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| Number | Title | Issue Date |
| 7354254 | Compact vacuum pump A compact turbomolecular vacuum pump (1) is driven by a cup-type motor (8). The cup-shaped rotor of the motor is preferably integrated into the pump rotor (14) and may define corresponding pumping stages, for instance Holweck stages, wherein the... | 04/08/2008 |
| 7347301 | Lubricant supply system and operating method of multisystem lubrication screw compressor An oil refrigeration screw compressor being applied to a refrigeration system etc., in which the problem of strength reduction of a bearing material under high temperatures and that of lifetime reduction of the bearing material due to viscosity lowering of lubricant... | 03/25/2008 |
| 7331770 | Disposable two-stage pump A disposable device for transfer of at least one predetermined medium into a device for treatment and promotion of healing of damaged body tissue. The device is comprised of a housing and a first pump stage disposed within the housing for pumping a first predetermin... | 02/19/2008 |
| 7229256 | Dual pump transmission A dual pump apparatus having two pumps mounted in a housing, where the housing comprises two elements mounted on opposite sides of a hydraulic mounting member or center section. The pumps are mounted on one side of the hydraulic mounting member in a pump cavity, and... | 06/12/2007 |
| 7219504 | Heat dissipation system with an air compressing mechanism A heat dissipation system, including an air compressor mechanism disposed in a body shell, which has an inlet and enlarged outlet. An air is directed to the air compressor mechanism, and compressed. Upon exhaling the body shell, a compressed air will rapidly expand ... | 05/22/2007 |
| 7201561 | Swashplate seal assembly A swashplate seal assembly sized for rotor shaft rotation therein, including an outer cover encircling the rotor shaft and covering a sealing ring having an inner circumference on which a resilient sealing wiper is inwardly disposed. The outer cover, sealing ring an... | 04/10/2007 |
| 7182586 | Scroll compressor A scroll compressor includes: a frame fixedly installed in the casing to support a rotary shaft of the driving motor and having a second suction opening at its one side and a second discharge opening at its other side; a fixed scroll fixedly installed at the frame a... | 02/27/2007 |
| 7125230 | Valve with operation parameter set at assembly and pump using same A valve is assembled by telescoping a first body component relative to a second body component until reaching a relative position that corresponds to a predetermined valve operation parameter, such as a valve opening pressure. The first body component is then fixed ... | 10/24/2006 |
| 7118350 | Radial piston pump The invention relates to a radial piston pump unit for a high pressure injection system with a pump housing in which a driveshaft with an eccentric section is mounted. A reciprocating ring sits on the above section and drives at least one spring-loaded piston which ... | 10/10/2006 |
| 7059837 | Variable speed oil-injected screw compressors The invention relates to the use of variable speed control of the cooling fan on a variable speed oil-injected screw compressor. A screw compressor (11) comprises at least one stage of compression, each with a pair of rotors, variable speed compressor drive m... | 06/13/2006 |
| 7055824 | Lip-type high pressure seal A high pressure shaft seal (10A) for use in a refrigerating machine wherein carbon dioxide is used as a refrigerant in lieu of “Freon”. The seal has a sealing lip (24A) made of a non-elastomeric polymer material such as nylon that has a small gas p... | 06/06/2006 |
| 7055317 | Hydraulic module The invention relates to a new type of hydraulic module for actuating at least one hydraulic control element with a hydraulic pump in a housing, with an electric motor fastened to a first housing side for driving the pump, with a tank located on a second housing sid... | 06/06/2006 |
| 7037090 | Crankcase sealing apparatus A compact 180° opposed piston pump/compressor minimizes axial spacing between its pistons on the drive shaft and thereby reduces the shaking couple and noise from reciprocation. Each piston has its own eccentric element press-fit into the connecting rods so as not ... | 05/02/2006 |
