Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 301 - 350 out of 3,225

Document Document Title
WO1999009205A3
Method for detecting clear cell type renal carcinoma in a mammal comprising determining the concentration of Na,K-ATPase's beta -subunit in a biological sample. Alternatively the concentration of N-linked sugar residues, lactosamine resi...  
WO/1999/017066A1
A control for a refrigeration system serviced by a special pulse width modulated compressor (30) coupled to a condenser (32) and evaporator (42). The system can be of the distributed type wherein the condenser (32) and compressor (30) ma...  
WO/1999/015764A1
A scroll-type fluid displacement device (10) has two interfitting spiral-shaped scroll members (50, 60) which have predetermined geometric configuration. The novel design provides a flow diverter mechanism (24) which directs intake fluid...  
WO/1999/013224A1
The invention relates to a rotary screw machine that is completely oil-free. Known rotary screw machines with cooling, sealing, lubrication of the screw rotors and oil-lubrication and oil-cooling of the bearings have been replaced with w...  
WO/1999/011936A1
A number of scroll compressor designs protect the back chamber seals (34, 36, 68, 70, 94, 96, 123, 124, 140, 142) upon reverse rotation. In the prior art, scroll compressors are sometimes miswired and inadvertent reverse rotation results...  
WO/1999/009205A2
Method for detecting clear cell type renal carcinoma in a mammal comprising determining the concentration of Na,K-ATPase's $g(b)-subunit in a biological sample. Alternatively the concentration of N-linked sugar residues, lactosamine resi...  
WO/1998/042951A1
Disclosed is a steam-driven propeller engine, characterized by the fact that it comprises a device for the equilibration of the propulsion force in the bearing assemblies that are produced on the propeller side; the invention further com...  
WO/1998/040628A1
The invention relates to a pump which drives liquid at least part of the time and has a shaft seal (4) and a shaft bearing (5) acting upon the same shaft (3) outside said shaft seal. The intermediate chamber (8) is connected to a vacuum ...  
WO/1998/037327A1
Vacuum pumping apparatus includes a non-scroll type auxiliary pump (60) and a scroll pump (62) disposed in a single housing (52). The auxiliary pump and the scroll pump are connected in series and are driven by a common motor (68). Typic...  
WO/1998/027341A1
This invention relates to a new structure of Roots blower or Roots vacuum pump with a multi-lobes impeller and a reverse flow unit, the lobes of the impeller having a top width and according with the following equation: $g(g)�1? $m(G) ...  
WO/1998/017895A1
A scroll fluid displacement apparatus (10) with improved tangential and radial sealing means is disclosed. The apparatus comprises scroll members (36, 38) including meshing involutes which are angularly offset such that they define one o...  
WO/1998/007988A1
The invention concerns a dry vacuum machine (1), in particular a rotary piston vacuum pump, with an oil-free passage for a shaft (6) through a partition wall (5) which separates the suction chamber (3) of the vacuum machine (1) from an o...  
WO/1997/047888A1
the invention relates to a process for starting a positive-displacement machine (1), according the spiral principle, with a two-part housing (2, 3) and an orbiter (8) guided axially therein. One of opposing surface regions is coated with...  
WO/1997/045642A1
A scroll compressor (A) provided with a partition wall (25) dividing an inner space of a casing (1) into a discharge chamber (22) and suction chamber (23) and having a discharge port (25b) allowing communication between the discharge cha...  
WO/1997/044585A1
In order to improve a spiral compressor, comprising a compressor housing (10), a first spiral (12) fitted in the compressor housing, a second spiral (14) also fitted therein, a drive (44, 46) by means of which one of the spirals can be m...  
WO/1997/017545A1
The aim is to improve a compressor comprising the following elements: a helical compressor with a first compressor element and a second compressor element whose helical ribs in the form of circle involutes engage with one another and can...  
