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Patent Searching and Data


Matches 251 - 300 out of 3,256

Document Document Title
WO/2004/099619A1
Screw type liquid ring pump including a pump housing (9) with an inlet part (3) and an outlet part (11) and an, inside the housing, rotating helical screw rotor (8). The rotor is connected with a shaft (7) which is commonly provided for ...  
WO/2004/099620A1
A seal assembly for the protection of a static seal device for use in a vacuum pump. The seal assembly comprising at least two components which are sealingly connected together, an o-ring seal, which is engaged between the two components...  
WO2004074687A3
The invention relates to vacuum pumps provided with plastic vanes or blades and used, in particular for a brake booster in motor vehicles.  
WO/2004/079199A1
To counter downstream oil infiltration through a shaft seal, a small portion of the compressed fluid is diverted from downstream to upstream through a passageway in a rotor. The diverted fluid is introduced to a space at a downstream sid...  
WO/2004/079197A1
A vacuum pump, comprising a pair of screw rotors having a first screw rotor with a plurality of spiral land parts and a second screw rotor with a plurality of spiral groove parts and rotating about two axes substantially parallel with ea...  
WO/2004/078548A1
The invention relates to a pump such as a vane-cell pump, a roller cell pump, or a gear pump, especially a vacuum pump. Said pump comprises a housing and a housing cover, rotary displacers such as a rotor and vanes or rolls or toothed wh...  
WO/2004/076863A1
The present invention relates to a scroll compressor which comprises: a scroll assembly comprising two scroll walls (84, 98); and a drive for causing a relative orbiting motion between the scroll walls for compressing fluid on two fluid ...  
WO/2004/074687A2
The invention relates to vacuum pumps provided with plastic vanes or blades and used, in particular for a brake booster in motor vehicles.  
WO/2004/072483A1
A method of assembling a scroll pump comprises the following steps carried out sequentially: the step of mounting a first bearing means (20) and drive shaft (14) for rotation relative to a housing (12); the step of fastening a first flan...  
WO/2004/061310A1
A compressor has a housing assembly and at least one rotor held by the housing assembly for rotation about a rotor axis. The rotor has a first face and a first housing element has a second face in facing spaced-apart relation to the firs...  
WO/2004/036046A1
A vane type vacuum pump having a rotor (34) for rotating a vane (42) while sliding it on a housing (21) and provided concentrically with a rotary shaft (31) between the housing and the rotor, substantially over the entire circumference, ...  
WO/2004/033915A1
The present invention relates to a rotary compressor and is concerned with that type of compressor which is of oil sealed type, that is to say the type in which oil is injected into the compression space and is subsequently removed from ...  
WO/2004/033917A1
The present invention relates to a rotary compressor and is concerned with that type of compressor which is of oil sealed type, that is to say the type in which oil is injected into the compression space and is subsequently removed from ...  
WO/2004/033931A1
The invention relates to a powder-metallurgically produced piston body for a piston-cylinder arrangement, particularly shock absorber pistons, comprising a one-piece piston body (6), the peripheral surface of which is provided with a rev...  
WO/2004/022974A1
An early warning system for equipment or processes which can be permanently or temporarily damaged by contaminants coming from air moving equipment, such as a compressor, positioned upstream of air flowing through the equipment. The pres...  
WO/2004/011808A1
A flow-limiting member (70) on the outer periphery of which a spiral passage (60a) is formed is inserted in a high-pressure oil introducing passage (60) inside an end plate (26a) of a movable scroll (26). The high-pressure oil introducin...  
WO/2003/104657A1
A rotary compressor lubricating bearings (32, 34, 45) through a main lubrication passage (51) formed in a drive shaft (17) utilizing the pressure difference in a casing (10), wherein the drive shaft (17) and the bearings (32, 34, 45) are...  
WO/2003/102421A1
An adjustment mechanism (56) for generating overturn- prevention moment is provided in a scroll-type compressor (1). In a revolution angle region where overturning moment acting on a movable scroll (26) during its revolution is equal to ...  
WO/2003/087540A1
The invention includes a' floating scroll' mechanism for scroll type fluid displacement apparatus (10). The dual orbiting scroll (60) has spiral vanes (62, 62') on both sides of the end plate (61, 61'). In a floating scroll, the orbiting...  
WO/2003/083308A1
A rotary compressor, wherein a peripheral groove (42) allowing the contraction of a casing (10) at a welded position between the shell part (11) and the end plate (12) of the casing (10) is provided in the outer peripheral surface (40) o...  
WO/2003/074879A1
A scroll compressor, wherein an oil feed passage (50) to the pressing surfaces of a fixed scroll (21) and a movable scroll (22) is utilized as a high-pressure inlet route when a differential pressure is high, and when the high-pressure i...  
WO/2003/071134A1
The vacuum pump (10) comprises at least one rotor shaft (12) having a rotor section (14) with a rotor (16), a bearing section (18) with a bearing (20), and a shaft sealing system (22) that is axially situated between the rotor section (1...  
WO/2003/036089A1
A mechanical booster (1) provided with a motor (3) in tight contact with to the mechanical booster body (2) and rotating the shaft part (4) thereof in order to enhance reliability at the shaft seal part of the mechanical booster and to s...  
WO/2003/027440A1
A rotary fluid machine comprising a rotor chamber (14) formed in a casing, a rotor (41) rotatably received in rotor chamber (14), a plurality of vane grooves (49) radially formed in the rotor (41), a plurality of vanes (48) slidably supp...  
WO/2003/014571A1
The present invention relates to a compressor, and more particularly, to a compressor for continuously extruding and feeding a compressing medium introduced into a compressing chamber, by means of a pressing pin member being elastically ...  
WO2002052205A3