| 7033142 | Vacuum pump system for light gases A vacuum pump system includes at least one high-vacuum pump, a fore-vacuum pump, and at least one intermediate pump, arranged between the at least one high-vacuum pump and the fore-vacuum pump and having its inlet connected directly and exclusively with the outlet o... | 04/25/2006 |
| 7025573 | Storage container for air compressor The present invention is directed to a suitcase style air compressor assembly having an extensible handle bar assembly, a wheel assembly, and a integral storage container. When the extensible handle bar assembly is fully extended, the suitcase style air compressor a... | 04/11/2006 |
| 6994529 | Air compressor with improved hand portability An air compressor package having improved stability and portability. The air compressor package is positionable in an operational position, wherein the air compressor package is positioned on a base, and a transport position, wherein the air compressor package may b... | 02/07/2006 |
| 6991436 | Air compressor mounted on a compressor tank An air compressor having a cooling fan that cools both a pump and an electric motor. Baffle compress air against the top of the motor, causing it to break up and flow around fours sides of the motor and through the motor. The pump includes an elongate intake tube or... | 01/31/2006 |
| 6981850 | Apparatus and method for producing a pressurized vapor stream A cryogenic stream is pumped by a cryopump and then vaporized in a vaporizer to produce the pressurized vapor stream. The cryopump is driven by a transmission that is in turn driven by a hydraulic fluid. The hydraulic fluid flows within a hydraulic fluid circuit hav... | 01/03/2006 |
| 6953327 | Dual pump A dual pump apparatus having two pumps mounted in a housing, where the housing comprises two elements mounted on opposite sides of a hydraulic mounting member or center section. The pumps are mounted on one side of the hydraulic mounting member in a pump cavity, and... | 10/11/2005 |
| 6953330 | Scroll vacuum pump A scroll vacuum pump has an orbiting scroll and fixed scrolls. The orbiting scroll is rotatably mounted to an eccentric portion of a driving shaft and revolved by the driving shaft, so that a gas is sucked into a compression chamber between the orbiting scroll and f... | 10/11/2005 |
| 6927165 | Method and apparatus for processing substrates and method for manufacturing a semiconductor device A substrate processing apparatus includes a housing, a process tube for performing variable batch processes on substrates, and product substrate carriers. The product substrate carriers have a capacity of a predetermined number of substrates. A number of the product... | 08/09/2005 |
| 6926502 | Combination shield and conduit box cover An apparatus comprising a driven element, a driving element operably coupled to the driven element, and a shield coupled to the driving element such that the shield at least partially covers at least one of the driven element and the driving element. The driven elem... | 08/09/2005 |
| 6916397 | Methods and apparatus for maintaining a pressure within an environmentally controlled chamber In a first aspect, a system includes (1) a chamber; (2) a variable speed vacuum pump coupled to the chamber; and (3) a pressure controller coupled to the chamber. The pressure controller compares a set point pressure with a pressure measurement for the chamber and a... | 07/12/2005 |
| 6857392 | Aquarium pumping and airing apparatus An aquarium includes a pump disposed in a chamber of a container to circulate water and having a spindle. An air supplying device is coupled to the spindle of the pump and driven by the spindle of the pump, to pump air into the water contained in the chamber of the ... | 02/22/2005 |
| 6817844 | Rotary blower with forced external air cooling A rotary blower with forced external air cooling having multiple interconnected and synchronized parallel multi-lobe rotors with the same number of straight lobes for propelling flow from a suction port to a discharge port of an inner casing without internal compres... | 11/16/2004 |
| 6805538 | Fuel tank mounted, motorized high pressure gasoline pump A pump, for supplying high pressure fuel from a fuel tank to an engine via a common rail, includes a motor assembly (20) mounted on top of the fuel tank, a pump assembly (26) positioned within the fuel tank, and a support column (32) rotatably c... | 10/19/2004 |
| 6790012 | Enclosure for an air compressor An air compressor unit having an enclosure that permits adequate cooling air flow, and reduces the amount of noise that emanates from the air compressor unit. The enclosure has a partition that separates the interior of the enclosure into two compartments: a dischar... | 09/14/2004 |
