Abstract: The signal transmission paths are transmission path pairs 22, 24 located spaced apart in the arrangement direction of the signal transmission paths 22, 24, the transmission path pairs 22, 24 have two types of pairs, straight pairs 22 and cross pairs 24, the straight pairs 22 and the cross pairs 24 are alternately disposed in the arrangement direction, the signal transmission paths arranged in the arrangement direction form signal transmission path rows, a plurality of the signal transmission path rows are provided, and of two adjacent signal transmission path rows, at least a part of the transmission path pairs 22, 24 of one signal transmission path row in the height direction is offset in the arrangement direction with respect to the transmission path pairs 22, 24 of the other signal transmission path row.

Abstract: The engaging portions 34 of the mating detecting member 30 are provided at locations offset upwardly from the pressure-receiving portion 32A of the operating portion 32 and, when the mating detecting member 30 is located in the retracted position, are positioned in a manner that permits locking engagement, from the rear, with sections of the housing 10 other than the locking arm portion 12; and, when pressure is applied from the rear to the pressure-receiving portion 32A of the operating portion 32 of the mating detecting member 30 located in the retracted position, the location of locking engagement of the engaging portions 34 and the housing 10 is used as a fulcrum to displace the front end of the mating detecting member 30 upward and the abutment portion 35 abuts part of the locking arm portion 12 from the rear.

Abstract: The first board connector 2, at the opposite ends in the connector width direction, has fittings 80 that extend in the connector length direction perpendicular to both the connector width direction and the vertical direction; the fittings 80 have resilient pieces 83 that extend upwardly and are resiliently deformable in the connector width direction; the resilient pieces 83, in the top end portions thereof, have locking portions 83B that protrude outwardly in the connector width direction; the intermediate connector 1 has a housing 20 capable of receiving the first board connector 2 from below; the housing 20 has lateral walls 22 that extend in the connector length direction at the opposite ends in the connector width direction; and the lateral walls 22 have lockable portions 22C-1 lockingly engageable with the locking portions 83B from below at locations corresponding to the resilient pieces 83 in the connector length direction.

Abstract: The intermediate circuit board has a plate-shaped substrate and a plurality of signal transmission line pairs for differential signal transmission extending on a major face of the substrate from one end to the other end of the substrate in the direction of connection to the counterpart connect bodies; the substrate has a fiber cloth formed by braiding a plurality of fibers used to reinforce the substrate in a mesh pattern and a plate-like member made of plastic having the fiber cloth embedded therein; the plurality of signal transmission line pairs have straight pairs and cross pairs disposed in an alternating manner in the width direction of the substrate; and the straight pairs and cross pairs, when viewed in the through-thickness direction of the substrate, are formed extending inclined at an angle relative to the fibers of the fiber cloth.

Abstract: The supported portions of the substrate are positioned offset from the center of the substrate in the vertical direction; adjacent intermediate bodies are provided in orientations vertically inverted relative to each other and every two supported portions are positioned so as to differ by a predetermined dimension P in the vertical direction; the lower lateral walls of the housing have formed therein, in an alternating manner, first lower supporting portions and second lower supporting portions positioned so as to differ by the predetermined dimension P in the vertical direction; the first lower supporting portions protrude upwardly of the second lower supporting portions and support from below the supported portions of the intermediate bodies in which the supported portions are positioned with an upward offset; and the second lower supporting portions support from below the supported portions of the intermediate bodies in which the supported portions are positioned with a downward offset.

Abstract: An air damper is provided. A piston member includes a stopper portion configured to come into contact with a cap in a state that a rod is pulled out to a maximum extent, and a deflection regulating portion configured to be positioned inside the engagement claw in the state to regulate an inward deflection of the engagement claw. An attachment portion rotatably attached to an attachment target portion is provided at an end portion of the rod. A contact surface is formed on the inner side of the engagement claw when viewed in an axial direction of the cylinder, the contact surface being capable of coming into contact with the deflection regulating portion when the rod swings in a direction of a rotation axis of the attachment portion with respect to the attachment target portion or in a direction intersecting the rotation axis.

