Abstract: A fuel cell is provided with: a membrane electrode assembly (MEA); and a cathode-side separator assembled to the MEA, the cathode-side separator including first passages on a first surface of the cathode-side separator on a side closer to the MEA, and second passages on a second surface of the cathode-side separator on an opposite side, the first and second passages allowing oxidant gas to flow through the first and second passages, respectively. The first passages include first recessed portions on the first surface so as to extend from one end of the cathode-side separator to the other end, the second passages include second recessed portions on the second surface so as to extend from the one end to the other end and to be arranged alternately with the first recessed portions, and a penetration hole on a bottom face of the second recessed portion penetrating through the cathode-side separator.

Abstract: A flying body identification system according to the present example embodiment includes: a flying body; a communication terminal configured to obtain an airframe ID of the flying body; and a control system configured to control an operation of the flying body. The control system is also configured to: manage the airframe ID and a plurality of pieces of information regarding the flying body indicated by the airframe ID so as to be associated with each other; select, in a case where an inquiry message containing the airframe ID and an authority level assigned to the communication terminal is received from the communication terminal, information to be transmitted to the communication terminal among the plurality of pieces of information regarding the flying body associated with the airframe ID in accordance with the authority level of the communication terminal; and transmit the selected information to the communication terminal.

Abstract: An air traffic control system (31) according to the present disclosure includes a communication unit (4) configured to receive, from a communication terminal (40), an image including a flying object (2) captured by the communication terminal (40) and position information about the communication terminal (40), an estimation unit (8) configured to estimate a position of the flying object (2) using background information and the position information included in the image, and an identification unit (5) configured to identify the flying object (2) using the estimated position of the flying object (2). The communication unit (4) transmits information about the identified flying object (2) to the communication terminal (40).

Abstract: A flying object according to example embodiments includes an airframe ID control unit configured to hold an airframe ID of the flying object changed according to a predetermined change pattern, and a communication unit configured to transmit the airframe ID. An air traffic control system according to the example embodiments includes a communication unit configured to acquire a first airframe ID and position information transmitted from a flying object, and an identification unit configured to identify the flying object using the first airframe ID. When the communication unit acquires a second airframe ID different from the first airframe ID after acquiring the first airframe ID, the identification unit determines whether or not the second airframe ID indicates the flying object based on a change between the position information at the time of acquiring the first airframe ID and the position information at the time of acquiring the second airframe ID.

Abstract: A hermetically sealed electromagnetic contactor includes a main contact unit (21) configured to open and close an electrical path of a main circuit by moving along a predetermined opening/closing direction, an electromagnet unit (23) configured to switch opening/closing of the main contact unit (21), a container body (12) made of resin inside which the main contact unit (21) and the electromagnet unit (23) are arranged, an auxiliary contact unit (22) disposed outside the container body (12) on one side in the opening/closing direction of the main contact unit (21) and configured to open and close an electrical path of an auxiliary circuit by moving along the opening/closing direction in conjunction with the main contact unit (21), and an auxiliary contact housing portion (13) made of resin inside which the auxiliary contact unit (22) is arranged, the auxiliary contact housing portion (13) communicating with the inside of the container body (12), in which the insides of the container body (12) and the auxiliar

Abstract: A hermetically sealed electromagnetic contactor includes a pair of fixed contact pieces having fixed contacts, a movable contact piece having a pair of movable contacts and capable of coming into contact with and being separated from the fixed contacts of the pair of fixed contact pieces, an electromagnet unit configured to drive the movable contact piece, a hermetically sealed container configured to house the pair of fixed contact pieces, the movable contact piece, and the electromagnet unit in the same space in a hermetically sealed manner and being filled with arc-extinguishing gas, and two pairs of arc-extinguishing permanent magnets arranged inside the hermetically sealed container and configured to stretch arcs generated between the fixed contacts of the pair of fixed contact pieces and the pair of movable contacts of the movable contact piece.

Abstract: A gas filling structure includes a through-hole (91) formed in a hermetically sealed container (11) made of resin to fill the hermetically sealed container (11) with gas and a screw (92) fastened to the through-hole (91) to seal the through-hole (91).

Abstract: A hermetically sealed electromagnetic contactor including: a main contact unit including a pair of main fixed contact pieces, each of the main fixed contact pieces having a main fixed contact at one end and a terminal portion to be connected to a main circuit at the other end, and a main movable contact piece having a pair of main movable contacts configured to come into contact with and be separated from the main fixed contacts and configured to open and close an electrical path of the main circuit; a contact support configured to support the main movable contact piece; an electromagnet unit configured to switch opening/closing of the main contact unit via the contact support; and a hermetically sealed container made of resin on an inside of which the main contact unit and the electromagnet unit are arranged, the hermetically sealed container having the inside filled with insulating gas.

Abstract: A hermetically sealed electromagnetic contactor including: a pair of fixed contact pieces having fixed contacts; a movable contact piece having a pair of movable contacts capable of coming into contact with and being separated from the fixed contacts of the pair of fixed contact pieces; an electromagnet unit configured to drive the movable contact piece; and a hermetically sealed container configured to house the pair of fixed contact pieces and the movable contact piece in a hermetically sealed manner.

