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 |
| 7195467 | Internal gear machine with variable capacity A fluidic machine has a fixed body, an external orbital member rotatable around a first rotational axis and internal gear teeth including a first teeth number, a transmission member rotatable around a second rotational axis, an internal orbital member supported by t... | 03/27/2007 |
| 6887057 | Minimal contact seal positive displacement device method and apparatus A positive displacement device that incorporates two rotors that are offset from collinear and each comprising a first and second set of vanes where the engagement surfaces of the first set of vanes are adapted to only engage when the rotors are in the top dead cent... | 05/03/2005 |
| 5513969 | Rotary piston machine having engaging cycloidal gears The invention comprises a rotary piston machine, which functions as a pump, compressor or engine, and in which the cogs (45) of teeth (46) of a rotating control part travel over a cycloidal surface (44) of a cycloidal part (42) in order to define work cha... | 05/07/1996 |
| 5184947 | Fully variable output hydraulic gear pump having an axially translatable gear A fully variable output hydraulic pump includes a main casing having a fluid pumping chamber extending therethrough, fluid input ports and fluid output ports. The fluid pumping chamber is shaped to receive a pair of cylindrically shaped gears inserted axi... | 02/09/1993 |
| 5161961 | Gear pump with counterbalanced radial forces and two piece radial seals By using multiple external gears and internal gears, which are engaged with each other, and multiple radial sealing elements and axial sealing elements, a pump or motor, which includes multiple equivalent pumps or motors, is made. Each gear included in th... | 11/10/1992 |
| 5005982 | Material processor A material processor for processing materials to improve their rheological and material properties includes a housing defining a process chamber and having an inlet for introducing materials therein and an outlet for discharging materials therefrom. Inter... | 04/09/1991 |
| 4887956 | Variable output oil pump The invention provides a variable output pump of the gerotor type in which one rotor meshes in two side by side annulii which can be aligned for maximum output and turned in opposite directions to be non-aligned for minimum output. The movement is effecte... | 12/19/1989 |
| 4812111 | Variable displacement rotary fluid machine An internally meshing gear-pump, or motor comprises inlet and outlet ports 27,28 for the working fluid through a sealing plate 5 mounted on the shaft 1, an externally-toothed gear 2 is longitudinally displaceable relative to internally-toothed gears 3,4 t... | 03/14/1989 |
| 4778361 | Variable output gerotor pump A variable output gerotor oil pump of the kind having a common rotor with n teeth meshed with two axially juxtaposed internally lobed annuli with n+1 teeth has the annuli individually located in eccentrics formed with gear teeth to be turned in opposite d... | 10/18/1988 |