Abstract: [Problem] To provide an electrical connector capable of adequately ensuring a stable state of electrical communication between ground members.

Abstract: Example implementations described herein are directed to a system involving one or more photonic integrated circuits having multi-mode waveguides and connected to a printed optical board through the use of multi-mode waveguide connectors described herein. The printed optical board can include an embedded multi-mode waveguide bus to facilitate optical signal to and from the photonic integrated circuits. The system can also include a chiplet such as a photonic integrated circuit with a single mode waveguide configured to connect to an optical fiber cable.

Abstract: In an electrical connector wherein signal transmission paths 53 have signal connecting portions 53 C soldered to signal circuit units on a circuit board, ground members 54, 55 have ground connecting portions 54C, 55C soldered to ground circuit units on the circuit board, and the ground connecting portions 54C, 55C are positioned in the arrangement direction of the signal transmission paths 53 between the signal connecting portions 53C of adjacent signal transmission paths, a width range WG between the opposite end locations of the ground connecting portions 54C, 55C of the ground members 54, 55 in the width direction, which is parallel to the mounting surface of the circuit board and perpendicular to the arrangement direction, extends beyond the width range WS of the signal connecting portions 53C of the signal transmission paths 53.

Abstract: The signal transmission paths are transmission path pairs 22, 24 located spaced apart in the arrangement direction of the signal transmission paths 22, 24, the transmission path pairs 22, 24 have two types of pairs, straight pairs 22 and cross pairs 24, the straight pairs 22 and the cross pairs 24 are alternately disposed in the arrangement direction, the signal transmission paths arranged in the arrangement direction form signal transmission path rows, a plurality of the signal transmission path rows are provided, and of two adjacent signal transmission path rows, at least a part of the transmission path pairs 22, 24 of one signal transmission path row in the height direction is offset in the arrangement direction with respect to the transmission path pairs 22, 24 of the other signal transmission path row.

Abstract: An air damper is provided. A piston member includes a stopper portion configured to come into contact with a cap in a state that a rod is pulled out to a maximum extent, and a deflection regulating portion configured to be positioned inside the engagement claw in the state to regulate an inward deflection of the engagement claw. An attachment portion rotatably attached to an attachment target portion is provided at an end portion of the rod. A contact surface is formed on the inner side of the engagement claw when viewed in an axial direction of the cylinder, the contact surface being capable of coming into contact with the deflection regulating portion when the rod swings in a direction of a rotation axis of the attachment portion with respect to the attachment target portion or in a direction intersecting the rotation axis.

Abstract: Example implementations described herein are directed to a system involving one or more photonic integrated circuits having multi-mode waveguides and connected to a printed optical board through the use of multi-mode waveguide connectors described herein. The printed optical board can include an embedded multi-mode waveguide bus to facilitate optical signal to and from the photonic integrated circuits. The system can also include a chiplet such as a photonic integrated circuit with a single mode waveguide configured to connect to an optical fiber cable.

Abstract: First terminals have a contact arm portion and second terminals have a convex contact point portion that is contactable with the intermediate portion of the contact arm portion of the first terminals in the direction of plugging and unplugging of the two connectors. The section of the contact arm portion of the first terminals that extends from the location of contact with the convex contact point portion of the second terminals to the free end portion of the contact arm portion in the direction of plugging and unplugging forms a stub portion. The sections of the first terminals other than the stub portion and the second terminals constitute a main transmission path. In a predetermined range that includes the location of contact in the main transmission path, the impedance of at least a partial range of said predetermined range is made smaller than the impedance of the stub portion.