Abstract: An inspection operator can perform a hammering inspection without operation to move an inspection device to a location to be inspected, and the hammering inspection can also be performed to the location to be inspected where a vehicle has difficulty in entering. An inspection system includes a flying device including a hammering inspection unit that performs an inspection and a flying unit that flies with the hammering inspection unit, a ground-side device that is fixedly installed at a position relative to a location to be inspected and detects a position of the flying device, and a flight instruction unit that controls the flying device in such a way that a forwarding direction of the flying device is a direction from the ground-side device to the location to be inspected based on the position of the flying device.

Abstract: The multi-rotor helicopter includes an airframe that is a device main body, and a plurality of fan units configured to raise the airframe. Each of the plurality of fan units has a fan frame supported by the airframe, a propeller axially supported by a support arm integrated with the fan frame and configured to generate a lifting power and a propulsion power, a drive motor driven to rotate the propeller, and a motor driver configured to control a driving current supplied to the drive motor and control rotation of the propeller. The motor driver is provided at a position above the propeller.

Abstract: The present invention makes it possible for sounding of an inspection location on an outer wall of a building or the like to be performed using a simple operation. A user interface device accepts an input for designating an inspection location. The mobile robot device flies autonomously and moves to the inspection location, on the basis of the input into the user interface device and the current location of the mobile robot device. The mobile robot device inspects the inspection location using an inspection means such as a sounding means.

Abstract: There is provided an electromagnetic contactor that ensures appropriately preventing a foreign matter from invading an auxiliary contact mechanism housing chamber from a main contact mechanism housing chamber via a through-hole on a partition wall; and a foreign matter from invading the main contact mechanism housing chamber from the auxiliary contact mechanism housing chamber via the through-hole on the partition wall. With an electromagnetic contactor (1), a main contact mechanism housing chamber (A) and an auxiliary contact mechanism housing chamber (B) are partitioned by a partition wall (10). The partition wall (10) has a through-hole (10a) through which a coupling shaft (34) is inserted. A foreign matter invasion prevention mechanism (60) is provided at a peripheral area of the through-hole (10a).

Abstract: An inspection operator can perform a hammering inspection without operation to move an inspection device to a location to be inspected, and the hammering inspection can also be performed to the location to be inspected where a vehicle has difficulty in entering. An inspection system includes a flying device including a hammering inspection unit that performs an inspection and a flying unit that flies with the hammering inspection unit, a ground-side device that is fixedly installed at a position relative to a location to be inspected and detects a position of the flying device, and a flight instruction unit that controls the flying device in such a way that a forwarding direction of the flying device is a direction from the ground-side device to the location to be inspected based on the position of the flying device.

Abstract: A contact device includes a main contact mechanism including a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to contact with and separate from the pair of main fixed contacts; an auxiliary contact mechanism disposed at a different position from the main contact mechanism, and including a pair of auxiliary fixed contacts and an auxiliary movable contact disposed in an insulating auxiliary contact holding member connected to the movable shaft to contact with and separate from the pair of auxiliary fixed contacts; and a contact housing portion housing the main contact mechanism and the auxiliary contact mechanism. The movable shaft includes a main contact support portion for supporting the main movable contact, and an auxiliary contact support portion for supporting the auxiliary contact holding member. The main contact support portion is divided from the auxiliary contact support portion.

Abstract: There is provided a contact device including an accommodating case that accommodates a main contact point mechanism having fixed contacts, an external terminal that is disposed outside the accommodating case, and a terminal board that passes through the accommodating case and electrically connects the fixed contacts and the external terminal together. The terminal board has a bent portion surface-contacting with side surfaces of the accommodating case.

Abstract: The contact device includes a main contact mechanism that includes a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to be contactable with and separable from the pair of main fixed contacts, an auxiliary contact mechanism that includes a pair of auxiliary fixed contacts and auxiliary movable contacts disposed in an auxiliary contact holding member connected to the movable shaft so as to be contactable with and separable from the pair of auxiliary fixed contacts, and a contact housing portion that houses the main contact mechanism and the auxiliary contact mechanism. The movable shaft has a main contact support portion supporting the main movable contact and an auxiliary contact support portion supporting the auxiliary contact holding member. The main contact support portion and the auxiliary contact support portion are connected to each other via the auxiliary contact holding member.

Abstract: To provide an electromagnetic contactor that enables electrical connection work of connecting the electromagnetic contactor to another electrical component disposed in a current path to be performed easily and efficiently. An electromagnetic contactor includes a main contact portion; an auxiliary contact portion; a contact housing case that houses the main contact portion and the auxiliary contact portion; an electromagnet unit that drives a movable plunger coupled to a connecting shaft of the main contact portion; main contact electrodes project out of a case wall of the contact housing case to an outside; auxiliary contact electrodes that are connected to a pair of fixed contacts of the auxiliary contact portion and project out of the case wall to an outside; and an auxiliary contact external terminal portion that is connected to the auxiliary contact electrodes and is arranged on a portion of the case wall.