Tsutomu Shinohara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A method for detecting the concentration of a specified gas contained in a mixed gas includes, in a pressure-type flow rate control device including a restriction portion, an upstream valve provided upstream of the restriction portion, and a pressure sensor for measuring the pressure between the restriction portion and the upstream valve, a step of flowing the mixed gas from the upstream side of the upstream valve in a state in which the pressure on the downstream side of the restriction portion is lower than the pressure on the upstream side of the restriction portion, a step of determining with a pressure sensor pressure drop characteristics occurring after the upstream valve is changed from an open to a closed state, and a step of determining the concentration of the specified gas in the mixed gas based on the pressure drop characteristics.
Abstract: An object of the present invention is to provide a method for producing resin pellets, in which occurrence of defective pellets is suppressed. The method for producing resin pellets of the present invention includes the following steps, and a strand-shaped resin has a diameter of 1.5 to 4.5 mm, is discharged at a take-off speed of 1.5 m/s to 10 m/s, a die has 10 or more die holes, and a strand interval X defined by Formula 2 satisfies the following Formula 1; step 1: discharging a molten thermoplastic resin through a die in the form of a strand; step 2: cooling the discharged strand-shaped resin using a refrigerant; and step 3: cutting the cooled strand-shaped resin to obtain resin pellets; 1.73×a?Xb?2.81×a??Formula 1 a=0.524, b=0.
Abstract: To enable accurate and simple diagnosis of an operation abnormality of a valve. A valve V1 capable of detecting an operation abnormality has a magnet M1 that is attached in the vicinity of a pressing adapter 52 of a stem 53 that slides according to an opening/closing operation of the valve V1, and a magnetic sensor M2 that is attached to a surface acing the stem 53, inside the pressing adapter 52 that presses a peripheral edge of a diaphragm 51, and detects a change in a distance between the magnet M1 and the magnetic sensor M2. Further, an abnormality determination mechanism compares the change in the distance between the magnet M1 and the magnetic sensor M2 at the time of abnormality diagnosis detected by the magnetic sensor M2 and a previously measured change in the distance between the magnet M and the magnetic sensor M2 at the time of normality, and determines whether or not there is an abnormality.
Abstract: Provided is a valve device which can precisely adjust the flow rate while ensuring the flow rate of the fluid. A valve device includes a main actuator which receives a pressure of a supplied drive fluid and moves an operating member to an open position or closed position; an adjusting actuator arranged to receive at least a part of a force generated by the main actuator and for adjusting the position of the operating member positioned at the open position; and a pressure regulator provided in a feed path of the drive fluid to the main actuator and for regulating the pressure of the supplied drive fluid to suppress fluctuation of the pressure of the drive fluid supplied to the main actuator.
Abstract: A valve device allows simple flow rate control when the bulb is opened. Valve device includes: a valve body having a first flow path and a second flow path formed therein; a valve body for closing an opening of the first flow path to shut off a gateway between the first flow path and the second flow path and for opening the first flow path to communicate the first flow path and the second flow path; an operating member for moving between a closed position for closing the opening in the valve body and an open position for opening the opening; and an adjusting actuator for defining an open position of the operating member and having an electrically driven material made of a compound that deforms in response to a change in an electric field, and for changing the defined open position by deformation of the electrically driven material.
Abstract: Provided is a valve device in which influence of a physical impact on a valve element is further reduced. Valve device includes a valve seat disposed around an opening connected to a flow path formed in a valve body, a diaphragm for opening and closing flow path by moving between a contact position and a non-contact position with respect to the valve seat, a presser adapter that contacts a peripheral portion of the diaphragm, a casing that incorporates an actuator for actuating the diaphragm and is fixed on the valve body by being screwed into a screw hole formed in the valve body, and an adapter fixing ring that is screwed into the screw hole and thereby fixed in the valve body while pressing the presser adapter and the diaphragm.
Abstract: To diagnose an abnormality of a fluid control device from an operation of an entire fluid supply line including a plurality of fluid control devices. Provided is an abnormality diagnosis method of a fluid supply line including a plurality of fluid control devices F, V1, and V2 communicating with each other fluid-tightly.
Abstract: A valve device with a built-in orifice is manufacturable with low-cost. The valve body defines an accommodation recess which opens at the surface of the valve body and contains a valve element therein, a primary flow path and a secondary flow path connected to the accommodation recess, the valve element having a sealing portion for blocking direct communication between the primary flow path and the secondary flow path through the accommodation recess, and a through flow passage for making the primary flow path and the secondary flow path communicate through the valve element, wherein an orifice is formed in the through flow passage.
Abstract: A fluid flow path of a joining block includes a vertical flow path and a horizontal flow path. The joining block is constrained on a rail member so as to be capable of moving in a longitudinal direction. A fluid control device is supported by the rail member via the joining block and includes a screw hole, and a tightening bolt that has passed through a body of the fluid control device is screwed into the screw hole. A gasket between the joining block and the body is compressed between the body and the joining block by a tightening force of the tightening bolt. The screw hole includes the tip portion closed above the horizontal flow path and at least partially overlaps the horizontal flow path in a planar view.
Abstract: A flow path assembly incorporating functional components, such as orifices and filters, is provided in which gaps between the functional components and the flow path components defining the flow path are sealed for an extended period of time. An annular elastic member interposed between the flow path members is provided outside the opposing surfaces of the flow path members, the flow path member has a caulking portion, the caulking portion integrates the flow path members and the plate-like member, exerts a force on the flow path member such that one of the opposing surfaces faces the other of the opposing surfaces, seals the gaps between the orifice plate and the opposing surfaces, and the elastic member is crushed between the flow path members to seal the gap between the flow path members.
