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 |
| 7922469 | Pump A pump, for example, a vane-cell pump or a roll-cell pump, especially a gear pump, includes a two-stroke pump contour which includes at least one rise zone, at least one large circular area, at least one fall zone and at least one small circular area. The pump inclu... | 04/12/2011 |
| 7695262 | Pump having toothing on the rotary and drive shaft A pump, in particular a sliding-vane pump, a roller cell pump, or a gear pump includes a rotating assembly, with, amongst other things, a rotor with radially-sliding vanes, rollers or gears and a drive shaft is provided. The rotor or a gearwheel is connected to the ... | 04/13/2010 |
| 7566212 | Vane pump with blade base members A vane pump includes a rotor accommodated in a rotor chamber; a plurality of vanes attached to the rotor, each of the vanes having a leading end adapted to make sliding make a contact with an inner peripheral surface of the rotor chamber. Further, the vane pump incl... | 07/28/2009 |
| 7566211 | Vane pump having vanes with a cutout portion A vane pump includes a rotor chamber; a rotor accommodated in the rotor chamber; a plurality of vanes attached to the rotor, each vane having a leading end adapted to make sliding contact with an inner peripheral surface of the rotor chamber. The vane pump includes ... | 07/28/2009 |
| 7467935 | Low input torque rotor for vane pump A vane-type fluid displacement unit having a housing, a drive shaft extending through the housing, a rotor secured to the drive shaft and disposed within the housing, the rotor having at least one non-smooth top or bottom surface, and at least one vane secured to th... | 12/23/2008 |
| 7425121 | Rotary vane pump A pump assembly (100) having a pump housing (206 and 208) and a rotor (222) rotatingly disposed within the housing, the rotor having a plurality of slots (226). The pump assembly includes a plurality of vanes (224), each van... | 09/16/2008 |
| 7393192 | Rotary vane pump A rotary vane pump (200) for pumping a fluid. The rotary vane pump includes a pump housing (206 and 208) and a rotor having a plurality of dividing members (232) and a plurality of slots (226) disposed between adjacent dividing mem... | 07/01/2008 |
| 7390182 | Rotor structure of pneumatic tool A rotor structure of pneumatic grinder, including a rotor main body and at least one reinforcing plate. The rotor main body is formed with a central shaft hole for a rotary shaft to pass through. Several radial projecting sections are formed on outer circumference o... | 06/24/2008 |
| 7353796 | Rotary machine The rotary machine can be used as a rotary internal combustion engine and as a pneumatic or hydraulic pump. The rotary machine comprises a housing in the form of two intersecting cylinder parts of different diameters having parallel axes. A rotor is received in the ... | 04/08/2008 |
| 7351046 | Shaft-hub connection A shaft-hub connection for transferring a torque between a shaft (1) and a hub (3) with the aid of at least one drive element (2). To enable a torque transfer which is practically resistant to wear, even under the effect of transversal forces, t... | 04/01/2008 |
| 7347675 | Vane rotary expansion engine A high-efficiency vane rotary expander is provided, which prevents a loss due to incomplete expansion or overexpansion from occurring because the volume of an operating chamber may vary. This is done by forming a plurality of discharge ports (28, 29, 48, 49, 50 | 03/25/2008 |
| 7347677 | Vane pump A body bore 2 formed in a body 1 is closed with a cover 9, as well as a cam ring 4 is incorporated into the body bore 2, and a rotor 6 is arranged inside the cam ring 4. Vanes 7 move in and out along an inner s... | 03/25/2008 |
| 7316551 | Vane pump with integrated shaft, rotor and disc A rotary vane suction pump that includes a housing that defines a pump chamber. A shaft is rotatably mounted to the housing. A rotor is fixed to the front end of the shaft to rotate in unison with the vanes. The vanes that form the fluid cavities, into which the flu... | 01/08/2008 |
| 7314359 | Vane pump for continuously variable transmission In a vane pump disposed inside a transmission case of a continuously variable transmission, a pump case (20), a pump drive shaft (8) rotatably supported by a shaft bore (9) of the pump case (20) to rotate a rotor (5), and a drain p... | 01/01/2008 |