Abstract: The first terminals have contact arm portions extending in a rectilinear manner in the direction of connector plugging and unplugging; the second terminals have convex contact point portions contactable with an intermediate portion of the contact arm portions in the same direction. When the stub portions of the contact arm portions are divided into a free end side range and a proximal end side range such that the center point of said stub portions in the direction of plugging and unplugging forms a boundary, in the arranged state of the first terminals, impedance at arbitrary locations in the direction of plugging and unplugging within the free end side range is larger than impedance at arbitrary locations in the plugging direction within the proximal end side range.

Abstract: The first terminals have contact arm portions extending in a rectilinear manner in the direction of connector plugging and unplugging; the second terminals have convex contact point portions contactable with an intermediate portion of the contact arm portions in the same direction. When the stub portions of the contact arm portions are divided into a free end side range and a proximal end side range such that the center point of said stub portions in the direction of plugging and unplugging forms a boundary, in the arranged state of the first terminals, impedance at arbitrary locations in the direction of plugging and unplugging within the free end side range is larger than impedance at arbitrary locations in the plugging direction within the proximal end side range.

Abstract: First terminals have a contact arm portion and second terminals have a convex contact point portion that is contactable with the intermediate portion of the contact arm portion of the first terminals in the direction of plugging and unplugging of the two connectors. The section of the contact arm portion of the first terminals that extends from the location of contact with the convex contact point portion of the second terminals to the free end portion of the contact arm portion in the direction of plugging and unplugging forms a stub portion. The sections of the first terminals other than the stub portion and the second terminals constitute a main transmission path. In a predetermined range that includes the location of contact in the main transmission path, the impedance of at least a partial range of said predetermined range is made smaller than the impedance of the stub portion.

Abstract: A plurality of signal terminals are disposed in parallel and comprise an embedded part embedded and held in a base member of insulating material and a protruding part that protrudes from the base member, the protruding part forms a connecting part that is electrically connected by contacting or solder-connecting to a mating connecting body, the base member comprises a main body holding part that covers the entire circumference of the circumferential surface of the signal terminals and holds the signal terminals, and a semi-exposed holding part that exposes a portion of the circumferential surface of the signal terminals while covering and holding the remaining portion, with the protruding part of the signal terminals protruding from the semi-exposed holding part with regard to the main body holding part.

Abstract: Connector with connector elements supported by a support and arranged on a mounting face of a circuit board. The connector elements have terminals arranged in the connector-width direction as well as a stationary retainer and a movable retainer, securing said terminals in place; a metal sheet member having a parallel plate portion extending in the connector-width direction throughout at least a portion of the terminal array range and located on opposite to a lateral face on which the contact portions of the terminals are located; and a biasing portion formed by folding back in the edge portion of said parallel plate portion in the through-thickness direction and faces said parallel plate portion. When connected to a counterpart connector, said biasing portion applies pressure to another adjacent connector element with a biasing force, such that its reaction force applies contact pressure and brings the contact portions in contact with counterpart terminals.

Abstract: The terminals have a connecting portion, formed at one end in the direction of connection of the connector and is connected to a mounting face of a circuit board, and a contact portion, formed at the other end in the above-mentioned direction of connection and has a contact surface brought in contact with a counterpart terminal; the ground plate has resilient strips, which are brought in contact with the above-mentioned terminals; said resilient strips are formed within the range of the above-mentioned contact portions in the above-mentioned direction of connection at locations corresponding to the above-mentioned terminals and are brought in contact with the surface of said terminals on the side opposite to the above-mentioned contact surface; and the above-mentioned terminals have retained portions that extend from the lateral edges of the above-mentioned contact portions extending in the above-mentioned direction of connection and are secured in place by the retainer.

Abstract: The contact portions 22, 122 of the terminals 20, 120 of the two circuit board connectors 1 and the intermediate electrical connector 3 have leaf contact point portions 22B, 122B extending in the above-mentioned direction of connection of the connectors and protruding contact point portions 22A-1, 122A-1 located closer to the free end side of the terminals 20, 120 than to said leaf contact point portions 22B, 122B; and, in a connected state, the protruding contact point portions of the above-mentioned terminals are made contactable with the leaf contact point portions of the counterpart terminals.