The invention relates to a compressor for refrigerating agents, comprising a housing, and a spiral compressor which is located in the housing and which has a first compressor body that is fixed in the housing and a second compressor body...  
WO/2002/097275A1
Liquid seal pump of the helical screw type including a pump housing (3) with an inlet (2), outlet (6) and within the housing provided helical screw rotor (7) driven by means of a motor (8). The outlet (6) of the pump (3) is provided with...  
WO2001094793A9
The invention relates to a pump (30; 130) comprising at least one piston (32) which rotates in a pump chamber (31) and can be driven by means of a rotating shaft (2). Said shaft (2) is rotatably mounted by means of one or more mounting p...  
WO/2002/070900A1
The invention relates to a water-injected screw compressor, comprising a compressor element (2) with a housing (7) which borders a compression chamber (8) in which two rotors (9, 10) are installed, which, by means of an axle ends (13, 14...  
WO/2002/063171A1
A scroll compressor, wherein a pressure Pm1 (MPa) in a boss part outside space determined by a choke or a flow control valve installed in an oil feed line is set to Pm1=Ps+$g(a), and an $g(a) value in the above expression where the minim...  
WO/2002/061285A1
A scroll compressor that is easy of back pressure adjustment and capable of realizing high compression efficiency. The scroll compressor comprises a plurality of compression spaces formed by fixed spiral blades meshing with rotary spiral...  
WO/2002/061283A2
A scroll compressor (1) having improved efficiencies includes a fixed plate (3) having a spiral involute (5), and an orbiting plate (7) having a spiral volute (13), which are positioned in a housing that the spiral involute wraps (5, 13)...  
WO2002016773A8
The invention concerns a vacuum pump consisting in the assembly of two stator half-shells (101, 102) and two directly mounted end parts (31, 32) with an interposed single-piece continuous pressure seal (33). The pressure seal (33) compri...  
WO/2002/052205A2
The invention relates to a compressor for refrigerating agents, comprising a housing, and a spiral compressor which is located in the housing and which has a first compressor body that is fixed in the housing and a second compressor body...  
WO/2002/038961A1
The invention relates to a method for sealing the shaft (4) of a rotor (2) of a compressor element, between a rotor chamber (3) formed in a housing (3), in which at least one rotor (1) for the compression of gas is situated, and a bearin...  
WO/2002/033238A1
A fluid power transfer device (20) includes a wobble plate assembly (26) having a wobble plate (58) that rolls against truncated cone portions (42) of a housing (22) and has an inner extremity 60) rotatably supported by an axially inclin...  
WO/2002/016773A1
The invention concerns a vacuum pump consisting in the assembly of two stator half-shells (101, 102) and two directly mounted end parts (31, 32) with an interposed single-piece continuous pressure seal (33). The pressure seal (33) compri...  
WO/2002/016740A1
The invention relates to the power, aviation and gas industries, metallurgy, chemical engineering etc., in particular to the aircraft motor engineering, turbine engineering, and compressor and pump engineering. The inventive labyrinth he...  
WO/2002/014694A1
The invention relates to a screw-type compressor, comprising a compressor screw housing and two screw rotors with screw bodies which are located in the compressor screw housing and which engage with each other; and with shaft sections on...  
WO/2001/098661A1
A scroll compressor comprising a back pressure chamber (HR) formed at the other side of an end plate (12a) of a stationary scroll (12), the stationary scroll (12) being pressed against a revolving scroll (13) by introducing a compressed ...  
WO/2001/094855A1
Disclosed herein is a system and method for controlling the degree of superheat of an air conditioner. The air conditioner includes a compressor controlled in a pulse width modulation manner according to duty control signals, a condenser...  
WO/2001/094859A1
A system for controlling the starting of an air conditioner includes a compressor controlled in a pulse width modulation according to a duty cycle control signal, an electronic expansion valve for expanding refrigerant compressed in the ...  
WO/2001/094857A1
A system includes a compressor and an expansion valve. The exit side of the compressor and the inlet side of the expansion valve are connected by a high pressure conduit, and the exit side of the expansion valve and the inlet side of the...  
WO/2001/094793A1
The invention relates to a pump (30; 130) comprising at least one piston (32) which rotates in a pump chamber (31) and can be driven by means of a rotating shaft (2). Said shaft (2) is rotatably mounted by means of one or more mounting p...  
WO/2001/081766A1
The invention relates to a screw-type vacuum pump (10) comprising two intermeshing screw-type rotors (12, 14) and at least two chambers (20, 21, 22) having different chamber volumes. Two adjacent chambers are directly interconnected by a...  
WO/2001/069087A1
A 2-cylinder, 2-stage compression type rotary compressor of internal intermediate pressure type, comprising an electric motor part (14) stored in a closed container (12) and upper and lower cylinders (40) and (42) driven by the rotating ...  
WO/2001/042658A1
A scroll type compressor, wherein a compression chamber (16) is formed of a fixed scroll (2) and a movable scroll (4), a first back pressure chamber (14) is formed at the rear of the movable scroll (4), fluid with a delivery pressure is ...  
WO/2001/038740A1
A scroll type compressor, comprising a fixed scroll (21) fixed to the inside of a casing (10) and a movable scroll (22) meshing with the fixed scroll (21), wherein the movable scroll (22) is pressed against the fixed scroll (21), a press...  
WO/2000/053932A1
A rotary helical screw-type compressor has a transmission housing (1) from the one side of which the rotor housing (3) which accommodates the two screw rotors freely projects. An oil reservoir (8) is positioned substantially parallel to ...  
WO/2000/053931A1
Every one of the pressure-side journals of the shaft (23, 29) of the rotors of a rotary helical screw-type compressor is arranged in the rotor housing (3) on a system of angular ball bearings (91, 93) which have no end play. Said bearing...  

Matches 251 - 300 out of 3,256