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Matches 51 - 100 out of 3,233

Document Document Title
WO/2017/202346A1
A positioning and seal assembly, comprises N positioning roller-balls (927) and a seal holder (926) in a two-layer ring-shaped structure, the seal holder (926) comprising an inner ring portion (926a) and an outer ring portion (926b); the...  
WO/2017/199001A1
Liquid Ring pumps are inherently inefficient due to energy losses caused by friction, the present invention overcomes this by providing a coating on certain surfaces of the pump to limit the friction.  
WO/2017/188702A1
A means for controlling back pressure in a scroll compressor according to the present invention relates to a means for controlling back pressure in a scroll compressor, which regulates back pressure applied to an orbiting scroll and a fi...  
WO/2017/188557A1
A scroll compressor according to the present invention comprises: a motor unit providing driving force; an orbiting scroll made to orbit by the motor unit; a fixed scroll coupled to the orbiting scroll to define a compression chamber tog...  
WO/2017/189090A1
A positive displacement device includes a first cylinder, a second cylinder disposed within the first cylinder, and a third cylinder disposed around the first cylinder. An interior surface of the first cylinder and an exterior surface of...  
WO/2017/183783A1
The present invention relates to a compressor comprising: a motor for generating a driving force; a compression mechanism driven by the motor so as to compress a refrigerant; an inverter for controlling the motor; a connector for electri...  
WO/2017/181335A1
A rotary compressor comprises a cylinder body (100), a front cylinder cover (200), and a rear cylinder cover (300). An off-center rolling rotary compression device (P) is disposed in a cylinder (140) of the cylinder body (100). The off-c...  
WO/2017/175945A1
A motor-operated compressor includes a casing having an inner space in which a driving motor, an orbiting scroll and a fixed scroll are accommodated, and a controller provided outside the casing. The casing includes an intake hole formed...  
WO/2017/169523A1
The purpose of the present invention is to provide a case-sealing structure for which sealing between cases using an O-ring has been improved. The case-sealing structure seals between the fastening surfaces 57 and 59 of a fixed scroll 24...  
WO/2017/163770A1
The present invention addresses the problem of providing a vane pump configured so that an increase in the number of parts can be suppressed and so that the sealing performance between sliding surfaces can be easily ensured. A vane pump ...  
WO/2017/163017A1
A scroll pump (10) has a fixed scroll (26) and an orbiting scroll (28). The base members (38, 46) of the scrolls are provided with respective base seals (54, 56) to seal between the major surfaces (36, 44) of the base members (38, 46) an...  
WO/2017/164153A1
Provided is an oil free screw compressor 10 that comprises: a screw rotor 14 that is provided with a screw part 14a and a shaft part 14c; a bearing 26; a first shaft sealing device 30 that is disposed between the screw part and the beari...  
WO/2017/144868A1
A scroll pump tip seal (146) to be fitted to a tip face (34) of a scroll wall (28) of a first scroll of a scroll pump to seal between the tip face and a base plate of a second scroll of the scroll pump has a first end (158), a second end...  
WO/2017/144098A1
In order to optimize a compressor comprising a compressor housing, a scroll compressor unit which is arranged in the compressor housing with a first compressor body and a second compressor body which can be moved relative to the first co...  
WO/2017/144870A1
A scroll pump tip seal to seal a single stage of a scroll pump that includes a first scroll (22) and a second scroll (20). The tip seal is formed of a plurality of seal segments (46(1) to 46(n)) fitted contiguously end to end to a tip fa...  
WO/2017/144869A1
A scroll pump tip seal (246) to be fitted to a tip face of a scroll wall of a first scroll of a scroll pump to seal between said tip face and a base plate of a second scroll of the scroll pump. The tip seal is made of metal and has at le...  
WO/2017/140718A1
The scroll compression device includes a first scroll element (11) having a first base plate (13) and a first spiral wrap (14); a second scroll element (12) having a second base plate (15) and a second spiral wrap (16), one of the first ...  
WO/2017/124999A1
A seal assembly (800) for use with a scroll compressor and a scroll compressor (10) comprising the seal assembly (800), the scroll compressor (10) comprising a first member and a second member. The seal assembly (800) is disposed between...  
WO/2017/122458A1
An oil-free screw compressor is provided with: a screw rotor (16); a bearing (22) for supporting a rotor shaft (21); a shaft seal device (30) having an oil seal (31) which is disposed on the bearing (22) side and a gas seal (40) which is...  
WO/2017/106030A1
A scroll compressor includes a housing and scroll compressor bodies disposed in the housing. The scroll bodies include first and second scroll bodies. The first and second scroll bodies have respective bases and respective scroll ribs th...  
WO/2017/099664A1
A bearing arrangement for a unit that is mutually turnable around a centre of rotation (R) comprising an external part (1) and an internal part (7), which, with the aid of high hydraulically acting pressure, is arranged to achieve a reci...  
WO/2017/089156A1
The invention relates to a vacuum pump (100) with a substantially cylindrical pump housing (10) in which a rotor with slide elements is rotationally mounted and which has at least one air outlet opening (11). A pot-shaped silencer hood (...  
WO/2017/076803A1
The invention relates to a dry vacuum pump, comprising a pump housing, which forms a plurality of suction chambers, wherein rotor elements are arranged in the suction chambers, in order to convey a pump medium from a high-vacuum-side inl...  
WO/2017/056713A1
The purpose of the present invention is to obtain excellent sealability through a simple and cheap structure in which an O ring is used. The sealing structure according to the present invention is provided with: one sealing surface (2a),...  
WO/2017/034669A1
A supercharger that receives and/or generates high pressure boost air and contains gear lubrication includes a housing, a rotor coupled to a rotor shaft rotatably supported in the housing, and a high pressure rotor seal disposed about th...  
