Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 4529825 | Method for the preparation of a trans-isomer of ethylenically unsaturated organic compounds The trans-isomer of an ethylenically unsaturated organic compound of the formula R1 CH.dbd.CHR2, in which R1 and R2 are each a substituted or unsubstituted monovalent hydrocarbon group, is selectively prepared i... | 07/16/1985 |
| 4518228 | Zoom lens An optical system of zoom lens has four lens groups or, from front to rear, a first lens group of positive power for focusing, a second lens group of negative power for variation of the image magnification, a third lens group of negative power for image s... | 05/21/1985 |
| 4518020 | Drive assembly for producing a nonuniform output from a uniform input A drive assembly or gear unit is formed with a drive unit which is rotatably supported on a power output shaft between two bearing positions on the output shaft. The drive unit includes a pair of crankshafts which are offset relative to each other by 180Â... | 05/21/1985 |
| 4488800 | Photographing mode display device of a camera Object brightness information is measured and diaphragm aperture value is appex operated using the setting information of mounted lens and the photographing conditions an input to effect ON-OFF control of an automatic-manual change-over means. The change-... | 12/18/1984 |
| 4453342 | Battery operated spinning top A spinning top comprises a casing of pear shaped appearance. From the lower (pointed) end of the casing extends a stem which is springily urged out of the casing and which - when hit by a racket - moves inwardly, and closes the circuit of a small electric... | 06/12/1984 |
| 4424808 | Wide bandage fabric The invention relates to a fabric which is highly longitudinally elastic in the warp direction and easily tearable in the weft direction, or highly longitudinally elastic in the weft direction and easily tearable in the warp direction, or highly longitudi... | 01/10/1984 |
| 4421397 | Automatic focusing system with interchangeable lens In the disclosed system, an accessory unit arranged to hold a power source operates with a camera and a current supply circuit supplies current to electrical parts in a controllable interchangeable lens through electrical connection means in the lens in r... | 12/20/1983 |
| 4410884 | Alarm system An Alarm system for furnishing an alarm signal in response to unauthorized entry through a passage connecting the outside to the interior of a building, wherein a first detecting device furnishes a first output signal when sensing the presence of a person... | 10/18/1983 |
| 4408031 | Process for the preparation of heat-curable silicone resins usable especially as electrical insulating resins The invention relates to a process for the preparation of heat-curable resins, usable especially as electrically insulating resins, by the reaction of alkoxy siloxanes of the formula ##STR1## in which OR1 represents an alkoxy group of prim... | 10/04/1983 |
| 4407500 | Racket handle A handle for a racket of the type used in playing tennis and like sports includes an elongated shaft portion, a hollow grip portion attached to one end of the shaft portion and a frame portion connected to the other end of the shaft portion. The shaft por... | 10/04/1983 |
| 4406089 | Cable window driving mechanism for motor vehicles A window driving assembly particularly for a motor vehicle having an elongated guide rail upon which a driven member having a windowpane supported thereon is mounted for sliding guided movement between two terminal positions. A cable extends from a cable ... | 09/27/1983 |
| 4405328 | Preparation for shrinkproofing wool The invention relates to an aqueous preparation for shrinkproofing wool, which contains, as active ingredient, organopolysiloxanes of a particular structure with mercaptoalkyl or mercaptoaryl radicals and hydrogen atoms. The preparation is storage-stable ... | 09/20/1983 |
| 4405222 | Mode setting device for camera A camera exposure mode setting device including a dial which can be moved to select a number of different exposure modes, one of which is controlled by a self-timer circuit in the camera. The device also includes circuitry coupled to the dial which operat... | 09/20/1983 |
| 4400072 | Diaphragm device for a camera with interchangeable lenses The present invention relates to a diaphragm device for a camera, particularly making use of the property of matter in such a manner that the light permeable characteristics of the matter is changed by applying the control signal to the matter so as to fo... | 08/23/1983 |
| 4388492 | Miniature stereo device with extensible speakers A miniature stereo device which provides a satisfactory stereo effect includes a main body having an audio device which generates a stereo output, and a pair of speakers positioned at both sides of the main body for reproducing the stereo output. One of t... | 06/14/1983 |
| 4383882 | Apparatus for sealing inserts between sheets of plastic material A device is arranged to seal inserts between a pair of plastics material sheets. The device includes a double belt press forming a heat sealing press and made up of a pair of press belts one located above the other. Each of the press belts includes an inl... | 05/17/1983 |
| 4383745 | Camera and automatic exposure control therefor for use with various types of flash units In the disclosed camera, a switchover arrangement automatically shifts from an automatic exposure mode to a flash mode in response to a charge completion signal from a flash device. A line electrically connects a terminal capable of receiving the charge c... | 05/17/1983 |
| 4381145 | Single lens reflex camera In the single lens reflex camera disclosed, an elongated entrance window extending across a plane through the roof ridge of a roof pentaprism, and a smaller entrance window more remote from the plane, form a pair of windows, one of which produces light em... | 04/26/1983 |
| 4378732 | Tying apparatus for agricultural roll balers Apparatus for forming roll bales of agricultural harvest material operating to helically tie the roll bales with twine is provided with a twine guide member moving along a front intake aperture of the baler and automatically controlled by a ratchet and pa... | 04/05/1983 |
| 4378858 | Driven steering shaft assembly A driven steering shaft assembly especially for a planetary steering shaft is formed with a universal joint interposed between an axle shaft extending from a differential and a steering shaft for driving a wheel hub or the inner central gear of a planetar... | 04/05/1983 |