Abstract: A valve device includes valve elements each having a valve seat, a valve seat support, and a diaphragm provided so as to be able to abut on and separate from the seat surface of the valve seat, the diaphragm making the flow passage of the valve seat and the corresponding secondary flow path communicate through the gap between the diaphragm and the valve seat, and the valve seat support has seal surfaces that cooperate with a part of the inner wall surface of the corresponding accommodation recess to shut off the communication between the corresponding primary flow path and the secondary flow path, and a detour passage that connects the primary flow path and the flow passage of the valve seat, and the valve body defines a communication passage that makes the secondary flow paths communicates with each other.
Abstract: A tool is equipped with a torque sensor, suited for a tightening task of a fastening component of a device such as a fluid control system that requires a large number of fastening components for assembly and has a narrow space for access to the fastening components, and capable of automatically detecting a tightening torque. The tool includes a torque sensor capable of detecting a tightening torque for tightening a fastening component acting on a bit. The torque sensor initiates measurement of the tightening torque when the tightening torque detected exceeds a set threshold value, completes measurement when the tightening torque detected falls below the set threshold value and a set time elapses, and outputs torque-related data formed on the basis of measurement data from measurement initiation to measurement completion and including a measurement time. The torque-related data includes a peak value of the measurement data.
December 3, 2018
September 24, 2020
CONNECTEC JAPAN Corporation, FUJIKIN INCORPORATED
Abstract: A valve device is made more compact and has improved yield strength against a bending moment. The problem is solved by a valve device including a valve body having a block shape, a casing having a tubular shape, incorporating a drive mechanism that drives a valve element that opens and closes the flow path, connected to the valve body, and extending upward from an upper surface of the valve body, and a protective member that comes into contact with the casing having a tubular shape and the valve body, and is for suppressing a stress concentration that occurs between a casing member positioned on a base portion of a casing and the valve body when a bending moment acts as an external force on the casing.
Abstract: An entire fluid supply line constituted by a plurality of fluid control devices is precisely monitored. In addition, the control accuracy of the fluid supply line is improved by suppressing variations in operations of the fluid control devices. A fluid supply line L1 formed from a plurality of fluid control devices F1 and V11 to V14 communicating with each other in a fluid-tight manner includes: a first connection means that connects between a mechanism outside the fluid supply line L1 and a fluid control device on the fluid supply line L1 and F1; and a second connection means that branches from the first connection means on the fluid supply line L1 and is connected to other fluid control devices F1 and V11 to V14.
Abstract: A valve device can be compact, low cost and has a bleed function. A valve body defines an accommodation recess which opens at a surface of the valve body and contains a valve element therein, a primary flow path and a secondary flow path connected to the accommodation recess, the valve element having a sealing portion for blocking direct communication between the primary flow path and the secondary flow path through the accommodation recess, a detour passage for making the primary flow path and the secondary flow path communicate through the valve element, and a bleed hole for making the detour passage and the secondary flow path communicate through the accommodation recess.
Abstract: A valve device is capable of precisely adjusting a flow rate variation due to aging, aging, etc. without using an external sensor. An adjusting actuator includes a piezoelectric element for adjusting the position of the operating member positioned at the open position, and the drive circuit of the adjusting actuator includes a detecting unit for detecting an electric signal related to the amount of strain generated in the piezoelectric element, and a control unit for controlling the adjusting actuator so that the opening degree of the flow path by the valve element becomes the target opening degree based on the electric signal related to the amount of strain of the piezoelectric element.
Abstract: To provide a manual valve device suitable for a miniaturized and integrated fluid control system, the manual valve device includes a casing having a tubular shape and incorporating a drive mechanism, an operation member for activating the drive mechanism, and a cam part that converts a force acting on the operation member into a driving force of the drive mechanism. The manual valve device further includes a protective cover provided on an upper end side of the casing and covering at least a portion of the operation member. The operation member includes an attaching part that allows removable attaching of an auxiliary tool for causing a force required for activation of the drive mechanism to act on the operation member. The protective cover is formed so as to allow access to the attaching part of the operation member by the auxiliary tool.
Abstract: A valve device is capable of precisely adjusting a flow rate variation with time, aging, or the like without using an external sensor or using as few external sensors as possible. The apparatus includes an adjusting actuator for adjusting the position of the operating member positioned at the open position, a communication unit for receiving adjustment information relating to the adjustment of the opening degree of the flow path by the valve element from the outside of the apparatus, and a control unit for adjusting the position of the operating member by driving the adjusting actuator based on the adjustment information.
Abstract: A pipe joint includes a first member, a second member, a weld experiencing transverse contraction and joining a first outer cylindrical end portion and a second outer cylindrical end portion butted with their end faces meeting over the entire circumference, an annular sealed area produced by the transverse contraction of the weld causing a first pressing portion and a second pressing portion to be displaced toward each other, a heat transmission suppressing member arranged in a space delimited by a weld forming area and a to-be-sealed area, inside the first and second members assembled, to suppress transmission of heat applied in welding from the weld forming area to a to-be-sealed area, and a first stop ring fitted in an outer cylindrical surface of the heat transmission suppressing member to hold the heat transmission suppressing member against an inner surface of the first or the second member.
Abstract: A joint block includes a block body, a closing member mounted in a recessed part formed on the other end side of the block body, a seal mechanism that includes a circular projection formed on an opposing surface of the block body, and seals an area between the block body and the closing member by the circular projection biting into the other opposing surface around an opening of a first flow path, a swaging part that is formed on the block body and presses the closing member toward the opposing surface, and an engaging part formed by an inner peripheral part of the recessed part and an outer peripheral part of the closing member that engages with the inner peripheral part. A pressing force that presses the circular projection of the seal mechanism against the other opposing surface is shared by the swaging part and the engaging part.