Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 4993587 | Card dispensing apparatus for card vending machine A card dispensing apparatus is disclosed of a type comprising a draw roller for drawing a card to be dispensed from a bottom of a stack of cards and a delivery roller for delivering the drawn card toward an outlet of the apparatus. The card dispensing app... | 02/19/1991 |
| 4933023 | Method for manufacture of non-allergy creating precious metal objects A method for manufacturing a non-allergenic metal object which can be safely worn next to the skin, comprising the steps of: providing an optimum pure starting material selected from a class comprising an optimum pure nobel metal and an optimum pure noble... | 06/12/1990 |
| 4925225 | Vacuum lifting device for handling sheet material A vacuum lifting device is attachable to a crane and operates to lift and subsequently release a sheet of material. The device comprises a support assembly including an eyebolt at its upper end for attachment to the hook, a threaded rod and a coupling nut... | 05/15/1990 |
| 4913676 | Moving animal toy A moving animal toy wherein when a motor is started upper and lower beaks are pivoted up and down simultaneously to widely open and close its beaks, and at the same time a head is slowly rotated twisting its head sideways. When a voice is uttered against ... | 04/03/1990 |
| 4909991 | Variable pipette A variable pipette is disclosed which is so designed that its volumetric capacity for sucking and discharging a sample is variable. A first-stage stroke l1 for sucking and discharging a sample is defined between a first first-stage stop portion... | 03/20/1990 |
| 4907037 | Active chemical transducer with optical fibres and reagent supporting means It is intended for measuring a given characteristic of a fluid medium and comprises at least one assembly having an appropriate reagent for said measurement and serving to interact with the fluid medium, reagent support means, an optical fibre (2) called ... | 03/06/1990 |
| 4902342 | Method for the manufacture of non-allergy creating precious metal objects A method and an apparatus for the manufacture of non-allergy creating objects, especially objects of metal for direct contact with the skin of a human body, for instance jewelery, watches, glasses etc. whereby completely pure metals, especially precious m... | 02/20/1990 |
| 4901458 | Simulated winged insect or the like for advertising display An advertising display including a simulated winged butterfly, bee or the like, and which is rotatably driven by a battery operated electromotor to simulate the flight of a butterfly and draw the customer's attention to the merchandise displayed therewith... | 02/20/1990 |
| 4890875 | Sun visor for automobile A sun visor for use in an automobile wherein a transparent sheet having a suface on which a translucent sheet is attached is used, and the marginal portion of the sheet is supported by a supporting frame. The translucent sheet is a thin film made by vacuu... | 01/02/1990 |
| 4888019 | Articular prosthesis and its preparation process A polymer articular prosthesis having a sliding surface, wherein the latter is constituted by a thin layer of said polymer grafted with tetrafluoro-ethylene. The process for preparing the articular prosthesis comprises coating with a protective varnish th... | 12/19/1989 |
| 4880577 | Process for producing self-restoring over-current protective device by grafting method A process for producing a self-restoring overcurrent protective device by the grafting method, wherein an organic peroxide is added to colloidal graphite, at least one kind of carbon black selected from among acetylene black, Ketjen black and furnace blac... | 11/14/1989 |
| 4860849 | Method and apparatus for elimination of wheel spin of vehicles A method and an apparatus for preventing and, at an early stage, removing wheel spin and a consequent lateral skidding of vehicles while constantly supervising and upon need reducing the momentary torque of the motor by blocking the fuel supply to one or ... | 08/29/1989 |
| 4858418 | Mowing machine A mowing machine adapted to be towed by and in laterally displaced relation to a tractor. The mowing machine has an undercarriage frame and a cross beam to which a plurality of cutting tools are mounted for rotation about vertical axex. Cutter blades are ... | 08/22/1989 |
| 4854058 | Dredging apparatus having a diver-operated hand-held dredge head for quasi-closed loop system Dredging apparatus including a diver-operator controlled and hand-held dredge head which permits the diver to move about freely in the water bed being dredged, and provides for continuously dredging the mixture of water and solids from a first body of wat... | 08/08/1989 |
| 4849829 | Image recording apparatus An image recording apparatus wherein image information is developed by converting the image information into an optical signal and by writing the image information on a drum-shaped image retainer with the converted optical signal to provide latent images ... | 07/18/1989 |
| 4846390 | Automatic soldering apparatus An automatic soldering apparatus wherein a fixture is conveyed sequentially and endlessly by an elevation mechanism of a loading unit, soldering conveyors of a plurality of units that relate to the soldering operation, an elevation mechanism of an unloadi... | 07/11/1989 |
| 4844884 | Cosmetic sunscreen product for the face and body Cosmetic sunscreen products which contain a tyrosine derivative of the formula: ##STR1## in which R1 is H or CH3 --(CH2)x, with X being 1 to 20, and R2 is CH3 CO-- or CH3 --... | 07/04/1989 |
| 4840032 | Refrigerator, more particularly with Vuilleumier cycle, comprising pistons suspended by gas bearings It comprises a first cylinder (102), a displacement piston (104) sliding in the first cylinder (102), a conduit in which a thermal regenerator is included, a second cylinder (202), a second displacement piston (204) sliding in the second cylinder (202), m... | 06/20/1989 |
| 4837946 | Apparatus for floatingly suspending a running web through an arcuate path Apparatus for floatingly suspending a running web without contact and through an arcuate path and including a series of parallel air bars arranged in an arcuate array for discharging pressurized air outwardly therefrom. Either the first or the last air ba... | 06/13/1989 |
| 4836820 | Moving animal toy A moving animal toy consisting of a ski member having a guide slot at the center thereof, a toy member erected on the ski member and having right and left arms holding poles, and a wheel rotatably supported by the toy member and partially projected from t... | 06/06/1989 |
