Abstract: A communication apparatus that performs time synchronization using a received time synchronization packet includes a division unit configured to, in a case where an image packet to be transferred to a different communication apparatus exists during a period during which the time synchronization packet is to be transmitted, divide the image packet into a plurality of divided image packets, and a transfer unit configured to transfer the plurality of divided image packets to the different communication apparatus.

Abstract: A flow-path forming block includes: a first block; a second block attached to the first block, the second block having a first flow path and a second flow path; and a gasket provided between the first block and the second block, the gasket being configured to seal between the first block and the second block, wherein the second block has a communication portion formed on a surface facing the gasket, the communication portion being configured such that the first flow path and the second flow path are communicated, and the gasket has a recessed portion formed at a position facing the communication portion.

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 control device includes a first block row and a second block row each including a plurality of joint blocks having a width of the standard size and arranged along a first directions, the first block row and the second block row being arranged at predetermined intervals in the second directions perpendicular to the first directions, wherein each of the plurality of joint blocks constituting the first block row has a large diameter flow path for forming a single line, and each of the plurality of joint blocks constituting the second block row has a smaller diameter flow path than the large diameter flow path for forming the first line and the second line.

Abstract: A flow-path forming block includes: a first block; a second block attached to the first block, the second block having a first flow path and a second flow path; and a gasket provided between the first block and the second block, the gasket being configured to seal between the first block and the second block, wherein the second block has a communication portion formed on a surface facing the gasket, the communication portion being configured such that the first flow path and the second flow path are communicated, and the gasket has a recessed portion formed at a position facing the communication portion.

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 first flow path member has a first sealing surface for supporting one end surface, in a central axis direction, of an annular seal member, and a second flow path member has a second seal surface including a flat surface for supporting a surface of a plate-like member, and a third seal surface for supporting an outer peripheral surface of the annular seal member, wherein: in the annular seal member, an other end surface of the annular seal member is pressed against the back surface of the plate-like member, the one end surface of the annular seal member is pressed against the first seal surface of the first flow path member, and the outer peripheral surface of the annular seal member is pressed against the third seal surface of the second flow path member; and the plate-like member is pressed by the other end surface of the annular seal member.

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: 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: The present invention provides a miniaturized valve device capable of dramatically increasing the degree of freedom in arranging a flow path of a valve body while securing a necessary flow rate. The valve device includes a valve seat support provided in an accommodation recess and having a support surface with which a sealing surface of a valve seat abuts and supports a pressing force from the sealing surface; a diaphragm provided in the accommodation recess so as to abut and be separable from a seating surface of the valve seat and seals the opening side of the accommodation recess; the valve seat support having sealing surfaces which cooperates with a part of the inner wall surface of the accommodation recess to bock the communication between a primary flow path and a secondary flow path, and a detour passage that connects the primary flow path and a flow passage of the valve seat.

Abstract: An actuator includes a casing having a first annular groove formed in an inner peripheral portion thereof; a piston having a second annular groove formed in an outer peripheral portion thereof, provided in the casing to form a pressure chamber together with the casing, and driven by a drive fluid from an outside of the actuator; and an annular seal member having a first fitting portion to be fitted into the first annular groove and a second fitting portion to be fitted into the second annular groove to seal the pressure chamber.

Abstract: A valve device includes: a body having a substantially block shape in which first and second valve chambers are recessed from an upper surface, and three flow paths communicating with the first valve chamber and three flow paths communicating with the second valve chamber are formed inside the body; first and second valve members disposed in the first and second valve chambers, respectively, to switch between communication and disconnection between one of the three flow paths and the other two flow paths; and first and second actuators for respectively driving the first and second valve members, wherein the other two flow paths communicating with the each of valve chambers have respective ports on the lower surface of the body, while the one flow path has a common port on the lower surface of the body.

Abstract: A diaphragm includes: a metal thin plate; and a thin film layer formed over an entirety of a surface on one side of the thin plate.

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 bolt holding member is made of metal and holds a bolt in a fastened member. The bolt holding member includes: a main body portion that has a cylindrical shape; a first engaging piece that extends from the main body portion toward an inside of the main body portion at an incline relative to an axial direction of the main body portion; and a second engaging piece that extends from the main body portion toward an outside of the main body portion at an incline relative to the axial direction of the main body portion.

Abstract: A valve device has a structure more suitable for miniaturization and integration and is used for a semiconductor manufacturing process or the like. A valve device includes: a valve body which is accommodated in an accommodation recess and has a first port and a second port in a bottom surface; and a bonnet nut which has a screw portion formed on an outer periphery thereof and is screwed with the inner periphery of the accommodation recess to press the valve body toward the bottom of the accommodation recess to fix the valve body onto a flow path block. The valve body has first and second annular protrusions for sealing which are formed around the first port and the second port and protrude from a bottom surface. The first and the second annular protrusions are formed so as to share a part thereof.

Abstract: A valve device includes: a valve body which is accommodated in an accommodation recess having a circular cross-sectional shape, and has a first port and a second port in a bottom surface; and a bonnet nut which has an outer screw portion screwed with an inner screw portion formed on an inner periphery of the accommodation recess to press the valve body toward the bottom of the accommodation recess to fix the valve body onto a flow path block. The valve body has an outer peripheral surface portion fitted to an inner peripheral surface portion of the accommodation recess of the flow path block. A convex portion for defining an orientation of the valve body about an axis with respect to the flow path block is formed on the outer peripheral surface portion.

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: Provided is a flow rate adjustment valve of a motor-operated valve type, which overcomes the problems that flow rate adjustment valves of a manual valve type have, while making full use of compactness the manual valves have. The flow rate adjustment valve includes a rotation device that rotates a rotation member to cause a vertically movable body to move vertically. The rotation device includes: a driven gear disposed at an upper end portion of the rotation member; and a motor that rotates a driving gear engaged with the driven gear. The motor, which is a stepping servo motor, is disposed below the driving gear and has a rotary shaft extending upward. The driving gear is fixed to an upper end portion of the rotary shaft.

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.