| 6783330 | Self-priming centrifugal pump A priming vacuum control system for use on a self-priming pump includes a priming vacuum control valve and a priming vacuum control valve-actuating system. The priming vacuum control valve is disposed between a vacuum pump and a priming chamber for the self-priming ... | 08/31/2004 |
| 6726457 | Compressor with supercharged inlet The invention relates to a compressor system for production of compressed air, consisting of a compressor driven by an internal combustion engine, connected by piping to compressed air discharge points and supplied with precompressed air by an exhaust turbocharger o... | 04/27/2004 |
| 6675902 | Progressive cavity wellbore pump and method of use in artificial lift systems An artificial lift system used to produce fluids from boreholes such as oil and gas wells. The system uses a progressive cavity (PC) downhole pump system which can be inserted into the borehole, seated, operated, flushed and removed using conventional or ... | 01/13/2004 |
| 6672843 | Dual pump apparatus comprising dual drive shafts and auxiliary pump A dual pump apparatus for use on a vehicle or industrial application having a housing in which a pair of hydraulic pumps are mounted, having by at least one charge pump mounted on an end cap, and the trunnion arms for controlling the hydraulic pumps exten... | 01/06/2004 |
| 6672828 | Vacuum pump A turbomolecular vacuum pump (5) comprises a first pumping section (1) having pumping stages with bladed rotor discs, a second pumping section (2) having pumping stages with smooth rotor discs, a third pumping section (3) having a pumping stage with a too... | 01/06/2004 |
| 6663352 | Method and apparatus for dynamically determining vapor pressure in pumping systems A method and system for dynamically determining a vapor pressure of a fluid passing through a pumping system by diverting a portion of the fluid from the pumping system into a chamber, isolating the diverted fluid from the pumping system, evacuating the c... | 12/16/2003 |
| 6638040 | Dry vacuum pump A dry vacuum pump comprises a scroll-type vacuum pump and a rotary-vane vacuum pump, wherein the rotary-vane vacuum pump is mounted on the side of an inlet, whereas the scroll-type vacuum pump is mounted on the side of an outlet, and then a compound-type ... | 10/28/2003 |
| 6634459 | Accessory drive and particle trap An accessory drive system to provide engagement between a driving input source and a driven accessory unit includes a housing attachable to the input source. A fluid suction port and a discharge port are defined by the housing and the suction port is in f... | 10/21/2003 |
| 6623249 | Pump and pumping method Pumps and methods for inflating objects with atmospheric air employ a fan pump to quickly fill the object with air and then shunt away the air from the fan pump, and use a diaphragm pump to increase the pressure until the inflatable object attains the fir... | 09/23/2003 |
| 6592336 | Hydraulic pump with a built-in electric motor A hydraulic pump with a built-in electric motor wherein an electric motor and a pump unit are arranged in tandem fashion and accommodated within a common housing. In this pump, the housing is in the form of a metal box having a rectangular parallelepiped ... | 07/15/2003 |
| 6553893 | Piston assembly for reducing the temperature of a compressor cup seal A piston assembly for a compressor that reduces the temperature experienced by a compressor cup seal during operation of the compressor. The piston assembly includes a piston sleeve having a top portion and an interior. A valve plate is supported by the t... | 04/29/2003 |
| 6520752 | Pumps and filter assemblies with application to aquatic and other environments A combined pump and filter assembly having backwashing apparatus for the filter assembly and apparatus for offsetting the tendency for an increase in pump output flow resistance to cause an increase in fluid flow to the backwashing assembly.... | 02/18/2003 |
| 6485266 | Compressor assembly with deflector A compressor assembly which includes a housing having an air inlet. A cylinder sleeve having an end open into the housing receives a piston disposed in the housing. The piston extends into the cylinder sleeve open end for reciprocal movement in the sleeve... | 11/26/2002 |