| 4833794 | Dryer apparatus for floating a running web and having baffle means for spent return air Apparatus for floatingly suspending a running web through an elongated dryer, and having a series of air delivering, individual air bars located along the length of the web for discharging air towards the web for supporting the latter, the spent air then ... | 05/30/1989 |
| 4833839 | Panel assembly A panel assembly wherein plurality of upper panels are connected by a plurality of elongated couplers. Each upper panel is made of an elastic material and curved convexly outward at both the side edges thereof and extend in the transverse direction of the... | 05/30/1989 |
| 4830216 | Lid for pressure-heat cooking vessel A lid for a pressure-heat cooking vessel, which is adapted to close or open an opening of the vessel in which food to be cooked is contained, wherein a transparent glass block is mounted in an opening formed in a lid body and held by a retainer to hermeti... | 05/16/1989 |
| 4828165 | Ashtray An ashtray having a small electrode and a large electrode. A high voltage is applied between the two electrodes so that air is caused to flow from the small electrode to the large electrode and that the ionized particles of the smoke adhere to the large e... | 05/09/1989 |
| 4820232 | Voice making device for moving animal toy and moving animal toy using the voice making device A voice making device for a moving animal toy, wherein an air is drawn in by a fan through air suction slits and delivered to a voice generating member with a vibrating piece through an air flow controlling cock, and the air suction slits are opened and c... | 04/11/1989 |
| 4813215 | Mower belt transmission with blade brake A transmission for a multi-blade mower has a belt trained around a driving pulley and successively around driven pulleys for the blades. For driving, an idler pulley of a tensioner engages a portion of the belt that is "downstream" from the last driven pu... | 03/21/1989 |
| 4813908 | Motion toy having action-changing structure A motion toy body consisting of a trunk containing a housing therein, and a head; a frame in the housing which can be vertically moved, and which supports a crankshaft on which left and right feet are mounted so that the feet can be moved forward and back... | 03/21/1989 |
| 4811633 | Adjustable wire stripping apparatus A programmable apparatus for automatically stripping insulation from a wire end being conveyed by a wire conveyor, thereby leaving a portion of exposed conductor. This apparatus includes an insulation cutting mechanism for transversely cutting the insulat... | 03/14/1989 |
| 4810226 | Calling device of motion toy and motion toy using said calling device A calling device and a motion toy for using the calling device are disclosed. The motion toy comprises a body frame having a machine frame inside thereof. Foreleg frames, hind leg frames, and a tail frame are rotataly mounted on the body frame. A nose fra... | 03/07/1989 |
| 4807373 | Loop circuit dredging apparatus A loop circuit method and apparatus for dredging a first area water and in which the water being used to transport the solid material (the dredging water) is continuously routed around in a loop and used repeatedly to convey the solid material from the fi... | 02/28/1989 |
| 4795552 | Natural frequency vibrating screen A horizontal vibrating multi-deck screen apparatus for separating different sizes of materials of generally the same type. The apparatus includes a first or upper screening basket and a second or lower screening basket. The upper screening basket has a fe... | 01/03/1989 |
| 4790576 | Magnet catch A magnet catch wherein a magnet assembly is installed in a case from the front opening in such a way that it can be moved back and forth, an adjust cam is secured to an adjust spindle rotatably mounted to one side portion of the case and disposed in a dir... | 12/13/1988 |
| 4787550 | Automatic soldering apparatus An automatic soldering apparatus wherein a fixture is conveyed sequentially and endlessly by an elevation mechanism of a loading unit, soldering conveyors of a plurality of units that relate to the soldering operation, an elevation mechanism of an unloadi... | 11/29/1988 |
| 4787646 | Riding mower chassis with floating steerable rear wheels The riding mower chassis of this invention has laterally spaced front traction wheels, attachment fittings for a mower that rides in front of those wheels, and laterally spaced rear wheels that can float up and down to accommodate terrain irregularities, ... | 11/29/1988 |
| 4787808 | Trailer A trailer wherein a body frame supports front and rear wheels rotatably at the left and right side portions thereof; a cargo base member has a plurality of rotors for transferring a cargo, arranged rotatably and in a mutually spaced manner on the cargo ba... | 11/29/1988 |
| 4788607 | Tape winding end detecting device of tape recorder A tape winding end detecting device of a tape recorder wherein a reduced speed rotary body is arranged in a driving system from pair of reel mountings to an electric motor, a cam is provided on the rotary body, a switching lever is engaged to the cam so a... | 11/29/1988 |
| 4787547 | Mounting means for air bars Apparatus for drying a running paper web and floatingly suspending it without contact during the drying process, including air bars which are spaced apart from one another along each side of the web and are fed with pressurized air for a supply duct. The ... | 11/29/1988 |
| 4785986 | Paper web handling apparatus having improved air bar with dimensional optimization Apparatus for drying a running paper web and floatingly suspending it without contact during the drying process, including air bars which are considerably larger than conventional air bars, for example, being about five and one-fourth inches square in cro... | 11/22/1988 |
| 4783013 | Jaw crusher toggle beam locking structure The invention relates to a jaw crusher wherein shims behind a toggle beam define various positions of its fore-and-aft adjustment along way slots in which its end portions are guided, and wherein the toggle beam is shifted forwardly away from the shims an... | 11/08/1988 |
| 4780182 | Continuously monitored apparatus and method for determining degree of completion of pulp cook A method and suitable apparatus for periodically analyzing pulp stock, including wood pulp and water, in a pulp digester, to determine the amount of cooking to which the pulp has been subjected. The method includes taking a sample of the pulp stock from t... | 10/25/1988 |