| 7306440 | Vane pump including rotor having eccentric gravity center A vane pump includes a casing having a cylindrical inner bore and a rotor disposed in the inner bore with an eccentric relation thereto, forming a circular pump chamber between the rotor and the inner bore. The circular pump chamber is divided by vanes held in the r... | 12/11/2007 |
| 7273360 | Vane-type hydraulic motor A vane-type hydraulic motor includes a rotor (30) having a main shaft (70) and a plurality of vanes (35), a cam casing (10) having a chamber (11) for rotatably housing the rotor (30), a first port (13) and a second po... | 09/25/2007 |
| 7261526 | Cylinder for a vane motor A cylinder to a vane motor is designed to include cylindrically shaped inlet and outlet holes, an axial passage that includes a blocked upstream portion that bypasses the upstream inlet holes, spaced circumferentially slots for leading a portion of the pressurized a... | 08/28/2007 |
| 7255546 | Spindle for a vane motor The spindle of a vane motor is designed to enhance the power, speed and torque by undercutting the spindle adjacent to the vanes on the power stroke side to increase the working area of the vanes and by adding slots intermediate the vane formed in said spindle and e... | 08/14/2007 |
| 7237432 | Vane pump, method for adjusting pump flow rate of vane pump and fuel vapor leakage check module having vane pump A rotor includes a plurality of vanes and is connected to a rotatable shaft of a motor arrangement. A casing includes a pump chamber and elongated holes. The pump chamber receives the rotor in such a manner that the rotor is eccentric to the pump chamber. Each elong... | 07/03/2007 |
| 7234344 | Vane pump and fuel vapor leakage check module having the same A vane pump includes a motor arrangement, a rotor, a casing and bolts. The motor arrangement includes a mount. The rotor includes vanes and is rotated by the motor arrangement. The casing has opposed first and second end surfaces and makes flat surface contact with ... | 06/26/2007 |
| 7229262 | Rotary piston pump end pressure regulation system A rotary piston pump for fluids, wherein the ends of the housing are configured so as to provide reduced pressure differentials between opposite sides of the rotor end disks. ... | 06/12/2007 |
| 7226281 | Vane pump having vanes slanted relative to rotational axis A vane pump is composed of a casing having a cylindrical inner bore and a rotor disposed in the inner bore with an eccentric relation to the inner bore. A circular pump chamber formed between the rotor and the inner bore is divided by vanes disposed in the rotor int... | 06/05/2007 |
| 7222680 | Pneumatic motor improvements and pneumatic tools incorporating same A pneumatic motor having a motor chamber having an inner surface with an eccentric longitudinal axis, a motive gas fluid inlet, and at least one end wall located transversely to the longitudinal axis with an exhaust aperture located therethrough. A rotor is rotatabl... | 05/29/2007 |
| 7189068 | Sound reduced rotary vane compressor A rotary vane compressor having features for reducing sound emitted from the compressor during operation. The sound reduction features include and relate to specific components of the compressor. Specifically the features relate to (1) the compressor motor; (2) a no... | 03/13/2007 |
| 7134855 | Vane pump with integrated shaft, rotor and disc A rotary vane suction pump that includes a housing that defines a pump chamber. A shaft is rotatably mounted to the housing. A rotor is fixed to the front end of the shaft to rotate in unison with the vanes. The vanes that form the fluid cavities, into which the flu... | 11/14/2006 |
| 7134856 | Compressed air motor The invention relates to a compressed air motor comprising a housing and a rotor rotatably mounted therein, the rotor being provided with substantially radial slots and plate-like vanes being mounted in the slots so as to be radially displaceable by the centrifugal ... | 11/14/2006 |
| 7128544 | Crescent seal for the cylinder of a vane motor A vane motor is modified to increase the sealing effectiveness of the gap made at the interface of the spindle and cylinder by undercutting the cylinder a predetermined amount and distance so as to increase the effectiveness of the spindle to cylinder gap and to dec... | 10/31/2006 |
