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| Number | Title | Issue Date |
| 7632082 | Hermetically sealed compressor and method of manufacturing the same In a hermetically sealed compressor 100 including a rotary compressing element (4) having at least one cylinder (43A, 43B), and a roller (45) provided to the cylinder so as to be freely eccentrically rotatable, an electrically-driv... | 12/15/2009 |
| RE40344 | Scroll machine with ported orbiting scroll member A scroll compressor includes a fluid injection system. The fluid injection system includes a fluid passage which extends from a position outside of the shell of the compressor to the fluid pockets created by the wraps of the scroll members. The fluid passage extends... | 05/27/2008 |
| 7329109 | Oil retention in scroll compressor pump members Oil retention recesses are formed on either or both orbiting and non-orbiting scroll elements. In one embodiment, the recesses are formed in a tip of a wrap of at least one of the scroll members. In another embodiment the recesses are formed on the base of at least ... | 02/12/2008 |
| 7300266 | Orbiting vane compressor incorporating orbiting vane with oil supply function Disclosed herein is an orbiting vane compressor incorporating an orbiting vane with oil supply function that is capable of performing more smooth orbiting movement. The orbiting vane has a compression unit comprising an orbiting vane having a boss formed in the cent... | 11/27/2007 |
| 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 |
| 7237989 | Milling method used for producing structural components A milling method is for producing milled structural components of materials that are difficult to machine by chip-cutting. A milling tool with a tool radius is rotationally driven about an axis of the milling tool to ensure a central rotation thereof, whereby a refe... | 07/03/2007 |
| 7192263 | Pump and ink jet printer mounting the pump The pump is provided with a housing 31, a rotor 40, and a separating member 50. Rotor 40 and separating member 50 are rotated within housing 40. Separating member 50 separates the cavity of housing 31 into a divided space 77a, a divided space 7b and a ... | 03/20/2007 |
| RE39346 | Scroll compressor with lubrication of seals in back pressure chamber A scroll compressor lubrication system includes a number of embodiments where lubricating oil impinges off surfaces adjacent to the orbiting scroll. The impinged oil creates a lubrication mist, which is deposited on the back surface of the orbiting scroll baseplate.... | 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 |
| 7029231 | Liquid seal pump of the helical screw type Liquid seal pump of the helical screw type including a pump housing (3) with an inlet (2), an outlet (6), and within the housing provided a helical screw rotor (7) driven by means of a motor (8). The outlet (6) of the pump (... | 04/18/2006 |
| 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 |
| 6835055 | Rotary vane vacuum pump having a rotor axial seal and an axially bias rotor-drive shaft combination A vacuum pump of the rotary vane type, comprises a casing (50) having a cylindrical inner wall surface (52), a first (54; 54′) and a second (56; 56′) end wall at opposite sides of said casing defining a fluid cavity therein, fluid inl... | 12/28/2004 |
| 6827563 | Scroll compressor for carbon dioxide supplied with a lubricant According to a scroll compressor of the present invention, lubricant is supplied to a compression chamber in the proportions of 2% by weight or more and less than 20% by weight of the lubricant to the sucked refrigerant amount. With this, it is possible to provide a... | 12/07/2004 |
| 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 |
| 6672852 | Lubricant filling device for scroll compressor A lubricant filling device for a scroll compressor has provided a lubricant suction on the circulating scroll connecting through the side of the sleeve to the scroll space; a negative pressure suction being formed due to changed volume in the scroll chamb... | 01/06/2004 |
| 6533562 | Two-stage oil injection into scroll compressors An improved scroll compressor has condition responsive lubricant volume flow. The lubricant is preferably delivered to a tap positioned adjacent the suction chamber such that lubricant is delivered into the scroll compressor in a quantity which is desirab... | 03/18/2003 |
| 6511308 | Scroll vacuum pump with improved performance A scroll compressor having improved efficiencies includes a fixed plate having a spiral involute and an orbiting plate having a spiral involute wrap. The fixed and orbiting plates are positioned in a housing such that the spiral involute wraps mesh with e... | 01/28/2003 |
| 6428295 | Scroll compressor for introducing high-pressure fluid to thrust-face side so as to decrease thrust load imposed on revolving scroll A scroll compressor having a simple structure is disclosed, which effectively decreases the thrust load imposed on the revolving scroll without degrading the compression efficiency. The scroll compressor comprises a casing; a fixed scroll provided in the ... | 08/06/2002 |
| 6422843 | Oil supply cross-hole in orbiting scroll member A scroll compressor includes an oil supply cross-hole extending radially outwardly to the outer peripheral surface of the base of the orbiting scroll. The cross-hole supplies lubricant against the crankcase towers such that lubricant is supplied to both t... | 07/23/2002 |
| 6413062 | Pneumatic motor lubrication The invention relates to a pneumatic motor, in which a rotor (16) driven by compressed air rotates in a cylindrical motor sleeve (14). As a replacement for lubrication with compressed operating air containing oil, as, has hitherto been the conventional pr... | 07/02/2002 |
| 6375444 | Axial pressure seal lubricator A scroll compressor has a unique oil supply port for supplying lubricant to both the seals and the Oldham coupling. The oil supply port is positioned at a location such that it will not likely result in undue amounts of lubricant being entrained into the ... | 04/23/2002 |
