Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7866965 | Inner gear being biased to pump cover due to meshing of inner and outer gears A gear pump has a pump housing formed with a gear receiving recess, a pump cover coupled with the pump housing to cover the gear receiving recess, a hydraulic passage that uses the gear receiving recess as a passage part thereof, and annular inner and outer gears op... | 01/11/2011 |
| 7438542 | Fluid pump assembly A fluid pump assembly comprises a pump housing and a fluid pump disposed within the pump housing. The fluid pump has axially opposite first and second side faces and includes cooperating impeller and rotor members. The fluid pump assembly further comprises inlet and... | 10/21/2008 |
| 7367782 | Pump plate of a rotary feed pump In a pump plate (26) of a feed pump, an inlet port (26b) and an outlet port (26c) are formed around a shaft hole (26a) through which a driving shaft is inserted, and a rib (26f), which partitions each of... | 05/06/2008 |
| 7361001 | Hydraulic vane pump A hydraulic vane pump includes a plurality of members forming a recession and an orifice in fluid communication with one another and with rotating vane cells at an inlet sector of the pump. Air entrained in the vane cells is exhausted through the recession and the o... | 04/22/2008 |
| 7310965 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 12/25/2007 |
| 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 |
| 7264455 | Rotary positive displacement hydraulic machines A rotary positive displacement hydraulic machine includes a housing defining two mutually intersecting parallel working chambers having a low pressure inlet side and a high pressure outlet side. Two meshing rotors are mounted for rotation in the two chambers, respec... | 09/04/2007 |
| 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 |
| 7159412 | Compressor head, internal discriminator, external discriminator, manifold design for refrigeration recovery apparatus The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 01/09/2007 |
| 7073346 | Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor The compressor head, internal and/or external discriminator, and manifold design in general utilize ball valves on the suction and discharge of a cylinder head in the recovery of refrigerant liquid and/or vapor. The device facilitates the flashing of liquid refriger... | 07/11/2006 |
| 7074025 | Fluid delivery device A fluid delivery device, such as a geared machine or a gear pump, with a housing having at least one supply chamber and a displacement unit arranged within the supply chamber. The displacement unit serves to supply a medium to at least one pressure chamber provided ... | 07/11/2006 |
| 6997689 | Offset bearing for extended fuel pump life A bearing assembly (20) for a pump (12), e.g., an internal or external gear pump includes a journal bearing block (20) having a length, a width, and an axial centerline (CL′) passing through a center of the journal bearing block (20) wi... | 02/14/2006 |
| 6979185 | Bi-rotational pump/hydraulic actuator A novel bi-rotational pump adapted to pump fluid in either of two directions by reason of construction inclusive of passageways and an array of check valves and pilot pistons which cooperate in one direction and in another way in the other direction. ... | 12/27/2005 |
| 6945763 | Geared pump with forced lubricated coupling A geared feed pump has a housing having a pump chamber in which a rotationally driven pair of gear wheels meshing with one another is disposed for pumping medium out of a suction chamber that communicates with a supply tank, along feed conduits, formed between the c... | 09/20/2005 |
| 6902382 | Gear motor start up control A hydraulic motor comprising a housing having a fluid inlet. A fluid outlet and a cavity there between, a pair of intermeshing gear elements rotatable in the housing about mutually parallel axes. Each of the gear elements having a set of gear teeth disposed about th... | 06/07/2005 |
| 6338612 | Method for limiting the pressure provided by a hydraulic pump A hydraulic pump system having a pump for pressurizing fluid and a hydraulic chamber for receiving fluid from the pump. An even flow of fluid is outputted from the chamber to a valve assembly. The chamber is formed from a resonator and a resonator cover t... | 01/15/2002 |
| 5862664 | Charging pump for a hydrostatic transmission A hydrostatic transmission and a charge pump for supplying operating oil which are housed in a housing, in which a pump casing of the charge pump is mounted to a center section of the hydrostatic transmission without using mounting bolts. A spring is inte... | 01/26/1999 |
| 5641281 | Lubricating means for a gear pump An improved self-lubricating bearing arrangement for gear pumps utilizes a system of material feed channels and reservoir pockets to divert a portion of the material being pumped from the pressure side of the intermeshing gears to lubricate the gear-suppo... | 06/24/1997 |
| 5601423 | High clearance sliding vane pump A sliding vane air pump has a resilient flexible plate secured to the housing adjacent to one end of the rotor so that drawing a high vacuum flexes the plate closer to the rotor to further increase the vacuum attainable by the pump.... | 02/11/1997 |
| 5499910 | Internal gear pump having a stop for a sickle-shaped filler part Internal gear pump with an internal gear, a thrust plate arranged on each side of the internal gear, a powered external pinion arranged eccentrically relative to the internal gear and meshing with it, and a sickle-shaped, floating filler part split in per... | 03/19/1996 |
| 5417555 | Rotary vane machine having end seal plates A rotary vane machine includes a rotor having one or more sliding vanes. The rotor rotates within a chamber of a housing. At least one sealing plate is located between an end surface of the rotor and a corresponding inner surface of the housing. The seali... | 05/23/1995 |
