Abstract: A variable displacement swash plate type compressor includes a first and a second valve body, and a suction and a bleed window. An open degree of the suction window is minimized by the first valve body and an open degree of the bleed window is maximized by the second valve body when a suction pressure is lower than a predetermined suction pressure and a crank chamber pressure is higher than a control pressure. The open degree of the suction window is increased and the open degree of the bleed window is maximized when the suction pressure is higher than the predetermined suction pressure and the crank chamber pressure is higher than the control pressure. The open degree of the suction window and the open degree of the bleed window are decreased when the crank chamber pressure is lower than the control pressure.

Abstract: To provide a mold for a press brake in which an ascending and descending member that is relatively pressed and lowered by an upper table in a press brake is provided vertically movably with respect to a mold base mountable on a lower table in the press brake, an upper surface of a workpiece supporting member provided in the mold base and a lower surface of a workpiece pressing member provided in the ascending and descending member vertically face each other, and the upper surface of the workpiece supporting member is inclined so that a front side thereof becomes relatively lower than the lower surface of the workpiece pressing member.

Abstract: An air filter unit has a pleated filter medium with a zigzag shape in which a fibrous filter medium has been folded multiple times. The coefficients of linear expansion of the space-supporting members provided in each of the multiple folded spaces of the pleated filter medium are equal to or greater than the coefficient of linear expansion of the metal filter frame of the filter unit. The linear expansion coefficients of first space-supporting members are smaller than the linear expansion coefficient of a second space-supporting member. The first space-supporting members are provided in side portion regions including both side portions positioned at outermost sides of the pleated filter medium in a second direction perpendicular to the first direction. The second space-supporting member is provided in a central portion region sandwiched between the side portion regions.

Abstract: A upper tool holder for a press brake includes a holder body; an upper tool clamper provided on the holder body and capable of swinging when replacing the upper tool; an auxiliary urging mechanism that functions as resistance when opening the upper tool clamper further in order to replace the upper tool, and functions so as to support a closing operation when closing the upper tool clamper from a further opened state; and a pusher provided in the auxiliary urging mechanism and urged in a closing direction of the upper tool clamper. According to the upper tool holder, unexpected drop-off of the upper tool can be prevented, so that safety can be improved.

Abstract: A mounting table structure includes a mounting table body, made of a conductive material, for mounting thereon the processing target object and serving as an electrode; a base table, made of a conductive material, disposed below the mounting table body with a gap therebetween in a state insulated from the mounting table body; a support column, connected to the ground side, for supporting the base table; a high frequency power supply line, connected to the mounting table body, for supplying a high frequency bias power to the mounting table body; and a power stabilization capacitor provided between the ground side and a hot side to which the high frequency bias power is applied. Here, an electrostatic capacitance of the power stabilization capacitor is set to be larger than an electrostatic capacitance of a stray capacitance between the mounting table body and the protective cover member.

Abstract: An air filter unit has a pleated filter medium with a zigzag shape in which a fibrous filter medium has been folded multiple times. The coefficients of linear expansion of the space-supporting members provided in each of the multiple folded spaces of the pleated filter medium are equal to or greater than the coefficient of linear expansion of the metal filter frame of the filter unit. The linear expansion coefficients of first space-supporting members are smaller than the linear expansion coefficient of a second space-supporting member. The first space-supporting members are provided in side portion regions including both side portions positioned at outermost sides of the pleated filter medium in a second direction perpendicular to the first direction. The second space-supporting member is provided in a central portion region sandwiched between the side portion regions.

Abstract: An upper tool holder for holding an upper tool of a press brake exchangeably, includes a holder main body; an attachment portion provided on an upper portion of the holder main body; a support portion provided on a lower portion of the holder main body; a clamp provided swingably at a vertically intermediate position of the holder main body; an actuator that includes a pushing member for pushing the upper portion of the clamp to fix the upper tool with the support portion; and an open restriction member that has an open restriction portion for restricting the clamp. The open restriction member is provided at a position distanced from a pushed position of the upper portion of the clamp by the pushing member. According to the upper tool holder, the upper tool can be held firmly by the clamp.