| 6350111 | Scroll machine with ported orbiting scroll member A scroll compressor includes a fluid injection system. The fluid injection system includes a fluid passage which extends from a position outside of the shell of the compressor to the fluid pockets created by the wraps of the scroll members. The fluid pass... | 02/26/2002 |
| 6258293 | Refrigeration cycle A refrigerating apparatus comprising a refrigeration cycle comprising at least a compressor, a condenser, a dryer, an expansion mechanism and an evaporator, a refrigerant composed mainly of a fluorocarbon type refrigerant containing no chlorine and having... | 07/10/2001 |
| 6149413 | Scroll compressor with lubrication of seals in back pressure chamber A scroll compressor lubrication system includes a number of embodiments where lubricating oil impinges off surfaces adjacent to the orbiting scroll. The impinged oil creates a lubrication mist, which is deposited on the back surface of the orbiting scroll... | 11/21/2000 |
| 6106253 | Scroll type compressor for gas-injection type refrigerating cycle In a scroll type compressor to be applied to a gas-injection type refrigerating cycle, an injection port is formed in a pressure receiving surface of a front housing, and a communication port is formed in a pressure transmitting surface of a movable scrol... | 08/22/2000 |
| 6074186 | Lubrication systems for scroll compressors An improved scroll compressor lubrication system includes a number of embodiments wherein a lubricant port in the orbiting scroll supplies lubricant to the compression chambers throughout its entire orbiting cycle. The lubricant port is aligned with a rec... | 06/13/2000 |
| 6071100 | Scroll compressor having lubrication of the rotation preventing member A scroll compressor includes a fixed scroll and an orbiting scroll which define therebetween a plurality of compression chambers for compressing fluid introduced via a suction port. The orbiting scroll has a base plate and a shaft portion extending from t... | 06/06/2000 |
| 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 |
| 5931650 | Hermetic electric scroll compressor having a lubricating passage in the orbiting scroll A hermetic electric scroll compressor includes a fixed scroll and an orbiting scroll which define therebetween a plurality of compression spaces for compressing fluid introduced via a suction port. The orbiting scroll has a base plate and a shaft portion ... | 08/03/1999 |
| 5810573 | Scroll compressor having a baffle plate and oil passages in the orbiting scroll member A compression chamber of a scroll compression element driven by a crank shaft of an electromotive element and stored in an upper portion of a closed container is formed by engaging spiral wraps formed on the mirror plates of a fixed scroll member and an o... | 09/22/1998 |
| 5797366 | Toroidal internal combustion engine An internal combustion engine comprises a toroidal combustion chamber housing within which slides at least one piston. The combustion chamber housing has a circumferential longitudinal slot sealed by a ring seal to which the pistons are rigidly attached. ... | 08/25/1998 |
| 5720602 | Pressure biased co-rotational scroll apparatus with enhanced lubrication A high side co-rotational scroll compressor has lubricant sumps in both the discharge and suction pressure portions of its hermetic shell as well as a pressure biasing arrangement by which the scroll members are urged together in operation to minimize int... | 02/24/1998 |
| 5653585 | Apparatus and methods for cooling and sealing rotary helical screw compressors In a compression system which incorporates a rotary helical screw compressor, and for any type of gas or refrigerant, the working liquid oil is atomized through nozzles suspended in, and parallel to, the suction gas flow, or alternatively the nozzles are ... | 08/05/1997 |
| 5645408 | Scroll compressor having optimized oil passages A scroll compressor comprises a generally cylindrical casing and stationary and orbiting scrolls both accommodated in the casing. The stationary and orbiting scrolls engage with each other to define a plurality of compression chambers therebetween. The or... | 07/08/1997 |
| 5616016 | Pressure biased co-rotational scroll apparatus with enhanced lubrication A high side co-rotational scroll compressor has lubricant sumps in both the discharge and suction pressure portions of its hermetic shell as well as a pressure biasing arrangement by which the scroll members are urged together in operation to minimize int... | 04/01/1997 |
| 5545021 | Hermetically sealed rotary compressor having an oil supply capillary passage A hermetically sealed rotary compressor includes a generally cylindrical sealed vessel having an oil reservoir defined therein for accommodating a quantity of lubricating oil, a drive unit within the sealed vessel, and a compressor mechanism within the se... | 08/13/1996 |
| 5462419 | Pressure biased co-rotational scroll apparatus with enhanced lubrication A high side co-rotational scroll compressor has lubricant sumps in both the discharge and suction pressure portions of its hermetic shell as well as a pressure biasing arrangement by which the scroll members are urged together in operation to minimize int... | 10/31/1995 |
| 5449279 | Pressure biased co-rotational scroll apparatus with enhanced lubrication A high side co-rotational scroll compressor has lubricant sumps in both the discharge and suction pressure portions of its hermetic shell as well as a pressure biasing arrangement by which the scroll members are urged together in operation to minimize int... | 09/12/1995 |
| 5447420 | Scroll compressor with liquid injection A scroll-type refrigerant compressor for use in a conventional refrigerating circuit and having liquid refrigerant compressor cooling provided by the injection of liquid refrigerant into an intermediate biasing chamber and/or specifically located bleed ho... | 09/05/1995 |
| 5395224 | Scroll machine lubrication system including the orbiting scroll member A lubrication system for a scroll machine which, to any extent desired, can utilize the centrifugal forces generated by the orbiting of the orbiting scroll member to influence, either positively or negatively, the flow of fluid in a portion of the lubrica... | 03/07/1995 |
