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 |
| 4883012 | Dual-purpose water craft A recreational water craft useable as a vehicle and as a swimming facility has first and second floatable components, the first having a deck supported by a pair of compartmented pontoons. The compartments have water and air inlet and discharge facilities... | 11/28/1989 |
| 4695085 | Sheet carrier A hand held sheet carrier for use with plywood and wallboard sheets has a pair of rigid plate components that are pivotally interconnected. One plate component has an upright working position, a foot portion on which a sheet being carried is supported and... | 09/22/1987 |
| 4645466 | Surfboard user's foot piece and new combinations therewith An improved foot piece for use with a surfboard type water craft that has a flat top surface which is equipped with a loop bearing surface component having a generally planar outwardly and upwardly facing surface portion with a multitude of small, closely... | 02/24/1987 |
| 4609075 | Shopping cart disabling device A shopping cart disabling device features the use of pressurized gas from a container for actuating a piston in a cylinder therefor so as to provide a ground contacting probe that serves to disable the cart, the gas container being located in the piston c... | 09/02/1986 |
| 4602536 | Hand tool for opening split rings A split ring opening hand tool is shown in the form of a modified pair of long nosed pliers. One jaw carries a support for a split ring while the other jaws carries a probe that passes between the convolutions of the split ring as the jaws are moved to th... | 07/29/1986 |
| 4548586 | Outboard motor mounting device and combinations therewith An outboard boat motor utilizes a universal coupling between the upper section of a mounting device that is attached to the hull of a boat and the lower section of the mounting device to which the motor and impeller are secured. The coupling permits unive... | 10/22/1985 |
| 4497453 | Dispenser for internally self-supported rolled material The invention has to do with a wall dispenser for rolled plastic material that is internally self-supported and without the aid of a cylindrical core component. The dispenser has a pair of rollers on which the roll rests and which are so supported in end ... | 02/05/1985 |
| 4479445 | Adjustable embroidering tool An embroidering tool has an adjustable needle penetration capability and is formed from two interfitting components that are relatively rotatable about a common axis to provide the adjusting movement. One part has a cannulation needle assembly in accord w... | 10/30/1984 |
| 4404925 | Air hose guide A painter's air hose guide has a flat web portion with oppositely facing surfaces and a rear side edge that is adapted to be wedged between the supporting surface for a vehicle wheel and its tire tread. A pair of flanges are symmetrically joined to the we... | 09/20/1983 |
| 4393543 | Shrimp processing and handling apparatus An eviscerating apparatus uses a belt conveyor for transporting preoriented shrimp through an uncurling mechanism, a cutting mechanism and a washing device for removing the digestive tract from the shrimp body parts. The curled body parts are preoriented ... | 07/19/1983 |
| 4377303 | Closure latch mechanism improvements A closure latch mechanism has a slide component linearly movable between latched and unlatched positions, the component having a planar body portion with a flat, resiliently bendable member that is formed as an integral part of the body portion and normal... | 03/22/1983 |
| 4377284 | Basketball training device A basketball player's training device is designed to maintain the player's elbows in close proximity when making practice shots. It includes a pair of sleeves that are stretchable and snuggly fit over the forearms of the player adjacent to the elbows, and... | 03/22/1983 |
| 4375869 | Protective covers or enclosures for mailboxes A rural mailbox cover has a slat assembly which overlays the arcuate roof and opposite side walls formed by a center panel of the mailbox, the assembly having parallel slats of equal lengths which are arranged in a row and joined by elongated flexible and... | 03/08/1983 |
| 4341983 | Automatic sequence control system An automatic system for controlling a plurality of motors includes motor starting circuitry and motor stopping circuitry that serves to sequentially start and stop the motors in the same cyclic order. The starting circuitry has a sensing component for sen... | 07/27/1982 |
| 4333479 | Disposable needle assembly A disposable blood drawing device has an evacuated container and holder therefor as well as a dual needle assembly which is connectable to the holder. The assembly has an elongated housing with opposite end openings in which hypodermic and tap needles are... | 06/08/1982 |
| 4323429 | Spent solvent purification apparatus A spent solvent purification apparatus for treating spent acetone includes an evaporation unit, a condensing unit, and a housing for the units which has upper and lower sections and a panel section that divides the housing interior into separate compartme... | 04/06/1982 |
| 4309793 | Shellfish meat and shell separation process and apparatus An apparatus and process of treating a mixture of shellfish meat particles and shell halves is revealed and wherein the mixture is treated by elutriation in an elongated, narrow upright zone. At the upper end of the zone the meat particles are removed whi... | 01/12/1982 |
| 4307825 | Bricklayers trowel holster A carrier for a bricklayer's trowel is in the form of a leather holster with a pocket which is suspended from a hanger. The hanger is designed to be hung from the user's body belt. The pocket is V-shaped with an inclined edge along its upper opening so as... | 12/29/1981 |
| 4300708 | Drywall taper's tool carrier and combinations therewith A carrier for a drywall taper's broad knife has a main pocket for the broad knife and an auxiliary pocket for a shear knife. The carrier includes three pocket wall forming components that are preferably made from leather. The opening at the upper end of t... | 11/17/1981 |