| 4376571 | Photographic small size objective A photographic small size objective of the modified Gauss type which is well corrected for high grade imaging performance. The objective comprises, from front to rear, a first lens in a meniscus form of positive power with its convex curvature toward the ... | 03/15/1983 |
| 4375915 | Shutter time control camera A camera includes a drive source which generates a driving torque for moving shutter curtains in response to electrical battery power, and controls the running of the shutter curtains by the driving torque from the drive source. When the battery voltage i... | 03/08/1983 |
| 4375863 | Mechanism for automatically closing a storage container A mechanism for closing the cover of a storage container, such as a container for an assortment of items or parts, includes a stop pin slidably mounted in a guide sleeve for movement into a first position where it engages a support lever attached to the c... | 03/08/1983 |
| 4372664 | Moisture- and dust-proof device for rotating operation part of camera A moisture- and dust-proof device for a rotating operation member of a camera has a receiving seat for the rotating operation member, such as a film sensitivity value setting dial or a shutter speed setting dial, formed with a visco-elastic material such ... | 02/08/1983 |
| 4372521 | Adjusting mechanism for the seat of an automobile Adjusting mechanism for a seat, particularly a seat of an automotive vehicle, in which the seat rests on carriers elongated in the direction of shifting movement, seat shifting guides being interposed, and the carriers being equipped with integrally conne... | 02/08/1983 |
| 4371681 | Bromine containing allylcarbonates There are provided the novel compounds 2,2-bis-(bromomethyl) propane diallyl carbonate and 2,2-bis-(bromomethyl) propane dimethallyl carbonate, a process for the production of these and flame retardant polymers which contain these as flame retardant agent... | 02/01/1983 |
| 4368956 | Compact photographic objective The objective disclosed includes, from front to rear, a positive meniscus lens of forward convexity, a negative lens, a positive lens, and a negative meniscus lens having an aspheric front surface concave toward the front, and fulfills the following requi... | 01/18/1983 |
| 4367937 | Motor driven camera A co-ordination control system for a camera and a motor drive unit with separate electrical power sources one of which has a higher voltage than the other. The system is provided with an interface circuit including two switching elements arranged to coope... | 01/11/1983 |
| 4366967 | Coupling hook assembly A coupling hook assembly having a hook body defining an enclosed hook pocket with a locking bolt extending from a first aperture in the hook body into operative engagement with a hook jaw to lock and unlock an implement pin for joining a trailer with an a... | 01/04/1983 |
| 4366654 | Double-walled tank for low-temperature liquids In a double-walled tank for low-temperature liquids, such as a liquid gas, an inner tank forms a primary safety casing while an outer tank, enclosing the inner tank, forms a secondary safety casing. The inner tank includes a base and an upwardly extending... | 01/04/1983 |
| 4367494 | Video recorder-player and horizontal sync separator therefore In the disclosed recorder-player, an image signal is converted to multi-channel signals and a horizontal synchronizing signal is obtained therefrom by separating a synchronizing signal from the multi-channel signals to operate a flywheel oscillator, and b... | 01/04/1983 |
| 4365961 | Friction clutch including rolling bodies for transmitting a limited torque In a friction clutch a first disc-shaped driving member and a second disc-shaped driving member are held in frictional contact by a spring so that the driving members rotate coaxially, each driving member has a facing surface directed toward the other. Ro... | 12/28/1982 |
| 4365878 | Signal processing circuitry for a distance measuring system For a distance measuring system in which a light measuring arrangement responds to changes in light to establish distances, a processing circuit includes a quasi-compression device that receives the electrical signal from the light measuring arrangement a... | 12/28/1982 |
| 4366514 | Magnetic reproducing apparatus A magnetic reproducing apparatus for reproducing recorded contents of a magnetic tape with the use of a reproducing head comprises a magnetic tape, a magnetic reproducing head, a tape drive mechanism, means for detecting an interlude or a cease period of ... | 12/28/1982 |
| 4366501 | Image recording system An image recording system in which an object image is caused to be formed on a solid state image transducer such as CCD each time a release is actuated, and the image signal stored on said image transducer is recorded as a video signal, thus a single fram... | 12/28/1982 |
| 4366324 | Process for concurrent preparation of organosiloxanes and methyl chloride The invention provides a novel continuous process for concurrently producing methyl chloride and organosiloxanes by the reaction of an organochlorosilane and methyl alcohol in an aqueous reaction medium at 70° to 150° C. Different from conventional proc... | 12/28/1982 |
| 4365880 | Indicator for camera In the disclosed indicator, a display responds to various photographic modes, i.e., shutter preference, program, etc. A control arrangement connected to the display changes the display in response to a control signal indicating that a selected shutter tim... | 12/28/1982 |
| 4365418 | Drill stand with marking element On a drill stand, a drilling member is movable between an inactive position spaced from the material to be drilled and an active position in contact with the material to be drilled. A marking element is mounted on the stand and is slidably movable between... | 12/28/1982 |
| 4365060 | Enterosoluble capsules The invention provides a novel enterosoluble capsule for containing a medicament, which is shaped with a hitherto not used novel cellulose derivative. The cellulose derivative is a mixed ester of an alkyl-, hydroxyalkyl- or hydroxyalkyl alkylcellulose est... | 12/21/1982 |
| 4364970 | Method for improving surface properties of shaped articles of polyvinyl chloride resins A novel method is proposed for improving the surface properties or, in particular, for reducing accumulation of static electricity on the surface of a shaped article of a vinyl chloride-based resin. The inventive method comprises first exposing the surface of ... | 12/21/1982 |
