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Patent Searching and Data


Matches 101 - 150 out of 3,276

Document Document Title
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 (...  
WO/2015/003539A1
Multiple helical teeth (1, 2, 7, 8) are disposed on an outer diameter, an inner diameter, or a contacted surface of the outer diameter and the inner diameter of an interference designed shaft rubber seal provided with fixing rings and an...  
WO/2014/075658A3
The invention relates to a vacuum pump (1) 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 characterized in that the noise re...  
WO/2014/191362A1
The spindle compressor is a two-shaft rotary displacement machine which operates without operating fluid. The compressor has a compressor housing which has an inlet (34) and an outlet (35) for a gaseous medium to be pumped and a working ...  
WO/2014/183204A1
A method and system is provided for pressure balancing one or more seals in machines such as expanders and/or compressors using the process fluid which is being expanded or compressed to provide the pressure for pressure balancing the ot...  
WO/2014/083305A3
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 longitudin...  
WO/2014/164830A1
The present invention relates to compression based engine boosting systems, and, more particularly, to a supercharger configuration for higher pressure applications.  
WO/2014/163757A1
A thermal actuator for a rotating shaft shutdown seal that has a piston with a portion of its axial length enclosed within a chamber shell with a material that expands upon a rise in temperature. The portion of the actual length of the p...  
WO/2014/144617A1
Devices and methods for maintaining lubrication of a shaft seal of an open-drive compressor that is operating in a vacuum condition. The external side of the shaft seal allows retention of a volume of lubricant for extending the lifespan...  
WO/2014/138870A1
A rotary device for use with a fluid, having a housing, a rotor, and a vane having a respectively associated wiper. The housing has a tubular surface defining in part a tubular volume, the tubular volume segregated into at least a pumpin...  
WO/2014/132969A1
 Provided is a vane-type rotation device which can suppress damage to the inner peripheral surface of a housing and a tip part of a vane, and can prevent seal leakage from occurring. The present invention comprises: a tubular housing; ...  
WO/2014/117746A1
A rotor seal structure (10), comprising a rotor (11), at least one first seal sheet (14), and at least one abutting piece (151, 152); the rotor is provided with at least one side groove (111, 112); each side groove (111, 112) is provided...  
WO/2014/110930A1
A scroll compressor (100) comprises an orbiting scroll component (160); a fixed scroll component (150); sealing components (PS1, PS2, PS3, PS4, PS5, PS6), wherein the sealing components match a concave part (158) on the orbiting scroll c...  
WO/2014/103974A1
Provided is a gas compressor that supplies high-pressure back pressure to the vanes in the final stage of the compression step. A compressor main body (60) is provided in a housing (10) and has: a rotor (50) in which vane grooves (59) ar...  
WO/2013/068531A3
The controllable vane compressor according to the invention has the advantages that pressure loading of the inner circular-arc-shaped vane surfaces (35) is produced by the selected minimal spring pressure, which acts even at standstill, ...  
WO/2014/004141A3
A supercharger assembly has a rotor housing defining a chamber. A rotor is within the chamber and has an end with an end face. A seal has a seal face adjacent the end face. The seal face and the end face have complex topographies configu...  
WO/2013/165876A3
A positive displacement pump assembly includes a rotor housing defining a rotor cavity, and an end plate configured to at least partially close one end of the rotor cavity. Rotors are supported on and fixed to rotor shafts and extend thr...  
WO/2013/092456A3
Scroll compressors are used for the compression of gases. The disadvantage of said scroll compressors is a very restricted power modulation along with poor energy efficiency, and the aim of the invention is to improve said power modulati...  
WO/2014/050007A1
This rotary compressor (1) is provided with: a cylinder (32) extending in the vertical direction; a piston (35) housed in the cylinder (32) and forming a compression chamber (40) against the cylinder (32); a front head (33) that occludes...  
WO/2014/041680A1
At the interior of the housing (20) of this oil-cooled screw compressor (10), a separated gas supply pathway (59) is delineated for supplying separated gas to a separated gas supply gap (58) delineated between a first sealing unit and se...  
WO/2014/025025A1
This rotary compressor accommodates an electric motor and a compression mechanism that is linked to the electric motor via a rotary shaft in a sealed case. The compression mechanism is provided with: a cylinder having a cylinder chamber;...  
WO/2014/018505A1
Improved seal components for compressors, such as scroll compressors, are provided. Such seal components have a molded composite on a seal plate that is preformed, which serves as an improved face seal for floating seal assemblies. The p...  
WO/2014/006363A1
The present invention provides a scroll pump 60 comprising: a scroll mechanism 62 having an orbiting scroll 64 and a fixed scroll 66; a drive shaft having a concentric shaft portion 68 and an eccentric shaft portion 70 connected to the o...  
WO/2014/008500A1
A sealing joint for a compressor casing, such as a compressor casing for a centrifugal compressor of a chiller, is provided. The sealing joint may be configured to have a first cover and a second cover. A first mating surface of the firs...  
WO/2014/004141A2
A supercharger assembly has a rotor housing defining a chamber. A rotor is within the chamber and has an end with an end face. A seal has a seal face adjacent the end face. The seal face and the end face have complex topographies configu...  
WO/2013/050488A3
A pump fitting has an inlet adaptor (10) for connection to an outlet (39) of a container (38) of fluid and including an inlet passage (10), an outlet passage (11) for fluid and a pump housing (12) between the inlet passage (10) and the o...  
WO/2013/142418A1
A scroll compressor that includes a housing and scroll compressor bodies disposed in the housing as well as a method of operation thereof is provided. The housing is separated into different chambers by a separator. One of the scroll bod...  
WO/2012/127198A3
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 (6) to (116) and for assembly together along respective longitudin...  
WO/2012/116779A3
The invention relates to a rotary slide valve (1) having a flat main body (10) which when used properly is mounted and/or disposed on a rotor (2) within a stator (3) and comprises a first edge (12, 12') facing a first running surface (14...  
WO/2013/067099A1
A compressor for compressing refrigerant in a refrigerant circuit includes a housing defining a compression chamber. A screw rotor is mounted within the housing and configured to form a pocket of high pressure refrigerant and a pocket of...  
WO/2013/057946A1
A rotary compressor having two cylinders (6a, 6b), and two compression elements (4a, 4b) arranged on either side of a partition plate (5), with these compression elements having rolling pistons (8) inside the cylinders (6), and a cranksh...  
WO/2013/053062A1
A pump comprises a housing having an inner contour wall defining a fluid chamber. A rotor mechanism is positioned within the fluid chamber and comprises a belt and a rotatable rotor assembly. The belt is mounted to the rotor assembly. A ...  
WO/2012/004762A3
A pump (1) has a rotor (5) eccentrically rotating within a pumping chamber (20) and a slot (6) housing a pair of vanes (7A, 7B; 70; 71; 72) with a hook-like outline, which are radially slidable with respect to each other and to the slot ...  
WO/2013/018272A1
To provide a pump system for gas exhaust that makes it possible to minimize contamination of process gas with seal gas, and to reduce the amount of seal gas used. This pump system for gas exhaust has a main pump and a sub-pump. The main ...  

Matches 101 - 150 out of 3,276