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| Number | Title | Issue Date |
| 8177534 | Scroll-type fluid displacement apparatus with improved cooling system An axial air cooling system for scroll-type positive fluid displacement apparatus provides needed cooling. The system includes an axial fan and centrifugal pump and internal cooling air channels inside parts integrating main housing, base housing and motor housing w... | 05/15/2012 |
| 7690901 | Helical screw compressor comprising a cooling jacket A screw compressor rotor housing is surrounded by a cooling housing that forms an annular cooling chamber. The cooling chamber is interrupted at one point by a separating wall that connects the rotor housing to the cooling housing. Coolant is fed at an inlet opening... | 04/06/2010 |
| 7419371 | Scroll fluid machine In a scroll fluid machine, a driving shaft extends axially to allow an orbiting scroll to revolve with respect to a fixed scroll thereby compressing a gas introduced from the outer circumference of the fixed scroll in a compressing chamber formed between the orbitin... | 09/02/2008 |
| 7393191 | Internal refrigerant gas circulation apparatus for a closed-type scroll compressor In the case where a radial fan is provided on the upper end side of a rotor to provide an air circulating flow containing refrigerant gas so as not to hinder the flow of lubricating oil in a motor chamber, by which a motor is cooled, in order to reduce the cost of t... | 07/01/2008 |
| 7387503 | Scroll fluid machine having a fixed scroll with a heat-releasing projection In a scroll fluid machine, a fixed scroll has a fixed wrap, and an orbiting scroll has an orbiting wrap which engages with the fixed wrap to form a compressing chamber between the orbiting and fixed wraps. The orbiting scroll is rotatably mounted around an eccentric... | 06/17/2008 |
| 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 |
| 7329108 | Scroll fluid machine A scroll fluid machine comprises a housing having a fixed scroll and an orbiting scroll revolved by a driving shaft which is driven by a motor behind the housing. A blowing fan is provided between the orbiting scroll and the motor. Rotation of the fan causes decompr... | 02/12/2008 |
| 7309219 | Scroll type fluid machinery The present invention provides a scroll type fluid machine which enables both of a fixed scroll and an orbiting scroll to be cooled by means of a cooling fan, and which enables an overall size of the machine to be compact. Cooling fans 38A and 38B are ... | 12/18/2007 |
| 7241121 | Scroll fluid machine A scroll fluid machine has a fixed scroll in a housing and an orbiting scroll rotatably mounted to a driving shaft. A fixed wrap of the fixed scroll is engaged with an orbiting wrap of the orbiting scroll. The orbiting scroll is revolved at a certain eccentricity by... | 07/10/2007 |
| 7179068 | Electric compressor A cooling space in an inverter case is disposed at a position opposed to a stationary scroll of a scroll compressor. A refrigerant having low temperature is allowed to flow in and out between the cooling space and the stationary scroll through a seal, thereby coolin... | 02/20/2007 |
| 7144233 | Scroll fluid machine with a silencer A scroll fluid machine comprises a housing, a driving shaft, a fixed scroll fixed to the housing, and an orbiting scroll. A gas introduced from the outer circumference of the housing is compressed towards the center of the housing with revolution of the orbiting scr... | 12/05/2006 |
| 7121817 | Scroll fluid machine comprising compressing and expanding sections A scroll fluid machine comprises an orbiting scroll and front and rear stationary scrolls. The orbiting scroll is driven by a driving shaft via an eccentric portion and has front and rear orbiting scroll wraps. The front and rear stationary scroll have front and rea... | 10/17/2006 |
| 7121816 | Scroll fluid machine A scroll fluid machine has a fixed scroll in a housing and an orbiting scroll rotatably mounted to a driving shaft. A fixed wrap of the fixed scroll is engaged with an orbiting wrap of the orbiting scroll. The orbiting scroll is revolved at a certain eccentricity by... | 10/17/2006 |
| 7086845 | Vane pump having an abradable coating on the rotor A vane pump includes a cylindrical rotor rotatable inside of an oval-shaped rotor chamber of cam ring disposed between a pressed plate and a pressure plate. The rotor has opposite sides and a peripheral outer surface in which radial vane slots are formed and guide s... | 08/08/2006 |
| 7074024 | Scroll-type fluid machine having a path to pass and cool the fluid A scroll-type fluid machine such as a scroll compressor or a scroll vacuum pump generates compression heat during compressing operation. A scroll body comprises a stationary scroll and an orbiting scroll that is revolved with respect to the stationary scroll eccentr... | 07/11/2006 |
| 7014435 | Scroll fluid machine A scroll fluid machine comprises a stationary scroll and an orbiting scroll fitted on an eccentric portion of a driving shaft. The stationary scroll has a stationary end plate from which inner and outer stationary wraps project, and the orbiting scroll has an orbiti... | 03/21/2006 |
| 7004735 | Scroll-type fluid machine having a path to pass and cool the fluid A scroll-type fluid machine such as a scroll compressor or a scroll vacuum pump generates compression heat during compressing operation. A scroll body comprises a stationary scroll and an orbiting scroll that is revolved with respect to the stationary scroll eccentr... | 02/28/2006 |
| 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 |
| 6905320 | Scroll-type fluid machine A scroll-type fluid machine such as a scroll compressor or a scroll vacuum pump generates compression heat during compressing operation. A scroll body comprises a stationary scroll and an orbiting scroll that is revolved with respect to the stationary scroll eccentr... | 06/14/2005 |
| 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 |
| 6663366 | Compressor having cooling passage integrally formed therein A compressor is composed of a pair of rotors engaging with each other and a driving mechanism having plural gears for driving the pair of rotors. The pair of rotors is disposed in a rotor chamber and the driving mechanism in a gear chamber, both chambers ... | 12/16/2003 |
