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| Number | Title | Issue Date |
| 7261522 | Fluid manifold for a welder A fluid manifold usable with a welder and air compressor combination. The manifold is constructed of a single unitary manifold block and which is divided into two separate fluid communication systems that are isolated from each other by the manifold block itself. Ea... | 08/28/2007 |
| 7234926 | Air compressor assembly A compressor assembly comprising first and second housing structures connected to one another. A compression chamber is formed integrally within the first and second housing structures. A separation chamber is formed integrally within the first and second housing st... | 06/26/2007 |
| 7195470 | Scroll compressor having a supply passage connecting the back pressure chamber to discharge pressure region and passing a clearance at a sliding portion A scroll type compressor includes a housing defining a discharge pressure region, a fixed scroll member having a fixed base plate and a fixed scroll wall, a movable scroll member having a movable base plate and a movable scroll wall, a fixed wall slidably supporting... | 03/27/2007 |
| 7094043 | Compressor having counterweight shield A compressor having a housing and mutually engaged stationary and orbiting scrolls. A crankcase is disposed between a motor and the orbiting scroll. A shaft is operably connected with the orbiting scroll and extends through the crankcase and the motor. The end of th... | 08/22/2006 |
| 7029243 | Gas compressor having oil separation filter Disclosed is a gas compressor capable of preventing deformation of a filter used for separating oil contained in a compressed gas. The gas compressor includes a suction port, a suction chamber, a gas compressing portion, a compressed gas releasing portion provided i... | 04/18/2006 |
| 7004357 | Grease gun An apparatus converts rotary motion of a motor drive shaft into oscillatory motion of a work piece, for example, in a power tool. The apparatus comprises a planetary gear assembly connected to the motor for rotating an output gear. The output gear meshes with a driv... | 02/28/2006 |
| 6858067 | Filtration vessel and method for rotary gas compressor system A filtration vessel is shown for use with a rotary screw compressor which receives a compressed liquid/gas mixture from the compressor. The vessel utilizes a first stage vortex knockout region to remove bulk liquids through a circular motion which imposes centrifuga... | 02/22/2005 |
| 6755632 | Scroll-type compressor having an oil communication path in the fixed scroll A scroll-type compressor includes a housing including a suction chamber and a discharge chamber. The compressor also includes a fixed scroll including a first spiral element. Specifically, the fixed scroll is fixed to the housing, and a sealing member seals the fixe... | 06/29/2004 |
| 6701220 | Industrial robot device An industrial robot including a manipulator having a control system. The manipulator includes a common gear housing having first and second inner compartments connected with a passage channel. First and second gears are arranged in the first and second in... | 03/02/2004 |
| 6699022 | Vacuum exhaust apparatuses and vacuum exhaust methods A vacuum exhaust apparatus includes an oil-sealed rotary pump with a gas inlet for taking a gas into the pump. The gas inlet has a gas inlet flange to join with a flange of a gas inlet pipe for guiding the gas to the pump. An oil supply section connects w... | 03/02/2004 |
| 6551082 | Oil free type screw compressor In an oil-free type screw compressor including a low-pressure-stage compressor main body and a high-pressure-stage compressor main body, when the power of an motor is transmitted to an oil pump via a gear to start the pump, the lubrication oil stored in a... | 04/22/2003 |
| 6409489 | Compressor installation with water-injected compressor element The invention concerns a compressor installation with a water-injected compressor element (1) having a water cycle (6) and a water supply device (15) for supplying water to the water cycle (6), containing a water supply line (16) with a controllable valve... | 06/25/2002 |
| 6227828 | Gear pump for use in an electrically-operated sealed compressor A gear pump is used in an electrically-operated sealed compressor. The compressor includes a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting the rotational force of the electric motor to th... | 05/08/2001 |
| 6149408 | Coalescing device and method for removing particles from a rotary gas compressor A compressor system for creating essentially liquid-free fluid flows includes a screw compressor that has an inlet port for receiving a low pressure gas stream, a main lubrication injection port for receiving an injection branch of a filtered lubrication ... | 11/21/2000 |
| 6142757 | Integral oil pump An integral oil pump for an apparatus having a plurality of bearings, the oil pump comprising a housing with an opening for a shaft, a cavity within the housing, a ring gear encircling the shaft with clearance between the shaft and an inner surface of the... | 11/07/2000 |
| 6129531 | Open drive scroll machine An open drive scroll compressor had a unique lubrication system which includes a vane type oil pump attached to an outer diameter of the drive shaft of the compressor. The oil pump draws oil from an oil sump, sends a first portion of the oil to the compon... | 10/10/2000 |
| 6116877 | Gear pump for use in an electrically-operated sealed compressor A gear pump is used in an electrically-operated sealed compressor. The compressor includes a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting the rotational force of the electric motor to th... | 09/12/2000 |
| 6102683 | Compressor installation having water injection and a water treatment device The invention relates to a compressor installation (10) with an injection-cooled compressor (12) and a method for compressing a gas in a compressor installation. In order to allow for an environmentally acceptable compression of gaseous media, the compres... | 08/15/2000 |
| 6039551 | Gear pump for use in an electrically-operated sealed compressor A gear pump is used in an electrically-operated sealed compressor. The compressor includes a compression mechanism, an electric motor for driving the compression mechanism, and a crankshaft for transmitting the rotational force of the electric motor to th... | 03/21/2000 |
| 6017205 | Scroll compressor A scroll-type compressor is disclosed which includes both a high pressure lubricant sump and a low pressure lubricant sump. Lubricant from the low pressure lubricant sump is supplied to the various bearing, thrust surfaces and other moving parts to lubric... | 01/25/2000 |
