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 |
| 5139388 | Load former--palletizer A machine receives packages in bundles and transports them over a series of conveyors to arrange them in suitable layers for stacking into solid stacks or loads of predetermined form or arrangement for palletizing or other conveying means. Each conveyor p... | 08/18/1992 |
| 5054857 | Convertible chair A chair constructed for alternate use as a conventional seat and back rest is adapted for ready conversion of its back rest to a knee rest. Novel converting means provide for independent conversion, movement, and fine adjustment of the seat and back-knee ... | 10/08/1991 |
| 4861014 | Sheet stacking machine In handling flat sheets as for example from a sheet processing machine to a downstacker a plurality of narrow parallel belt conveyors are necessarily employed. Non-uniformity in manufacture of the belts and different slippage on the pulleys causes unequal... | 08/29/1989 |
| 4805890 | Sheet stacking machine A machine for handling flat sheets employs a pair of conveyors in series to receive the sheets from a processing machine and to deliver them to a downwardly moving platform to form a stack thereon and to deliver the stack so formed. Both conveyors operate... | 02/21/1989 |
| 4793655 | Multi-position convertible therapeutic chair A chair is equipped with a seat rest cushion and support and a separate back rest cushion and support. The cushions are mounted on the chair frame and interconnected by a mechanism which permits swinging the back rest cushion downwards to a knee rest posi... | 12/27/1988 |
| 4765684 | Multi-purpose chair with retractable knee rest Attachments and adjustments are applied to conventional chairs which provide a knee rest normally positioned in a retracted position beneath the seat cushion. Special mechanisms permit withdrawal of the cushion to a position facing the seat cushion and ti... | 08/23/1988 |
| 4737894 | Integral ball point pen and light A ball point pen operating in a conventional manner is modified to incorporate within itself a battery which is wired to electric light bulbs situated near the point of the pen and focusing on the point to aid in writing in the dark or dimly lighted areas... | 04/12/1988 |
| 4708668 | Process of manufacturing an improved electrical connector and product thereof The method of manufacture of an electrical connector and the connector produced thereby employing slotted connecting cylindrical prongs with a pre-vulcanized elastomeric insert is made possible by stretching a strip of elastomeric material until it reache... | 11/24/1987 |
| 4693433 | Unwind stand for web rolls An unwind stand for positioning and controlling the unwinding of large paper rolls to processing machines is mounted on wheels riding on rails and motor driven through hydraulic motor to providing gripping and longitudinal movement of the rolls. Swinging ... | 09/15/1987 |
| 4656675 | Vented urinary drainage device A safe, effective, sanitary device for draining of urine from a male patient which prevents spillage of the urine while preserving the comfort of the patient. The device is made of an elastomeric material which fits around the penis and leads to an exit t... | 04/14/1987 |
| 4653784 | Spring-loaded oscillating cam latch A latch mechanism comprising a latch plate spring biased to a central position by a coil spring located in an opening in the plate. Ends of the spring are held against two stationary pins which extend through arcuate slots to guide the plate.... | 03/31/1987 |
| 4577411 | Wheel for measuring horizontal traveling strip A revolving wheel measures the horizontal length of travel of a moving flat material by contact with the material and connection to an instrument which counts the revolutions of the wheel and converts to length. The wheel is mounted on an arm which in tur... | 03/25/1986 |
| 4574864 | Vertically positioning window shading system This invention is an improvement over my U.S. Pat. No. 4,326,577 for a window screen arrangement comprising a novel roller combination for winding and unwinding the screen or shade element and at the same time positioning of the entire screen assembly in ... | 03/11/1986 |
| 4514461 | Fragrance impregnated fabric This invention is a fabric impregnated with micron-size bubbles in the form of fragile capsules within the interstices between the strands inside the body of the fabric by spraying the capsules in combination with a liquid binder and then putting the fabr... | 04/30/1985 |
| 4513486 | Valve retainer for automotive valve repair A device or tool for facilitating removal of overhead automotive valves for inspection and repair of the stem and sleeves comprising a knob operated toggle mechanism which is inserted in the opening left after removal of a spark plug. The toggle mechanism... | 04/30/1985 |
| 4493235 | Axially adjustable helical cutting blades for rotary web shearing machine A rotary web shearing machine equipped with pairs of rotating helical blades, the improvement for adjusting the clearance between the blades which makes it unnecessary to adjust the blades by their individual holders while the machine is stationary, but m... | 01/15/1985 |
| 4481905 | Aquarium with improved aerator and purifier An aquarium tank has positioned internally on its bottom a combined aerating and purifying cartridge containing suitable filtering media. An air supply is introduced in a dual direction to the interior of the cartridge creating an even circulating flow up... | 11/13/1984 |
| 4456176 | Apparatus for processing and dispensing fertilizer or insecticide A fertilizer or insecticide storage tank is connected to the top of a solution tank. High pressure water fed into the top of the storage tank forces the chemical from the storage tank into the solution tank; a jet is pumped into the curved bottom of the s... | 06/26/1984 |
| 4454175 | Method of applying lubricant coating to bullets Metal jacketed or lead alloy bullets are placed in a tumbler and mixed with a predetermined quantity of steel shot and molybdenum disulphide powder and corn cob grits or other fibrous material. The mixture is tumbled for a predetermined time until the mol... | 06/12/1984 |
| 4434982 | Puzzle-game utilizing movable discs to attain specified arrangement A game comprising a board having a series of connected slots arranged in relation to each other and provided with discs or buttons disposed for movement in the slots. The discs bear numbers and are initially arranged in a given order and then moved with r... | 03/06/1984 |
