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Ken Olsen, chairman and founder of Digital Equipment Corporation ; 1977
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| Number | Title | Issue Date |
| 7237453 | Acceleration pedal module with controllable friction device A power control device for drive motors in motor vehicles, in particular an accelerator pedal, includes an operating lever which may be operated by an operating force against a return force from a rest position on pivoting about a pivot axis. A damping device for da... | 07/03/2007 |
| 7218514 | I/O interface cover assembly of computer enclosure An I/O interface cover assembly includes a panel, a bracket for accommodating an I/O interface element, a driving device, a locking device and a button. The panel defines an opening and a button hole adjacent the opening. The bracket is received in the opening, and ... | 05/15/2007 |
| 6668131 | Tape end detector and video cassette reproducing apparatus A tape end detector includes a first resistor connected between a positive power source and an analog input terminal, a second resistor connected between the analog input terminal and the ground, a first phototransistor the collector of which is connected... | 12/23/2003 |
| 6093925 | Reel sensor and start/finish end detecting device In a reel sensor for a start/finish and detecting device in which a light from a light-emitting element is radiated into an incident light window formed in a video cassette and a start/finish end of a video tape is detected based on an intensity of a ligh... | 07/25/2000 |
| 5794869 | Paper winding device for photographic printer A paper winding device for winding up photographic paper after exposure on a take-up spool in a photographic printer. A loop forming portion for storing exposed portion of the photographic paper in the form of a loop is disposed before the take-up spool. ... | 08/18/1998 |
| 5735475 | Multi-motor film feeding device with planetary gearing A film feeding device for a camera uses first and second electric motors associated with first and second planetary gearing mechanisms, respectively. In one embodiment, the first motor and first planetary gearing mechanism drive a spool shaft of a film ca... | 04/07/1998 |
| 5713532 | Cam gear for actuating a reel brake mechanism in a video cassette recorder A cam gear is provided with a camming groove including an inside camming face and an outside camming face. The inside camming face is divided into a stop mode inner-section of a first constant radius, a play mode inner-section of a second constant radius,... | 02/03/1998 |
| 5699206 | Magnetic recording and reproducing apparatus arranged to save electric power consumed in detecting tape end and reduce load on microprocessor A magnetic recording and reproducing apparatus arranged to use a magnetic tape. The apparatus operates to derive the current taken-up position of the magnetic tape from the signals that are proportional to the rotation frequencies of a capstan motor, a su... | 12/16/1997 |
| 5655724 | Autoreverse cassette tape mechanism with tape-eating prevention A cassette tape transport mechanism is provided with a mechanism for quickly detecting the stoppage of a take-up reel, thereby causing a tape direction change cycle to be initiated before a significant amount of tape can form a jam during a tape eating co... | 08/12/1997 |
| 5557483 | Tape end detection device The detection period of detection unit for detecting a prescribed portion which is provided at at least an end of a tape is decreased in response to the detection of the prescribed portion by the detection unit so that the tape ends can be accurately dete... | 09/17/1996 |
| 5478022 | Overload prevention device of film winding/rewinding motor for a camera An overload protection device for the film winding/rewinding motor of a camera to prevent breakage of the camera by detecting an overload of a winding motor controlled by a one comma switch. The overload detection device includes a driving part, a planeta... | 12/26/1995 |
| 5301896 | Auto rewinder for V8-type video cassette An auto rewinder for a video cassette includes a base, a tape leading mechanism mounted on the base for leading a portion of the tape out of the cassette, a locking mechanism to prevent the actuation of the tape leading mechanism when no tape cassette is ... | 04/12/1994 |
| 5031851 | Driving device for video cassette rewinder An improved video cassette rewinder which comprises a base, a receptacle, a driving device, and a receptacle opening device, etc. The driving device comprises a single belt pulley provided beneath a rewinding shaft and above a receptacle opening device an... | 07/16/1991 |
| 4998686 | Mechanical structure for video tape rewinder A mechanical structure for video tape rewinder comprising a movable base, a main winding head, a motor, a cylindrical combining base for setting the motor in, two gear wheels engaging with the shaft gear of the motor and a gear wheel in the main winding h... | 03/12/1991 |
| 4992811 | Film advancing and rewinding mechanism A motorized film winding and rewinding mechanism includes a take up drum for advancing a film and a motor to drive the take up drum. A spool for rewinding a film is connected to the take up drum through a series of gears so that it rotates in such a manne... | 02/12/1991 |
| 4956731 | Tape feeding direction controlling device for automatic reversing tape recorder A tape feeding direction controlling device for an automatic reversing tape recorder wherein operation of a first or a second high speed operating member during a reproducing operation will cause high speed feeding of a tape in the same or in the opposite... | 09/11/1990 |
| 4932605 | Switching device in a magnetic-tape apparatus of the auto-reverse type The invention relates to a switching device in a magnetic-tape apparatus of the auto-reverse type, comprising a pivotal drive mechanism which is pivotable between two turntables to drive a first turntable in a first position and a second turntable in a se... | 06/12/1990 |
| 4826102 | Apparatus for feed-out of leading film end from roll film cartridge A roll film feed-out apparatus of the present invention has a pressure roller which rotates freely in obedience to the movement of the film. The pressure roller, which is pressed against the film surface when film feed-out operation is executed, enhances ... | 05/02/1989 |
| 4740857 | Tinted tape cassette having an optical tape sensing construction A colorful and aesthetically desirable tape cassette constructed to allow a tape end sensing device, which is built in an audio or video tape recording and playback apparatus, to optically sense an end of a magnetic tape with accuracy and without malfunct... | 04/26/1988 |