| 6010320 | Compressor system having an oil separator In a compressor system, a compressor main unit compresses air taken in and exhausts the compressed air with oil. The compressed air and the oil exhausted from the compressor main unit are stored in a reservoir. A head tank has an internal space and is cou... | 01/04/2000 |
| 5947709 | Scroll compressor with oiling mechanism An oil groove is provided in a space surrounded with the outer peripheral portion of an end plate of a revolving scroll, a stationary scroll and a frame on the inner surface of the frame, and lubricating oil attached to the inner surface of the frame by s... | 09/07/1999 |
| 5795136 | Encapsulated rotary screw air compressor A rotary screw compressor system is provided wherein the base plate connecting the prime mover to the compressor integrates the drive transmission with the lubricating fluid flow path between lubricating circuit components. Each of those circuit component... | 08/18/1998 |
| 5785151 | Compressor with improved oil pump and filter assembly A compressor having an oil pick-up tube which filters incoming lubricant, and increases the volumetric pumping capacity of the compressor. The oil pick-up tube is attached to the crankshaft of the compressor, and is partially disposed within an oil sump a... | 07/28/1998 |
| 5727936 | Rotary displacement compressor with liquid circulation system A rotary displacement compressor having an inlet channel for introducing low pressure gas, an outlet channel through which compressed gas escapes, and at least one rotor mounted in bearings and operating in a working space. The compressor includes a liqui... | 03/17/1998 |
| 5716202 | Scroll compressor with oiling mechanism An oil groove is provided in a space surrounded with the outer peripheral portion of an end plate of a revolving scroll, a stationary scroll and a frame on the inner surface of the frame, and lubricating oil attached to the inner surface of the frame by s... | 02/10/1998 |
| 5536153 | Non-contact vane-type fluid displacement machine with lubricant separator and sump arrangement A non-contact vane-type fluid-displacement machine includes a stator housing having an annular interior surface defining an interior bore and a rotor supported in an eccentric position in the interior bore of the stator housing relative to the annular int... | 07/16/1996 |
| 5372490 | Scroll compressor oil pumping system A scroll compressor oil pumping system has a concentric axial bore located in the driveshaft of the compressor which serves as the primary oil pump. The driveshaft is journaled in a lower bearing housing and is located within the oil sump of the compresso... | 12/13/1994 |
| 5368746 | Environmentally beneficial bypass filter system for use with low pressure centrifugal refrigeration equipment A bypass filter system for use in low pressure, centrifugal type refrigeration equipment which allows complete isolation of a submicron filter element from the lubrication system through use of an inlet line shut-off and a return line shut-off. The filter... | 11/29/1994 |
| 5318411 | Compressor with integral filter The filter of a compressor is located in the casing of the compressor. The fluid path includes passages in the casing such that brazed connections are not required between the filter and the parts requiring lubrication.... | 06/07/1994 |
| 5284585 | Apparatus for re-homogenizing a gas/liquid mixture A gas/liquid mixture passes through a duct in which a filter device is interposed, the filter device being disposed such that its outlet duct is essentially vertical. The outlet duct opens out into a collecting enclosure placed above the filter device. A ... | 02/08/1994 |
| 5263832 | Air-cooled oil-free screw compressor An air-cooled oil-free screw compressor is provided with a first lubricating oil circulating flowpassage 1 which extends from an oil tank 20 via an oil pump 21 and an air heat exchanger 22 to cooling jackets 15 and 16 for cooling compressor bodies 12 and ... | 11/23/1993 |
| 5176506 | Vented compressor lubrication system An improved lubrication system for a refrigeration compressor is disclosed which lubrication system incorporates filtering arrangement for filtering lubricant supplied to a two stage lubricant pump and unique venting arrangement for venting gaseous refrig... | 01/05/1993 |
| 5053122 | Oil filtration and exhaust apparatus An oil filtration and exhaust apparatus for filtering particulates and gases from the recirculating oil of a vacuum pump which is adapted to remove gases from a process enclosure. The oil filtration and exhaust apparatus removes particulates and gases fro... | 10/01/1991 |
| 5033944 | Lubricant circuit for a compressor unit and process of circulating lubricant A lubricant circuit and a process for circulating a lubricant through such lubricant circuit of a compressor unit incorporating a planetary rotating compressor having a piston in an opening of a cylinder-piston. One embodiment of a circuit and one embodim... | 07/23/1991 |
| 4780061 | Screw compressor with integral oil cooling A screw compressor assembly includes a motor housing section, a compressor section and an oil separator downstream of the compressor discharge port. The motor housing section defines a flow path for suction gas traveling to the working chamber of the comp... | 10/25/1988 |
| 4761123 | Lubrication arrangement, in an air compressor In the arrangement, a gear housing rotatably journals juxtaposed ends of coacting lobed, male and female rotors on a horizontal plane, and a passageway confined in the housing, on a diagonal plane which tranverses the horizontal plane, conducts oil theret... | 08/02/1988 |
| 4439109 | Pump for pumping a liquid containing solid contaminants A pump for pumping a liquid containing solid contaminants, which pump comprises rotatable pumping means for pumping the liquid from a pump inlet to a pump outlet, a filter for filtering the liquid, auxiliary pumping means for pumping the liquid to the fil... | 03/27/1984 |
| 4420293 | Liquid cooled compressor with improved liquid separation A screw compressor with liquid injection wherein the units previously disposed separately from one another, such as the air filter, liquid separator, and so on, are integrated into a single housing. Various compartments are formed in the housing by means ... | 12/13/1983 |
| 4268230 | Gas ballast for oil sealed mechanical vacuum vane pump A gas ballast device for an oil sealed mechanical rotary vane vacuum pump prevents vapor condensation in the outlet port region of the low vacuum stage of the pump as a vane cyclically approaches the outlet port, whereby molecules of condensed vapor in th... | 05/19/1981 |