| 7114931 | Rotary pump A rotary pump includes a stator housing and a rotor. The stator housing preferably has an oblong inner surface. The rotor, which is disposed in the stator housing, preferably has a substantially circular outer surface within which a plurality of vane slots are defin... | 10/03/2006 |
| 7090476 | Rotary fluid machine A rotary fluid machine is provided in which a rotating shaft (113) fixed to a rotor (41) is rotatably supported on a fixed shaft (102) fixed to a casing (11), sliding surfaces of the fixed shaft (102) and the rotating shaft (113... | 08/15/2006 |
| 7056107 | Vane type rotary machine The present invention relates to a vane-type rotary machine suitable for use in applications where a low-viscosity fluid such as water is used as a working fluid. According to the present invention, a vane-type rotary machine having a rotor (11) mounted with ... | 06/06/2006 |
| 7029253 | Pneumatic tool having a pneumatic cylinder for avoiding failure of bearings A pneumatic cylinder of pneumatic tool capable of avoiding failure of bearings, including: a cylinder body having an internal cylindrical chamber in which a rotor is disposed, a rotary shaft being fixedly connected with the rotor, whereby high pressure air can flow ... | 04/18/2006 |
| 7014439 | Vane pump having volume variable pump chambers communicatable with inlet and outlet In a vane pump, a rotor chamber is defined within a housing that includes a ring and first and second plates. An inlet is communicated with the rotor chamber through an intake groove, and an outlet is communicated with the rotor chamber through a discharge groove. A... | 03/21/2006 |
| 6958058 | Methods and devices for pumping fluid and performing surgical procedures Devices and methods of use of such devices for pumping fluid and for use in surgical procedures preferably include vacuum-driven pumps for providing irrigation and suction functions to the surgical field. Such pumps may be freestanding, external to or integrated int... | 10/25/2005 |
| 6935854 | Gas compressor A gas compressor has a cylinder in which a refrigerant gas is compressed and a side block mounted to an end surface of the cylinder. The side block has suction holes each having a first end opening to an outer surface of the side block and a second end opening into ... | 08/30/2005 |
| 6913451 | Vacuum pump with fail-safe vanes A vacuum vane pump for generating a vacuum condition for aircraft instruments includes a rotor having a peripheral surface eccentrically mounted in a housing having a confrontingly opposed inner surface so that the opposed surfaces define a crescent-shaped chamber. ... | 07/05/2005 |
| 6899528 | Power steering pump A power steering pump comprises, as main elements, a cam plate, a discharge cover plate and a suction cover plate that cooperate to define a cam chamber, a fluid discharge passage and fluid suction passage for the pump. The cam chamber is formed in the cam plate. Th... | 05/31/2005 |
| 6896502 | Fluid cannon positive displacement pump A positive displacement pump comprising a casing having an interior chamber and an inlet and an outlet oppositely spaced within the chamber. A rotor with a cylindrical outer surface is secured in offset position within the chamber. An end disk is secured to each end... | 05/24/2005 |
| 6881044 | Rotary vane compressor with interchangeable end plates An improved rotary vane compressor includes an elongated housing having a main part and two ends. An inlet/outlet end plate member positioned at one end of the housing has an inlet port and an outlet port. The end plate member is one of a first type having ports con... | 04/19/2005 |
| 6872065 | Vane gas compressor having two discharge passages with the same length A gas compressor has a cylinder chamber provided with discharge holes. Openings are in communication with the discharge holes, respectively. Discharge passages having the same length are connected with the openings, respectively. The ends of the discharge passages a... | 03/29/2005 |
| 6857863 | Power steering pump A power steering pump for an automotive vehicle comprises a can housing that defines a compartment for receiving a cam plate and a pressure plate. The compartment is sealed by a cover that is threaded into an open end of the canister housing. The cover includes an a... | 02/22/2005 |