WO/2017/031134A1
A supercharger rotor comprising a plurality of lobes around a center axis, each lobe of the plurality of lobes comprising a rotor profile. The rotor profile comprises a tip, a convex addendum comprised of at least two interpolated and st...  
WO/2017/026744A1
A compressor includes a discharge guide provided to communicate a discharge port and a bypass port to a discharge cover so that refrigerant discharged from the discharge port and the bypass port is guided to the discharge cover and a mid...  
WO/2017/023943A1
A compressor may include a non-orbiting scroll, an orbiting scroll, a drive shaft, a bearing housing and an annular seal. The non-orbiting scroll includes a first spiral wrap. The orbiting scroll includes an end plate having a second spi...  
WO/2017/021695A1
The present invention relates to a multi-stage vacuum pump comprising: first and second half-shell stator components (102). (104) defining a plurality of pumping chambers (106) to (116) and for assembly together along respective longitud...  
WO/2017/016644A1
The invention relates to a compressor having at least one cylinder (24), which has an internal wall (23), and a piston (26) that is rotatably mounted in the cylinder (24), eccentrically with respect to the longitudinal axis (25) of the l...  
WO/2016/161488A3
Method for manufacturing a scroll type apparatus, characterized in that said method comprises the following steps of: - providing an end plate (1) with a spiral element (2) provided thereon; - manufacturing a tip seal (4) and/or a dust s...  
WO/2016/161488A2
Method for manufacturing a scroll type apparatus, characterized in that said method comprises the following steps of: - providing an end plate (1) with a spiral element (2) provided thereon; - manufacturing a tip seal (4) and/or a dust s...  
WO/2016/129242A1
A compressor compresses fluid sucked in from the outside and discharges the compressed fluid. The compressor is provided with a cylinder (27), a rotor (26), a drive section (12), a compression section (11), and a valve mechanism (18). Th...  
WO/2015/026850A9
Methods and apparatus pertaining to positive displacement pumps, and further to hydraulic actuation systems. In some embodiments the pumps are gear pumps with bi- directional operation. In some embodiments the actuation system includes a...  
WO/2016/104274A1
In the present invention, the back-pressure space (77) of a vane groove (75) that no longer communicates with an intermediate pressure supply groove (67) communicates with a first supply part (69a) and is supplied with high pressure from...  
WO/2016/095982A1
An electric motor (10) configured to come into contact with a lubricating medium comprises a housing defining an interior (120) and exterior (130) of the electric motor (10). The housing comprises a first end shield (30) with a shaft ope...  
WO/2016/052297A1
Provided is an oil-free screw compressor that minimizes the pressure loss at an annular space for connecting an open air hole and a communication hole and that prevents lubricating oil from flowing in during unloading operation. The oil-...  
WO/2016/052503A1
In the present invention, a scroll compressor is provided with a fixed scroll and a rotating scroll, and by causing the rotating scroll to rotate, a suction chamber and a compression chamber are formed. In addition, the following are pro...  
WO/2016/052298A1
 An oil-free screw compressor having: a screw rotor provided with a screw part and a shaft part; a bearing for supporting the shaft part; a first seal part disposed between the screw part and the bearing, the first seal part facing the...  
WO/2016/050005A1
Disclosed is a sliding and swing mechanism, comprising an isolating body rod (1), a chord-arc structural body (2) and a circular arc hole (3). Two chord-arc structural bodies (2) are arranged in the circular arc hole (3). The isolating b...  
WO/2016/052296A1
Provided is an oil-free screw compressor that can prevent lubricating oil from flowing in and maintain compression performance. The oil-free screw compressor is provided with: a casing 12 that has a rotor chamber 150; a bearing 22 that s...  
WO/2016/012758A1
The present invention relates to a multi-stage vacuum pump comprising: first and second half-shell stator components (102, 104) and first and second end stator components (22, 124) which when assembled define a plurality of pumping chamb...  
WO/2015/185177A1
The invention relates to a vacuum pump (1) suitable for mounting to an engine, comprising a casing (2) having a cavity (4), and a moveable member (14) arranged for rotation inside the cavity (4), wherein the cavity (4) is provided with a...  
WO/2015/154907A1
The invention relates to a motor vehicle vacuum pump comprising a pump housing surface on which a noise absorption cap is mounted, said cap defining a noise damping volume.  
WO/2015/136803A1
Provided is an oil-free screw compressor having a shaft sealing device with good assembly properties and enabling the leakage of compressed gas from the shaft sealing device to be reduced. In the oil-free screw compressor (1): a pair of ...  
WO/2015/125596A1
[Problem] To provide a displacement compressor that is provided with a discharge mechanism that is highly efficient and that greatly reduces factors that lower the efficiency of a compression mechanism unit, such as internal leakage of a...  
WO/2015/011004A3
A chemical processing article comprising at least one part made of a poly(arylether sulfone) polymeric material comprising at least one poly(arylether sulfone) polymer, wherein said (t-PAES) polymer comprising more than 50% moles of recu...  
WO/2014/075660A3
The invention relates to a vacuum pump for a motor vehicle, comprising a pump housing surface (8), on which a noise reduction hood (30) delimiting a sound damping volume is mounted. The invention is characterised in that a multi-function...  
WO/2015/026850A1
Methods and apparatus pertaining to positive displacement pumps, and further to hydraulic actuation systems. In some embodiments the pumps are gear pumps with bi- directional operation. In some embodiments the actuation system includes a...  
WO/2015/013849A1
A wear compensation device for a pump end face wear plate comprises a wear plate (1), a wedge block (2) and a push rod (3). The wear plate (1) is flexible and is mounted between the pump body (4) and the pump cover (5), the wedge block (...  

Matches 51 - 100 out of 3,233