| 4428457 | Window bracket support and scaffolding for building exterior A window bracket is constructed to be supported on a window sill and the walls beneath the sill of an open window and further constructed to hold a safety scaffold to permit work on the exterior of the building, either on the windows or the area between w... | 01/31/1984 |
| 4423572 | Water-tight insulated roof construction for house A roof construction disposed for superimposing upon an existing roof to provide for heat insulation and water-proofing employs a novel interlocking panel construction which facilitates assembly and insures water-tightness as well as providing for insertio... | 01/03/1984 |
| 4413307 | Bus bar extensions to outside of busway for external connections Vertical bus bars conducting high amperage electric current extend inside a bus way in tall buildings, and feeder connections are on each floor to a local circuit. The improvement is that the feeder connections are entirely outside the bus way. Each feede... | 11/01/1983 |
| 4405278 | Self-emptying dump box A box or container for transporting and disposing of trash is constructed to be operated by the action of a forklift truck alone without the addition of special accessories and so constructed as to have a low overall height making it suitable for placemen... | 09/20/1983 |
| 4393510 | Reactor for production of U-233 The production of a novel nuclear fuel utilizing clean uranium 233 in combination with other nuclear materials is made possible by utilization of an equally novel reactor configuration and method of operation. Clean uranium 233 is produced from thorium in... | 07/12/1983 |
| 4381281 | Reactor and process for production of novel nuclear fuel The production of a novel nuclear fuel, utilizing uranium 233 low in uranium 232 content in combination with other nuclear materials is made possible by utilization of an equally novel reactor configuration and method of operation. Uranium 233 is produced... | 04/26/1983 |
| 4380190 | Cooking cone By the herein cooking cone, simultaneous cooking of the inside and outer side of food is accomplished through heat flow through the center of the heat conductive cone whereby food is cooked from the center or core of the cone, while the oven heat permeate... | 04/19/1983 |
| 4365776 | Double safety manually releasable strap connector A double safety manually releasable strap connector employs a male and a female member and latching devices to releasably connect the same, including a rotatable inter-connecting element in the female member. A manipulating lever is connected to the rotat... | 12/28/1982 |
| 4362691 | Process of operating a nuclear reactor to minimize production of U-232 The production of a novel nuclear fuel, utilizing uranium 233 low in uranium 232 content in combination with other nuclear materials is made possible by utilization of an equally novel reactor configuration and method of operation. Uranium 233 is produced... | 12/07/1982 |
| 4358229 | Cylinder boring machine stand An apparatus facilitates the support and positioning of an engine block for the purpose of boring the cylinders thereof and the support and positioning of the boring machine used simplifies the operation and permits it to be performed with greater ease, s... | 11/09/1982 |
| 4326577 | Vertically positioning window shading system A window screen arrangement comprises a novel roller combination for winding and unwinding the screen or shade element and at the same time providing for positioning of the entire screen assembly in any desired position vertically on a window to provide p... | 04/27/1982 |
| 4313548 | Handlebar pack and support for bicycle A pack or carrier bag for attachment to the handlebars of a bicycle utilizes a specially constructed combination of a cleat fastened to the bag which is engaged by a hook which in turn engages the handlebar structure and the combination provides for rapid... | 02/02/1982 |
| 4272372 | Global aquarium with aerator and purifier An aquarium for fish and other forms of marine life is constructed in the form of a globe symbolic of the planet earth and equipped with a special device for aerating and purifying the water. The unique shape of the aquarium lends itself readily to purifi... | 06/09/1981 |
| 4258870 | Pannier bags and device for attachment to bicycle Carrier bags known as panniers are adapted for mounting upon the existing rear luggage carrier of a bicycle by means of specially constructed brackets arranged for mounting across the carrier frame. A novel construction and combination permits ready attac... | 03/31/1981 |
| 4236265 | Portable traction apparatus A portable bed, cot or "gurney" is modified to produce an apparatus which permits movement of a patient while under full traction. This is accomplished by a novel arrangement of stanchions, longitudinal and cross-bars supporting pulley rope and spring arr... | 12/02/1980 |
| 4219218 | Halter type cover for car front protection A halter type protective cover is constructed to fit snugly over the front part of the hood and front fenders of a car to protect the finish from dirt, bug stains, road grime, tar, flying particles, stones and similar damaging materials. It is constructed... | 08/26/1980 |
| 4212261 | Golf score keeping device A device for keeping a golf score comprises two flat panels fastened to provide a space in between. The first face is equipped with nine horizontal slots, numbered 1 to 9 and the second face an equal number of slots numbered 10 to 18 representing the hole... | 07/15/1980 |
| 4190920 | Garbage chute clearing device A device for clearing plugged garbage chutes is specially constructed to make it adaptable for use in multi-story buildings, such as apartment houses, having vertical chutes extending through several stories down to a receptacle in the basement of the bui... | 03/04/1980 |
| 4080596 | Bingo game indicator A lighted display board or sign has a viewing face subdivided into 25 squares arranged five by five simulating a Bingo playing card and having a separate light positioned behind each square. An unusual circuit and switching arrangement makes it possible b... | 03/21/1978 |
| 4073327 | Magnetic head hammer A more or less conventional claw hammer is equipped with a special magnetic insert in its head for convenience in picking up nails and tacks prior to driving with the hammer. The special magnetic insert is comprised of high carbon hardened steel which is ... | 02/14/1978 |
