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WO/2005/088079A1 |
The upper and lower end surfaces (67b, 67c) of a rotary piston (67) are formed with annular seal grooves (91) extending along the annular end surfaces (67b, 67c), and an annular lip seal (92) is fitted in each of the seal grooves (91). T...
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WO/2005/085643A1 |
A vacuum pump, comprising a shaft seal not eroded by corrosive gas and assuring smooth operation. A shaft seal structure (17) is installed on the outer peripheral surfaces of bearing bodies (16M) and (16FM) positioned inside the cylinder...
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WO/2005/071259A1 |
A scroll compressor is provided with a generally spiral wrap having an abradable or conformable coating on radially inner portions of its tip. The coating is not applied to radially outer portions. During operation of the scroll compress...
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WO/2005/067519A2 |
An abradable coating (40) is formed on portions of the flank wall of the wraps (126) of a scroll compressor. The radially outer portions of the flank wall are left uncoated (36), and can bear a force between the scroll wraps. In this man...
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WO/2005/064166A1 |
A scroll compressor, wherein a seal ring (18) for forming a back pressure clearance (S3) at the rear of a movable scroll (22) is adjustably positioned on the end plate (25) of the movable scroll (22) at the seal and leak position since, ...
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WO/2005/052373A2 |
The invention is related to rotary machines, which can be used, for instance, as air compressors. The goal of this invention is to build up efficiency of machine as an air compressor at 5 high-speed rotation. The set task is resolved due...
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WO/2005/052374A1 |
A vacuum pump is provided comprising a pumping mechanism, a drive shaft for driving the pumping mechanism and a gear box connected to the drive shaft for rotating the drive shaft. Pressure control means are provided to define a path to a...
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WO/2005/047705A1 |
A screw-shaped rotor for a vacuum pump comprises an array of mutually spaced bands of abrasive material mounted about the thread of the rotor. During rotor rotation, any contact between the rotor and the stator causes the bands to abrade...
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WO/2005/045249A1 |
Scroll-type pumping apparatus comprises a housing (204), a driving scroll member (206) having an end plate with a first spiral wrap (224) extending therefrom, a driven scroll member (214) having an end plate with a second spiral wrap (22...
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WO/2005/038254A2 |
A scroll compressor, wherein an approximately annular seal part in slidable contact with the end plate of a rotary scroll while spreading from the outermost peripheral inner wall surface of a lap to the outside to have the external wall ...
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WO/2005/021974A1 |
The compressor invention discloses a compressor with a cylinder, a rotor of main shaft within the cylinder to rotate eccentrically, a vane forming a compression chamber and a suction chamber, an inlet inhaling a refrigerant, an outlet di...
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WO/2005/010373A1 |
A suction port (40) radially penetrating a cylinder (23) is formed in the cylinder (23) of a compressing mechanism (30). A joint member (43) is installed on an enclosed container (10). The head end surface of the joint member faces a per...
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WO/2004/111461A1 |
A suction port (40) of a cylinder (23) is connected to a suction tube (42), and discharge ports (56, 57) are opened in a closed container (10) to lead a discharge gas to the outside through a discharge tube (14). A suction pressure chamb...
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WO/2004/111456A1 |
The diameter (d) of an annular seal (11), which divides a back-pressure chamber (12) provided at a rear face of an orbiting scroll component (5) into an inner region (12a) and an outer region (12b), is set equal to or greater than 0.5 ti...
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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 ...
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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...
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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...
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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...
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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...
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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 ...
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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.
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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...
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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...
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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, ...
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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 ...
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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 ...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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)...
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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...
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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...
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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...
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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...
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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...
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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...
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