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Patent Searching and Data


Matches 751 - 800 out of 3,233

Document Document Title
JP2010242656A
To prevent leakage of a refrigerant between the spiral grooves of a screw rotor while preventing leakage of a high-pressure refrigerant into a bearing holder in a sealing portion between the screw rotor and the bearing holder.The sealing...  
JP2010229832A
To provide a dry vacuum pump and a processing chamber pressure reduction method using the same, for maintaining the isolation property between an interlock mechanism and a pump chamber without using nitrogen gas, and reducing an initial ...  
JP4558349B2  
JP4559343B2  
JP2010209773A
To provide a vane rotary compressor to be used for air-conditioning a vehicle while preventing the chattering of a vane by raising the back pressure of the vane in a stroke of setting itself in a vane groove to stabilize the behavior of ...  
JP4548189B2  
JP2010203422A
To provide a roots type vacuum pump that prevents the generation of an abnormal sound by a confining phenomenon of liquid between root rotors and prevents the shortening of a bearing service life caused by the infiltration of moisture in...  
JP4544388B2  
JP2010180851A
To provide a vane pump operating similarly to a conventionally known vane pump when situating a side plate 4 at a closed position and, when situating the side plate 4 at an opened position, reducing useless torque loss by bringing a plur...  
JP2010163976A
To provide a compressor with small hysteresis which provides highly responsive back-pressure adjusting valve for compressor and which can achieve high COP. A back-pressure adjusting valve 24 is provided with a vertical chamber 21a of whi...  
JP4514106B2  
JP4512479B2  
JP4495976B2  
JP2010144522A
To provide a scroll compressor in which a back pressure partition band is stably sealed and slid uniformly on the entire slidable contact surface of a rotating end plate and the number of parts is reduced, which has high efficiency and h...  
JP2010138744A
To provide a vane rotary type compressor of low noise and high salability.This vane rotary compressor includes a cylinder 3 including a cylindrical hollow part therein, a roughly cylindrical shape rotor 4 rotatably disposed with at least...  
JP2010138798A
To effectively apply the hydraulic pressure supplied to the vane groove to the direction for projecting the vane even in the case a vane is completely embedded in a vane groove in a gas compressor.A vane 58 has a notch 58c formed only in...  
JP2010138891A
To provide a vane rotary type compressor with low noise and high salability. The vane rotary type compressor includes a cylinder 3 having a cylindrical hollow part thereinside, a substantially cylindrical rotor 4 in which at least one po...  
JP4486624B2  
JP2010133373A
To provide a compressor inhibiting increase of labor hour and rise of cost, and maintaining sealing performances of an O-ring. The electric compressor 10 includes discharge grooves 42A, 42B at an outer circumference side of the O-ring 40...  
JP2010133278A
To certainly prevent chattering of a vane in startup.This compressor 1A includes; a rotor 15 provided in a cylinder chamber 14; a plurality of vane grooves formed in the rotor 15; a vane arranged in each vane groove movably in a projecti...  
JP2010133311A
To prevent degradation in sealing state of a mechanical seal even in stop of operation, in a gas compressor.In the compressor 100 (gas compressor), in which a rotational shaft 51 of a compressor body 60 and a housing 10 are sealed by a m...  
JP4482262B2  
JP2010106692A
To provide a scroll compressor in which floating failure of a tip seal due to thermal expansion of the tip seal or swelling of the resin is inhibited.In the scroll compressor 10, tip seals 30 are interposed, being disposed on a contact s...  
JP4461798B2  
JP4454318B2  
JP4440564B2  
JP2010053799A
To solve the problem of an elongated bearing span of a screw compressor as a result of lengthening in the axial direction of the whole shaft seal device for gas when the number of seal rings of the shaft seal device for gas is increased ...  
JP2010048217A
To materialize low cost and reduce material cost by eliminating scrap of a spring member making a back pressure partition band stably seal and slide on a turning end plate, while equalizing a sliding contact surface whole body, and energ...  
JP4419039B2  
JP2010037945A
To install a tip seal with constant press-in dimensions over a whole length when the tip seal is installed in a seal groove of a lap part.A tip seal installation device 21 is constructed to press in and install a tip seal 19 to a seal gr...  
JP2010031794A
To prevent wear between a floating balance weight and a drive shaft by an oil-free type scroll type fluid machine.The drive shaft 15 is provided with a crank pin 16 eccentric from a rotary shaft and a fixed balance weight 22 for maintain...  
JP2010024911A
To provide a scroll compressor capable of improving compression performance by constantly contacting a chip seal to an orbiting scroll and an end plate of a fixed scroll of a counterpart side, and preventing leaking of compressed air fro...  
JP2010007550A
To provide a scroll fluid machine improved in compression efficiency by optimizing the back pressure of a movable scroll to effectively prevent the movable scroll from being overturned while securing the reliability of a scroll unit.This...  
JP4396181B2  
JP2010001816A
To provide a scroll fluid machine improved in volumetric efficiency by easily and surely preventing a refrigerant from leaking into the back pressure chamber of a movable scroll and reduced in machining cost.This scroll fluid machine (1)...  
JP2010001836A
To provide a gas compressor in which wear of a tip of a vane can be effectively suppressed without degrading performance and efficiency of a system.The gas compressor 10 is formed by housing a compressor body 12 in a housing 11. The comp...  
JP4395325B2  
JP4385917B2  
JP2009287413A
To provide a screw fluid machine having an inexpensive and space-saving shaft-seal structure on the discharge side of a rotor shaft.The screw fluid machine 1 can compress an object gas by a male-female intermeshed screw rotor 4 held in a...  
JP2009275567A
To enhance the reliability of a compressor by enhancing a sealing function of a radial seal portion, and preventing fluid from leaking out toward an axial direction of a screw rotor.A screw compressor includes a screw rotor 1 accommodate...  
JP2009270544A
To provide a scroll fluid machine excellent in air-tightness and capable of miniaturization.This scroll fluid machine includes a stator 2, a first casing 10 fixing the stator 2, a rotary shaft 4 rotatably supported by the first casing 10...  
JP2009270581A
To provide an improved vacuum pump in which at least one rotor shaft 12 has a rotor section 14 with a rotor 16, a bearing section 18 with a bearing 20, and a shaft sealing device 22 that is axially provided between the rotor and bearing ...  
JP2009257337A
To prevent transmission of compression heat generated on a scroll side to an orbiting bearing and application of a moment caused by orbiting motion to a main bearing etc.A crank boss part 9 having a bearing storage hole 9A is provided in...  
JP2009250195A
To provide an inexpensive and space-saving screw compressor having a surely sealable shaft seal structure on the high pressure side of a rotor shaft.A first seal member, a second seal member and a third seal member 15, 16 and 17 are arra...  
JP2009250170A
To provide an inexpensive and space-saving screw compressor having a shaft seal structure on the discharge side of a rotor shaft.This screw fluid machine 1 is provided for compressing object gas or converting expansion force of the objec...  
JP4347217B2  
JP4348715B2  
JP2009235987A
To provide a fluid pressure rotary apparatus which can suitably aid a vane so as to abut against an inner peripheral surface of a cylinder and has a high degree of compatibility with its fundamental mode.The fluid pressure rotary apparat...  
JP2009228679A
To provide a positive displacement fluid machine achieving improved volumetric efficiency by improving sealability of an operating chamber.This positive displacement fluid machine includes: a cylindrical rotor 22 mounted on the periphera...  
JP4341205B2  

Matches 751 - 800 out of 3,233