Abstract: An upper tool holder for holding an upper tool of a press brake exchangeably, includes a holder main body; an attachment portion provided on an upper portion of the holder main body; a support portion provided on a lower portion of the holder main body; a clamp provided swingably at a vertically intermediate position of the holder main body; an actuator that includes a pushing member for pushing the upper portion of the clamp to fix the upper tool with the support portion, and an open restriction member that has an open restriction portion for restricting the clamp. The open restriction member is provided at a position distanced from a pushed position of the upper portion of the clamp by the pushing member. According to the upper tool holder, the upper tool can be held firmly by the clamp.

Abstract: A upper tool holder for a press brake includes a holder body; an upper tool clamper provided on the holder body and capable of swinging when replacing the upper tool; an auxiliary urging mechanism that functions as resistance when opening the upper tool clamper further in order to replace the upper tool, and functions so as to support a closing operation when closing the upper tool clamper from a further opened state; and a pusher provided in the auxiliary urging mechanism and urged in a closing direction of the upper tool clamper. According to the upper tool holder, unexpected drop-off of the upper tool can be prevented, so that safety can be improved.

Abstract: A suction throttle valve of a variable displacement compressor having a compressor housing includes a suction chamber, a crank chamber, an inlet, a suction passage, a valve body, a valve housing, an urging member, a valve chamber, and a communication hole. The valve body is provided for adjusting an opening area of the suction passage and movably arranged in the suction passage. The urging member urges the valve body in the direction that decreases the opening area of the suction passage. The communication hole is provided for connecting the suction chamber to the valve housing. An opening area of the communication hole is variable in accordance with the movement of the valve body. Accordingly, the opening area of the communication hole becomes maximum during the maximum displacement operation of the compressor and becomes reduced during the intermediate displacement operation of the compressor.

Abstract: The present invention is directed to provide a device for reducing pulsation in a variable displacement compressor. The compressor is connected to an external refrigerant circuit. The device for reducing pulsation includes a flow passage and a control valve. The control valve includes a valve housing, a spool valve and a damper chamber. The spool valve has formed therethrough a flow hole. The damper chamber communicates with the flow passage adjacent to the external refrigerant circuit through the flow hole. Effective cross-sectional area and effective length of the flow hole are determined based on frequency of a specific pulsation of the refrigerant gas and volume of the damper chamber at the time of the development of the specific pulsation in such a manner that the specific pulsation is developed, resonance effect of a Helmholtz resonator takes place in the damper chamber.

Abstract: A mounting table structure includes a mounting table body, made of a conductive material, for mounting thereon the processing target object and serving as an electrode; a base table, made of a conductive material, disposed below the mounting table body with a gap therebetween in a state insulated from the mounting table body; a support column, connected to the ground side, for supporting the base table; a high frequency power supply line, connected to the mounting table body, for supplying a high frequency bias power to the mounting table body; and a power stabilization capacitor provided between the ground side and a hot side to which the high frequency bias power is applied. Here, an electrostatic capacitance of the power stabilization capacitor is set to be larger than an electrostatic capacitance of a stray capacitance between the mounting table body and the protective cover member.

Abstract: A film forming method includes depositing a metal thin film on a target substrate by generating an inductively coupled plasma in a processing chamber while introducing a plasma generating gas in the processing chamber with the substrate disposed on a placing table, by supplying DC power to a metal target from a DC power source, and by applying high-frequency bias to the placing table. A resputtering method includes resputtering the deposited metal thin film by stopping the generating of the inductively coupled plasma, by stopping the power supply from the DC power source, and by applying the high-frequency bias to the placing table while introducing the plasma generating gas in the processing chamber to form a capacitively coupled plasma in the processing chamber and by attracting ions of the plasma generating gas to the target substrate where the metal thin film is deposited.