WO/1997/017543A1
The aim is to improve a compressor comprising the following elements: a helical compressor with a first compressor element and a second compressor element whose helical ribs in the form of circle involutes engage with one another and can...  
WO/1997/005389A1
In a totally oil-free spiral compressor (1) with high suction volume flows and compression ratio, useful in particular to generate compressed air for rail vehicles, the spirals are arranged on one side only and measures are taken to comp...  
WO/1996/035056A1
An improved axial sealing apparatus for a scroll type apparatus which is capable of constantly maintaining pressure in a back pressure chamber by forming a back pressure hole at a predetermined portion in which the back pressure hole is ...  
WO/1996/033338A1
The machine comprises a housing (1) containing a high-pressure chamber (2) which houses intermeshing drive and driven screws (3 and 4 respectively) which are intermeshed. The screws (3, 4) are securely mounted on shafts (5, 6) which are ...  
WO/1996/020345A1
A scroll compressor having a housing (10) containing an orbiting scroll (12) and a non-orbiting scroll (14) each having a base (16, 18) formed with a free side (17, 19) and a compression side (20, 22) and having an involute (24, 26) exte...  
WO/1996/019667A1
A compressor comprising a rear side member (20) that includes a rear head (6) fixed to one end of a cam ring (1), and a movable plate (4) held by the rear head (6) to face one end of a rotor (2) and capable of moving along the axis of a ...  
WO/1995/027143A1
A scroll compressor (1) includes a fixed scroll member (73) and an orbiting scroll member (71). The scroll members each include a plate having an inboard surface and an outboard surface. A spiral involute or wrap (81 and 87) is formed on...  
WO/1995/021329A1
The invention relates specifically to a simplified and subsequently improved method to produce a scroll type vacuum pump that is capable of achieving vacuum pressures below 1 torr through the placement of at least one dynamic orbital vac...  
WO/1995/020719A1
A scroll-type fluid displacement apparatus has two interfitting spiral-shaped scroll members (50, 60) which have predetermined geometric configurations. The novel design provides desired displacement and a high built-in volume ratio, whi...  
WO/1995/017605A1
A liquid ring vacuum pump has a rotor mounted on a driving shaft (3) that extends outwards through at least one wall of the pump housing (1) and that is sealed at its leadthrough (4) by a sealing element (5). In order to prevent the seal...  
WO/1995/012759A1
A scroll compressor in which an axial compliance equal to that ina conventional scroll compressor is realized during a steady running, i.e., the tips and roots of plate-like spiral teeth are allowed to slide with a slight contacting forc...  
WO/1995/008713A1
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 operati...  
WO/1995/006820A1
A compressor which has a fixed scroll (2) and a movable scroll (9). The two scrolls (2, 9) have base members (11, 13) and helical walls (12, 14) formed integrally with the base members (11, 13). These scrolls (2, 9) are meshed with each ...  
WO/1995/005540A1
A vacuum pump (1) has an oil separator (42) connected downstream of its outlet (33) and a duct (45, 46) through which the oil separated in the oil separator (42) is returned to the vacuum pump (1). To feed back the oil in a simple manner...  
WO/1995/004223A1
The invention pertains to a vacuum pump (1) with a closable line (63, 102) through which gas ballast can be fed into the pump chamber (8, 9). To eliminate the danger that a recipient hooked up to the vacuum pump may be charged with air i...  
WO/1994/027050A1
In a rotary screw compressor having its drive shaft (14) extending through the low pressure end section into a cavity having a pressure above the delivery pressure, seal means (17) are provided around the drive shaft (14). That cavity ca...  
WO/1994/015100A1
In a rotary screw compressor at least one of the shaft journals (11) of the rotors (10) has a seal arrangement between the rotor (10) and the bearings (12), which seal arrangement includes at least three frictionless seals (13, 14, 15) s...  
WO/1994/012792A1
A process and device are disclosed for reducing the gap between a static part (2) and a movable part (1). A gas compatible with the working media of the installation is at first and temporarily introduced into the area of the gap, where ...  
