermal transfer ribbon having a fusible ink layer on the front side,... | 12/03/1985 |
| 4547784 | Thermal recording system and method A closed loop thermal recording system and method are provided for recording a grey scale image on a transparency type of thermally sensitive recording medium in accordance with electronic image signals. The application of thermal energy to the medium is ... | 10/15/1985 |
| 4542523 | Radiographic intensifying screen manipulator A radiographic apparatus for facilitating insertion of a radiographic element on a carrier into the retractable opaque envelope of a film unit for exposure purposes, and for facilitating its later removal, includes a housing having a light tight chamber f... | 09/17/1985 |
| 4541701 | Photographic processing apparatus A processing apparatus is provided for immersion treating a photograhic film unit with a low viscosity processing liquid. The apparatus comprises a flexible bag-like liquid container having a film unit receiving section and a communicating liquid reservoi... | 09/17/1985 |
| 4518627 | Apparatus and method for disorienting magnetic particles in magnetic recording media An apparatus and method are provided for magnetically disorienting magnetic particles in a magnetic layer of a web coated recording medium that is designed to be used in the manufacture of flexible disks. Disorientation is achieved by subjecting the parti... | 05/21/1985 |
| 4493546 | Processing apparatus and method for treating a film unit with a liquid A processing apparatus for immersion treating a sheet-like film unit with a processing liquid is provided with a flexible liquid container having a film unit receiving section and a communicating liquid reservoir section. The container is mounted on a pre... | 01/15/1985 |
| 4494148 | Compact video slide projector A compact video slide projector provides video image signals representing a recorded image on a 35 mm slide for display on a TV set or video monitor. Compactness is achieved by arranging an elongated video camera at right angles to the slide projection pa... | 01/15/1985 |
| 4469425 | Photographic film processing apparatus A processing apparatus is provided for immersion treating a sheet-like film unit with a processing liquid and thereafter squeegeeing excess liquid therefrom. The apparatus includes a processing tank holding a supply of liquid, a pair of pressure applying ... | 09/04/1984 |
| 4461556 | Film processing apparatus for self-processing film unit with a folded applicator A processing apparatus, for use with a self-processing film unit of the type including a sheet-like photosensitive film component and a low viscosity processing liquid applicator, is configured to apply a longitudinally directed compression force to the f... | 07/24/1984 |
| 4443530 | Self-processing film unit with liquid applicator A self-processing film unit including a sheet-like photosensitive film component as provided with a liquid applicator holding a supply of low viscosity processing liquid that is to be applied to a given area of an outer surface of the film component, foll... | 04/17/1984 |
| 4435062 | Film processing apparatus A film processing apparatus is provided for wetting an outer surface of a film unit with a low viscosity processing liquid supplied from a liquid applicator pad enclosed in a pouch-like container forming part of a multi-container liquid applicator packagi... | 03/06/1984 |
| 4429037 | Self-processing film unit with liquid applicator A self-processing film unit, including a sheet-like photosensitive film component, is provided with a liquid applicator holding a supply of a low viscosity procesing liquid that is to be applied to a given area of an outer surface of the film component, f... | 01/31/1984 |
| 4427276 | Microcomputer controlled photographic exposure system and method A microcomputer is employed in an automatic exposure control system for developing and controlling execution of film exposure strategies for both ambient light exposures and flash and fill flash exposures wherein the scene is illuminated with a mixture of... | 01/24/1984 |
| 4423936 | Photographic exposure control system and method A photographic exposure control system automatically classifies ambient scene lighting conditions as normal, backlit or forelit and then selects an exposure parameter signal program that is appropriate for the indicated conditions. The system monitors a p... | 01/03/1984 |
| 4412276 | Strobe reflector assembly A strobe lighting unit--and a reflector assembly forming part thereof--include a concave reflector having a predetermined shape, typically including a parabolic cross-section. The reflector is formed in situ as part of an assembly process by pressing a th... | 10/25/1983 |
| 4401381 | Processing apparatus for self-processing film unit with a folded applicator A processing apparatus is provided for use with a self-processing film unit of the type including a photosensitive sheet-like film component and a folded and releasably sealed processing liquid applicator secured thereto. The apparatus includes a support ... | 08/30/1983 |
| 4395102 | Bellows for folding camera A folding bellows is provided for use in a folding camera that is movable between erected and storage positions and includes a base section housing having a film plane therein, a pivoting objective lens housing near one end of the film plane, and a pivoti... | 07/26/1983 |
| 4392732 | Folding camera with viewfinder having independently mounted optical elements A compact folding camera having a mirror in its exposure optical path includes a self-erecting and folding viewfinder. Major camera components include a base housing section having a film plane therein, a pivoting lens housing near one end of the film pla... | 07/12/1983 |
| 4389110 | Folding camera A compact folding camera having a mirror in its exposure optical path includes a horizontal base section having a film plane therein, a pivoting lens housing near one end of the film plane, a pivoting mirror assembly adjacent the opposite end of the film ... | 06/21/1983 |
| 4387978 | Folding camera with pivotally mounted viewfinder A compact folding camera having a mirror in its exposure optical path includes a self-erecting and folding viewfinder. Major camera components include a base housing section having a film plane therein, a pivoting lens housing, near one end of the film pl... | 06/14/1983 |
| 4371075 | Modular production line unit and system A reusable universal modular unit, which may be used alone or in combination with one or more similar units to form a production line, is provided for facilitating manual and/or mechanized work or assembly operations on a product supported on a carrier ha... | 02/01/1983 |
| 4360264 | Variable magnification slide copy camera A copy camera, preferably configured to make enlarged prints from 35mm slides, operates in at least two different magnification modes for providing either a full frame or cropped reproduction of the slide on a film unit having an image area format that di... | 11/23/1982 |