| 5380178 | Rotary device and method of assembly A pump or motor device (22) includes a housing (24) which encloses a rotor (30) disposed within a cam ring (46). A bottom or wear end plate (100) and a top or pressure end plate (156) cooperate with the cam ring (46) and vanes (42) connected with the roto... | 01/10/1995 |
| 5312236 | Gear pump for non-newtonian fluid A pump gear for force-feeding of a non-Newtonian fluid has a pair of gears with intermeshing teeth, each flanked by members such as bearings with inner surfaces opposite to its side surfaces. The gaps that are formed between the side surfaces of the gears... | 05/17/1994 |
| 5290155 | Power steering pump with balanced porting The balanced vane hydraulic pump designed for automotive power steering applications employs a two-piece aluminum housing construction, a cam ring, rotor flow regulating valve, a high pressure gallery, and a pressure plate, all located in the rear housing... | 03/01/1994 |
| 5273411 | Rotary positive displacement hydraulic machines A rotary positive displacement hydraulic machine such as a gear pump or motor, comprises a housing defining two mutually intersecting parallel working chambers, two meshing rotors mounted for rotation in the two chambers, respectively, and two bearing sup... | 12/28/1993 |
| 4836759 | Rotary pump with orbiting rotor of harder material than stator A reversible, self-priming rotary pump has a housing with a stator of elastomeric material which is softer than the elastomeric material of the rotor on a cam on shaft. The inlet and exhaust ports are separated by a lobe received in a recess in the stator... | 06/06/1989 |
| 4770617 | Gear pump with leakage fluid intermittently communicated to expanding fluid cells A gear pump is disclosed which is adapted to convey a polymeric melt without significant leakage, and which comprises a pair of intermeshing gears. One of the gears is driven by a drive shaft which extends through a journal bore in the pump housing, and a... | 09/13/1988 |
| 4699575 | Adhesive pump and it's control system An improved adhesive pump and pump control system for automatically changing the flow rate of adhesive materials being dispensed onto a workpiece in conformance with changes in movement of a robot controlled adhesive dispensing nozzle used to apply adhesi... | 10/13/1987 |
| 4682938 | Gear pump bearings Variations in pump capacity of gear pumps due to varying leakage paths occurring in otherwise identical pumps as a result of the manufacturing operation are minimized without unduly hindering the fitting of the bearings through the pump housing by maintai... | 07/28/1987 |
| 4606713 | Rotary positive-displacement fluid-pressure machines A rotary positive-displacement fluid-pressure machine of bi-directional type including a casing, intermeshing rotors, and a pressure-balancing arrangement, associated with the end face, remote from said rotors, of the or each end plate means of the machin... | 08/19/1986 |
| 4605363 | Gear pump with pivoted bushings that can deflect Rapid wear in a gear pump construction due to shaft deflection during pump operation and of the sort including a housing having an interior wall defining a pumping chamber, opposed inlet and outlet ports meshed gears within the chamber, a pair of shafts m... | 08/12/1986 |
| 4462773 | Planetary hydraulic motor A planetary hydraulic motor comprises a housing (1) with a stator gear (2), the housing accommodating a shaft (3) having fixedly secured thereon a gear (4), a ring rotor (11) disposed eccentrically relative to the shaft (3) and two cover cups (5 and 6). T... | 07/31/1984 |
| 4443168 | Gear machine centering arrangement An arrangement for centering an end wall of a housing of a hydraulic gear machine, such as a pump or a motor, with respect to the open end of an internal chamber provided in a housing body forming the circumferential wall of the housing includes a plurali... | 04/17/1984 |
| 4435138 | Rotary vane machine with rotating end sealing plates A tubular cylindrical housing encloses an eccentrically mounted rotor provided with radial slots receiving the inner ends of slideable vanes, the outer ends of which are connected to wiper bars which ride along the interior peripheral surface of the housi... | 03/06/1984 |
| 4407645 | Gear pump having an isolator to protect its bearings A hydraulic device, pump or motor, useful with the hydraulic fluid used in a mine. The device comprises a housing with an impeller within the housing. A drive shaft extends through the housing and carries the impeller. There are bearings for the shaft on ... | 10/04/1983 |
| 4402654 | Fluid-operated gear machine An arrangement for aligning a drive shaft of a fluid-operated gear machine having a cover enclosing a housing of the machine is provided. The aligning arrangement includes a plate connected to the axial end face of the cover, which side is directed to a p... | 09/06/1983 |
| 4400146 | Fluid-operated gear machine A gear machine, such as a gear pump or gear motor, has a housing in a chamber of which there are journalled two gears which mesh with one another. One of the gears is mounted on a drive shaft the end of which is extended outwardly from the housing. The ho... | 08/23/1983 |
| 4395207 | Gear pump or motor with bearing passage for shaft lubrication Gear pump and motor apparatus adapted to operate both as a pump and as a motor include two meshing gears whose shafts are supported in a housing chamber by respective bearing sleeves whose end faces sealingly engage the end faces of the respective gears. ... | 07/26/1983 |
| 4336006 | Gear positive displacement machine with gaps between bearing members and housing A gear positive displacement machine has a housing, two gear members, and two bearing members supporting the latter. A gap is formed between an inner wall of the housing and a respective one of the bearing member, the gap increasing in two opposite axial ... | 06/22/1982 |