WO/1994/008139A1
A hydraulic pump/motor as a hydraulic pump or hydraulic motor having a rotating type rotor characterized in that a rotor accommodating chamber having a circular cross section is formed in a housing, that a rotor is accommodated in said r...  
WO/1993/017220A1
A tip seal supporting structure for use in a scroll fluid device includes intermeshing involute scroll elements (84, 91) mounted for relative orbital movement. Each of the scroll elements includes an involute spiral wrap (88, 93) which i...  
WO/1992/021881A1
Grooves (20-27) in equal number are formed on the end surfaces (19a and 19b) of a roller (19), respectively, communicating portions (20a-27a) for establishing communication between the above-mentioned grooves and the inner periphery of t...  
WO/1992/015786A1
The invention concerns a device for supplying with inert gas a multi-stage dry-running vacuum pump (1) having devices for distributing the inert gas to the pump stages. In order to be able to monitor the flow of inert gas and/or to influ...  
WO/1992/014059A1
The invention relates to a dry-running vacuum pump (1) with at least one vertical shaft (2, 3) supported in an upper bearing plate (14) by a lubricated roller bearing (27) located in a cup component (51) open at the top. In order to redu...  
WO/1992/014060A1
A dry-running twin-shaft vacuum pump (1) with at least one expansion chamber (11, 12, 13), a pair of rotors (4, 5; 6, 7; 8, 9) in the expansion chamber and driven by the shafts (2, 3) and a gear casing (21). In order to limit the regions...  
WO/1991/018207A1
A scroll compressor provided with a control member mounted on one of first and second scrolls rotating in the same direction, for controlling the axial movement of the other scroll, a pressure chamber communicating with a compression spa...  
WO/1991/006773A1
A spring member (23) is confined between a back pressure sealing band (21) and a ring groove (22) formed in a bearing member (18) housing this back pressure sealing band (21) so as to constantly press the back pressure sealing band (21) ...  
WO/1991/006763A1
A scroll compressor: in which a revolving bearing (18b) to provide slide-connection between a driving shaft (4) and revolving scroll (18) for the purpose of imparting revolving movement to the main bearing (12) supporting the driving sha...  
WO/1991/006764A1
A scroll compressor in which: an annular ring (94) to separate the side of high pressure lubricant space (oil chamber A (78a)) communicating with spiral oil grooves (41a), (41b) formed on the sliding surface of a bearing (18b) for induci...  
WO/1991/006766A1
A scroll compressor, in which revolving spiral blade part (13) is subjected to an intermediate pressure between pressures on the outlet and inlet sides at the back thereof, is provided with such means as controlling and cooling the above...  
WO/1991/006765A1
A scroll compressor in which an axially extending minute space in the compression chamber is ensured by energizing the revolving scroll (18) toward the compression chamber while utilizing the pressure of discharged refrigerant gas introd...  
WO/1991/006771A1
When a spring (15) or (17) made for the use in the stationary scroll (3) or revolving one (4), respectively, is used interchangeably, that is, (15) for (4) and (17) for (3), as a chip seal of the scroll, even if the direction of a raised...  
WO/1991/003647A1
A pump (10) has a body (11) with a material inlet (12) and outlet (13). The pump has a pair of intermeshing screw shafts (22, 23) and a pump driver (26). The shafts (22, 23) are journalled for rotation and, according to one aspect of the...  
WO/1989/008782A1
A pump uses the pump housing as a foundation and comprises a working space (7) for product-feeding units. The bearing axles (10) of the units are pre-assembled in bearing sleeves which can be introduced so that the axles extend into the ...  
WO/1986/007416A1
Arrangement in an oil-free rotary gas compressor (2) having a high, built-in pressure ratio and provided with means (13) for injecting a vaporizable liquid, preferably water, into the compressor for cooling the gas during the compression...  

Matches 301 - 350 out of 3,225