| 4718618 | Method for feeding film In a film reader system in which a film provided with a leader film having a width wider than the width of end flanges of a reel around which the film is wound is wound up around another reel, when a wind-back motor is driven at high speed to wind back ar... | 01/12/1988 |
| 4696439 | Tape speed and tension control system for a magnetic tape cassette apparatus A digital tape cassette apparatus having a speed sensing roller in frictional contact with the magnetic tape within a cassette housing at a point intermediate the magnetic head and that one of the cassette hubs operating as the takeup hub during forward t... | 09/29/1987 |
| 4664336 | Motor control apparatus for reel-to-reel tape drive system A motor control apparatus for an unbuffered reel-to-reel drive system including independently operable first and second drive motors including first and second sensors for detecting rotation of reels and a circuit for controlling the drive motors cooperat... | 05/12/1987 |
| 4663573 | Web feeding apparatus with web slowdown In a feeding apparatus wherein a web contained in a supply portion is taken up onto a reel, whereby the web is fed along a predetermined path, there is provided control means for rotatively driving the reel by a motor and controlling the driving current o... | 05/05/1987 |
| 4632333 | Circuit for sensing the rotation stop of a take-up reel in a tape transport mechanism A plurality of sensing means are actuated by the rotation of a take-up reel in a reel-to-reel type tape deck wherein the frequency of activation of switches determines whether or not drive power should be continued to the tape deck drive mechanism. Monost... | 12/30/1986 |
| 4542864 | Brake device for coaxial reel tape recorders A brake apparatus is provided for tape recorders, particularly of the coaxial reel type, in which a single brake pad, mounted on a brake arm, engages a pair of adjacent coaxially disposed drive wheels for coaxial tape reels. The brake arm is biased by a s... | 09/24/1985 |
| 4542865 | Automatic film rewinding device In an apparatus such as a camera which automatically performs film winding and rewinding by means of a motor, an automatic rewinding circuit is arranged to detect interruption of a winding action by means of a timer circuit which is set at a length of tim... | 09/24/1985 |
| 4539609 | Cassette tape recorder In a cassette tape recorder, a base is of a rectangular shape having a transverse length substantially equal to the longitudinal length of a cassette to be inserted. A pair of side walls are attached to opposite longitudinal side edges of the base to face... | 09/03/1985 |
| 4522351 | Motor differential drive reel tensioning system A tape tensioning device for tape recorder drive systems having first and second reels. A mechanical differential is disposed between the reels to permit counter rotation of the reels. A variable torque electrical motor is coupled to the differential for ... | 06/11/1985 |
| 4519558 | Tape player A tape player of small size and weight capable of detecting the end of the tape with a simple mechanism and automatically shutting off the tape player when the end of the tape is detected. The tape player includes a drive gear driven by a motor; a fast sp... | 05/28/1985 |
| 4495534 | Tape player A tape stop detecting mechanism for a tape player includes a chassis carrying (a) a first rotary member having a thrusting portion and rotating while the tape runs, (b) a second rotary member having an engagement portion and rotating irrespective of the r... | 01/22/1985 |
| 4495532 | Tape player A tape operation mode changing mechanism for tape players. The mechanism is provided with a motor and gears for running a tape, a first rotary member adapted to rotate while the tape runs, a thrusting element driven in accordance with rotation of the firs... | 01/22/1985 |
| 4478376 | Method of winding magnetic recording tape A method of winding a predetermined length of magnetic recording tape from a large reel (on which the tape is initially wound), onto a small reel, in which the running speed of the tape is gradually increased at the beginning stage of each winding cycle t... | 10/23/1984 |
| 4437626 | Mechanism responsive to rotation stoppage, and tape recorder with such mechanism An actuating mechanism which responds to the stoppage of rotation of a component, and a tape recorder inculuding such a mechanism. During apparatus operration a reciprocating movement is imparted to a lever. Rotation of the component causes a frictionally... | 03/20/1984 |
| 4405095 | Magnetic tape shifting device A magnetic tape shifting device comprises a movable member for carrying a plurality of reels and a driving mechanism for moving the movable member so that a desired reel carried by the movable member comes to a given position on a stationary member of the... | 09/20/1983 |
| 4385329 | Tape drive control system for pinch roller-less type tape recorder A tape drive control system for a pinch roller-less type tape recorder in which tape drive is implemented by frictional force between the capstan and tape. A mode instruction circuit determines the operational mode of a capstan motor drive circuit which o... | 05/24/1983 |
| 4291843 | Web winding apparatus A web winding apparatus for automatically winding a web, wherein a winding shaft is driven by a driving device, said winding shaft being adapted, in response to the rotation thereof, to generate pulse signals of which interval is detected to identify whet... | 09/29/1981 |
| 4283027 | Tape feeder in a tape recorder A tape feeder in a tape recorder comprising, a pair of reel support drive gears mounted on a pair of reel supports, a pair of tape winding gears capable of being brought into or out of mesh with the corresponding reel support drive gears, a pair of capsta... | 08/11/1981 |
| 4256274 | Tape reversal control A bi-directional magnetic tape recording and playback apparatus having means for assuring the correct operation of the take-up reel. A solenoid-controlled intermediate gear in the drive train to the reel spindles is moved between two operative positions i... | 03/17/1981 |
| 4239166 | Power-driven rewind device of a camera A power-driven rewind device for rewinding a film taken up on a take-up spool shaft onto a supply spool shaft comprises a first gear coupled to and rotatable with the supply spool shaft, a second gear operatively associated with the rotation of a motor wh... | 12/16/1980 |
| 4234139 | Device for the detection of the state of rotation of a shaft, in particular for tape decks A rotatable capacitor of variable capacitance is utilized to produce modulation of a signal, and demodulation of the signal produces a signal usable for determining the state of rotation of a shaft used for rotating the capacitor.... | 11/18/1980 |