| 4270694 | Fluid flow regulating systems Fluid flow regulating systems involving systems for controlling the motor speed of fluid pumping devices are disclosed. The speed control systems involve use of a velocity head force sensor that movably responds to the velocity head forces of an air strea... | 06/02/1981 |
| 4260185 | Macrame devices A convoluted cord retainer for a macrame device has coils that are centered on an arcuate axis so that the coils touch on one side of the arrangement and are spaced apart on the other side of the arrangement. One device embodying the convoluted retainer h... | 04/07/1981 |
| 4253593 | Flat trowel carriers and combinations therewith A flat trowel carrier has a main pocket for the flat trowel and an auxiliary pocket for another trowel. The main pocket is formed by a pair of pliable components. One component forms the back wall of the pocket and the other component has a pair of narrow... | 03/03/1981 |
| 4245841 | Golf training device A golfer's training device is attachable to the forearm part of the arm that leads in the golf swing. It has a pivotal member with a distal end portion that engages the back hand when the pivotal member is in its normal operating position. The pivotal mem... | 01/20/1981 |
| 4219971 | Pocket window A multi-sash pocket window is designed to accomodate sash of differing widths and in varying combinations. The window frame structure is adapted to receive inserts for retaining the sash in place and which are selected to accomodate the sash width and com... | 09/02/1980 |
| 4208884 | Air defrost housing A housing for the low side evaporator coil of a refrigeration unit which housing is separately mounted on an exterior wall of a refrigerator compartment and which employs an energy saving air defrost system that, during a defrost cycle, draws ambient air ... | 06/24/1980 |
| 4179759 | Artificial leg having a lockable knee joint The knee pivot or hinge shaft of the artificial limb connecting the upper limb portion and the lower portion is located forward of the center line of gravity in the prosthesis whereby the arc of the foot of the limb is shortened as the foot moves rearward... | 12/25/1979 |
| 4174065 | Fluid flow regulating systems Fluid flow regulating systems involving systems for controlling the motor speed of fluid pumping devices are disclosed. The speed control systems involve use of a velocity head force sensor that movably responds to the velocity head forces of an air strea... | 11/13/1979 |
| 4146479 | Magnetic water conditioner A magnetic water conditioner has a hollow casing with an array of disc type cylindrical magnets arranged coaxially in the casing to provide an annular magnetic treatment zone in the space between the casing and the array. The magnets are polarized along d... | 03/27/1979 |
| 4125952 | Bucket attachment An attachment for power operated buckets, in the form of a forked type implement, is shown as supported on the leading edge of the bucket. The implement is suspended, through the provision of intermediate slot forming components, on the leading edge of th... | 11/21/1978 |
| 4109116 | Hearing aid receiver with plural transducers A hearing aid has an electroacoustic transducing means involving face-to-face diaphragms that are driven in opposite directions to avoid imparting mechanical vibrations to the case and thus to reduce acoustic feedback occasioned by case vibrations. The di... | 08/22/1978 |
| 4094434 | Disposable container for heatable food products A disposable container with a hermetically sealed chamber in which perishable foods are stored is equipped with a removable closure and a brim or lip that rises above closure and is covered with insulating material that facilitates the direct consumption ... | 06/13/1978 |
| 4079861 | Fluids mixing and proportioning device A piston type fluids mixing and proportioning device has a chamber where the fluid displacing piston is driven during one of its strokes through a fluid drive coupling, which is established in another chamber that has a driven piston element for displacin... | 03/21/1978 |
| 4027387 | Razor blade conditioning device A device for conditioning safety razor blades has on open top receptacle for receiving the head of a safety razor containing the blade to be conditioned, and a covering component which has a chamber with fluid discharge passages that communicate with the ... | 06/07/1977 |
| 4023057 | Electric motor field magnets Compound magnets for motor stators have a laminated structure that includes thin, flexible magnets made from permanently magnetizable particles, such as barium ferrite, that are embedded in a flexible matrix, such as rubber. Various laminated arrangements... | 05/10/1977 |
| 4004167 | Permanent magnet stators Annular magnets, primarily for motor stators, are centrifugally cast from particulate materials and synthetic plastic materials. Iron particles and ferrite particles stratified during the spin casting procedures so that the former provide an outer stratum... | 01/18/1977 |
| 3979829 | Apparatus for preparing a tooth stump for a crown A rotary cutting tool for the reception in a dental drill and use in preparing a tooth stump for the mounting of a tooth crown has a frustoconical cavity and a frustoconical lateral exterior surface. The exterior surface shape facilitates manipulation of ... | 09/14/1976 |
| 3976017 | Leguminous plant inoculation process and apparatus A process and apparatus used in inoculating leguminous plants with nitrogen fixing bacteria is disclosed. The process involves the preparation of an aqueous dispersion of the bacteria from a suitable source material and its dispensation to the soil in the... | 08/24/1976 |
| 3971286 | Guitar string supporting device Devices for supporting guitar strings at the bridge and nut ends of the keyboard include a body portion with an axially vertical threaded bore that houses a screw element. A slot is provided in the body so that the string rests and is supported on the upp... | 07/27/1976 |