Abstract: Provided is a double-pleated air filter where filter elements each of which ensures an inter-pleat gap (air passage) by folding filter media in multiple layers and by defining a pitch, a thickness and a folding shape of the filter media are arranged in the V-bank-shaped structure whereby the air filter can be used with a large air volume due to a low pressure drop.

Abstract: A compressor has a suction throttle valve, which includes a suction passage, a suction port, a valve body, an urging member, a valve chamber, a first communication hole, a closing valve and a valve seat. The closing valve closes the hole of the valve body by pressure difference between the valve chamber and the suction port. The valve seat limits movement of the closing valve toward the suction port. The hole of the valve body is closed when the closing valve is in contact with the valve body, and open when the closing valve is in contact with the valve seat. A communication passage is formed in the closing valve or the valve seat, which enables communication between the hole of the valve body and the suction port when the closing valve is in contact with the valve seat.

Abstract: A suction throttle valve of a compressor has a compressor housing having a suction chamber and a crank chamber. The suction throttle valve includes a suction passage formed in the housing, a suction port provided at an inlet of the suction passage, a valve body movably arranged in the suction passage for adjusting opening of the suction passage, an urging member for urging the valve body toward the suction port, and a valve chamber provided in the suction passage. Refrigerant is drawn into the suction passage through the suction port and then received in the suction chamber. A first communication hole is formed through the housing, through which the valve chamber and the suction chamber are in constant communication with each other. A second communication hole is formed through the housing, through which the valve chamber and the crank chamber are in constant communication with each other.

Abstract: An air filter comprising a filter pack comprising a folded nanofiber filter medium, fitted to a filter frame through a seal material, the nanofiber filter medium being a filter medium for an air filter, comprising a nanofiber filter medium which, when a filter medium face velocity is 5.3 cm/s, has a performance index of collecting target particle diameter of 0.3 ?m, 0.040 (1/Pa) or more, performance index of collecting target particle diameter of 0.1 ?m, 0.030 (1/Pa) or more, and performance index of collecting target particle diameter of 0.05 ?m, 0.050 (1/Pa) or more. By this, a high air volume and low pressure drop type high-performance air filter using a nanofiber filter medium can be provided.

Abstract: A variable displacement compressor in which variable control of displacement is effected through adjustment of a crank chamber pressure, includes: a suction port; a suction chamber; a suction passage establishing communication between the suction port and the suction chamber; and an opening control valve arranged in the suction passage and adapted to adjust the opening of the suction passage based on a pressure difference between a suction pressure in the suction port and the crank chamber pressure.

Abstract: A swash plate type variable displacement compressor includes a crank chamber, a rotary shaft, a swash plate, a piston, a supply passage and first and second bleed passages. The supply passage connecting the crank chamber to a discharge pressure region is provided with a displacement control valve. The pressure in the crank chamber is varied by adjusting the opening of the displacement control valve. The first bleed passage connecting the crank chamber to the suction pressure region is provided with a valve. The second bleed passage constantly connecting the crank chamber to the suction pressure region is provided with a throttle. The valve operates to close the first bleed passage according to the magnitude of centrifugal force generated by the rotation of the rotary shaft.

Abstract: A variable displacement compressor including a drive shaft through which a gas passage extends between front and rear ends of the drive shaft. The gas passage is connected to a suction chamber at the rear end of the drive shaft. The drive shaft includes a first gas inlet passage, which connects the gas passage to a crank chamber through a lip seal, an oil chamber, and a thrust bearing, and a second gas inlet passage, which connects the gas passage to a central portion of the crank chamber. The drive shaft further includes a sleeve movable along the drive shaft as a swash plate inclines to adjust an open amount of the second gas inlet passage in accordance with the inclination angle of the swash plate, that is, the displacement of the compressor.