| 6589026 | Fluid machinery having a helical mechanism with through holes for ventilation A fluid machinery comprises a helical mechanism provided with a cylinder, a roller eccentrically disposed inside the cylinder and formed with a helical groove and a blade member fitted in the helical groove, an electric motor unit connected to the helical... | 07/08/2003 |
| 6579080 | Displacement machine based on the spiral principle A displacement machine for compressible media has two spiral feed chambers (11a, 11b) which are arranged opposite each other in a fixed housing (7a, 7b). Spiral displacement bodies (2-4) engage in these feed chambers. Said displacement bodies essentially ... | 06/17/2003 |
| 6503070 | Rotary piston engine having an oil system for lubrication and cooling A trochoidal design rotary piston engine design has a rotary piston housing with a double curve inner contour and triangular type rotary pistons. Sliding bearings distribute lubricating oil from a pressure cycle into a high pressure circuit and a low pres... | 01/07/2003 |
| 6499977 | Scroll compressor with integral outer housing and a fixed scroll member An improved housing for scroll compressor has the end cap housing formed integrally with the fixed scroll member. The end cap housing is preferably welded to a tubular housing enclosing the scroll compressor. Most preferably, the end housing has inner and... | 12/31/2002 |
| 6416302 | Rotary helical screw-type compressor having a thermally separated oil supply container A screw compressor has a gear housing (1) from one side of which the rotor housing (3) containing the two screw rotors freely projecting outward. An oil supply container (7) is also located freely projecting out from the gear housing (1) approximately par... | 07/09/2002 |
| 6394777 | Cooling gas in a rotary screw type pump A rotary screw type pump is provided with internal cavities within the rotors. The rotors include shaft portions that extend out from the casing that contains the screw portion of the rotors. The cavities extend from the screw portion of the rotors at the... | 05/28/2002 |
| 6379134 | Scroll compressor having paired fixed and moveable scrolls A scroll compressor comprising paired fixed and movable scrolls, the fixed scroll of each pair having an end plate provided with a scroll body projecting from the end plate and the movable scroll of each pair having an end plate provided with a scroll bod... | 04/30/2002 |
| 6371742 | Cooling device The invention concerns a cooling device wherein the chamber (2) represents cooling channels arranged in the thickness of the pump cylinder walls. The steam flux (7) generated by the heat to be evacuated reaches the upper end of the condenser (1) and comes... | 04/16/2002 |
| 6315537 | Spin pump having a cooling sleeve surrounding the drive shaft The invention relates to a spin pump for conveying a liquid polymer melt. To drive the conveying means enclosed in the pump housing, a drive shaft is provided, which extends through the pump housing in a bearing bore, and which comprises an external end f... | 11/13/2001 |
| 6290477 | Scroll vacuum pump The scroll pump has the capability of preserving a minimal play between the joints disposed on the ridges of each of the spiraling walls and the flat wall facing it. Such an arrangement, possible owing to the slight difference in pressure prevailing betwe... | 09/18/2001 |
| 6264447 | Air-cooled shaft seal An air-cooled shaft seal comprises an annular body having an inner surface and an outer surface. One or more helical channels are formed on the inner surface. A plurality of external surfaces such as radial fins are disposed in axially spaced relationship... | 07/24/2001 |
| 6241493 | Spherical fluid machine with control mechanism A rotary fluid machine, such as a pump or motor, is provided with a fluid flow control mechanism that allows the flow of fluid to be easily and precisely controlled. The device has a housing with a spherical interior in which primary and secondary vanes r... | 06/05/2001 |
| 6210132 | Partition means for directing air flow over a cooler in an oilless scroll compressor A cooling fan is fitted to one of the shaft end portions of a double-end motor, and a pulley is fitted to the other end portion. A belt is passed around this pulley and a pulley fitted to a compressor element, and the compressor element is driven by this ... | 04/03/2001 |
| 6193486 | Package-type scroll compressor It is an improvement of a package-type compressor that is used for the air compression, refrigerating and air conditioning. The compressor is a double scroll compressor that a laps are formed on both sides of an end plate of orbiting scroll. A scroll compresso... | 02/27/2001 |
| 6190145 | Scroll fluid machine The present invention is to offer a scroll fluid machine of which the scroll machine proper is cooled sufficiently and effectively and characterized in that, a tubular jacket 26 is provided, said tubular jacket surrounds the outer circumferential surface ... | 02/20/2001 |
| 6179594 | Air-cooled shaft seal An air-cooled shaft seal comprises an annular body having an inner surface and an outer surface. One or more helical channels are formed on the inner surface. A plurality of external surfaces such as radial fins are disposed in axially spaced relationship... | 01/30/2001 |
| 6179590 | Scroll fluid apparatus having axial adjustment mechanisms for the scrolls A scroll mounting member for mounting a drive scroll therein is secured to the left end of a drive shaft coupled to a motor. A rotary bearing is fitted on the outer periphery of the scroll mounting member, and its outer periphery is secured to a scroll ho... | 01/30/2001 |
| 6158989 | Scroll compressor with integral outer housing and fixed scroll member An improved housing for scroll compressor has the end cap housing formed integrally with the fixed scroll member. The end cap housing is preferably welded to a tubular housing enclosing the scroll compressor. Most preferably, the end housing has inner and... | 12/12/2000 |
| 6109897 | Scroll fluid machine having a cooling passage inside the drive shaft A scroll fluid machine is disclosed, which comprises a stationary scroll with an embedded wrap which is spiral in form, extending from a central part of a scroll body toward the outer periphery thereof, and a revolving scroll with an embedded spiral wrap ... | 08/29/2000 |
