Abstract: A predetermined STA includes a station information collection unit collecting from the STA itself and other STAs station information used for selection of STAs performing simultaneous transmission and for control of the simultaneous transmission, and a simultaneous-transmission request unit knowing occurrence of a QoS data frame based on the station information and transmitting a request frame requesting the simultaneous transmission to an AP. The AP includes a station information collection unit; a simultaneous-transmission determination unit selecting a combination of the STAs performing the simultaneous transmission based on the station information by reception of the request frame; and a trigger transmission unit transmitting to each of the STAs performing the simultaneous transmission a trigger frame instructing to performs the simultaneous transmission and including information necessary for controlling the simultaneous transmission.

Abstract: An electrical cable holder has a holder body having a fixing device (for example, anchor part) and a fastening part positioned beneath the fixing device (for example, anchor part) for provisionally placing an electrical cable (for example, power transmission cable); and a movable arm movably supported on the holder body for fastening the electrical cable (for example, power transmission cable) provisionally placed in the fastening part, between the movable arm and the fastening part. A lock device for locking the movable arm in a fastening state, in which the electrical cable (for example, power transmission cable) is fastened by the fastening part, is provided between the movable arm and the fastening part. A stationary device for maintaining a non-fastening state is provided between the holder body and the movable arm.

Abstract: In a system which performs wireless communication from an access point to stations using group identification information, the frequency of uses of group identification information that overlaps with that of another access point is reduced. An association between a station apparatus included in a group that is a target for simultaneous transmission and group identification information is stored, each station apparatus included in the group is notified of the group identification information, group identification information that is being used in the other access point apparatus is acquired, and if group identification information that is being used by the access point apparatus itself overlaps with the group identification information used by the other access point apparatus, the group identification information is changed so as to reduce the number of pieces of overlapping group identification information.

Abstract: A wireless communication apparatus is provided that is capable of performing setting of a wireless LAN access point so that frequency utilization efficiency of an entire wireless communication system that includes wireless LAN access points of different manufacturers and different model numbers is improved.

Abstract: There is provided a wireless communication system which can improve throughputs in wireless communication by effectively using frequency resources. In the wireless communication system including a plurality of wireless communication stations which may operate as wireless communication terminals or wireless base stations, the wireless communication station includes an access right acquisition means of acquiring an access right upon generating transmitting data; a determination means of determining whether or not different data destined to a plurality of wireless communication stations can be transmitted on different channels according to OFDMA; and a data transmitting means of transmitting data to the receivable wireless communication stations using OFDMA when the determination means determines that different data destined to a plurality of wireless communication stations can be transmitted on different channels.

Abstract: In order to provide a wireless communication system capable of improving the throughput of wireless communication by effectively using frequency resources, in a wireless communication system in which a first wireless access point which communicates with one or more wireless stations within a first cell by orthogonal frequency-division multiple access and a second wireless access point which is capable of performing carrier sensing with the first wireless access point and communicates with one or more wireless stations within a second cell by the orthogonal frequency-division multiple access operate in cooperation with each other, the first wireless access point includes a transmission opportunity acquiring unit which acquires a transmission opportunity when data to be transmitted is generated; and a transmitting unit of permission for use which transmits permission for use of channels which are not scheduled to use within the first cell, to the second wireless access point in a period in which the transmissio

Abstract: In a system which performs wireless communication from an access point to stations using group identification information, the frequency of uses of group identification information that overlaps with that of another access point is reduced. An association between a station apparatus included in a group that is a target for simultaneous transmission and group identification information is stored, each station apparatus included in the group is notified of the group identification information, group identification information that is being used in the other access point apparatus is acquired, and if group identification information that is being used by the access point apparatus itself overlaps with the group identification information used by the other access point apparatus, the group identification information is changed so as to reduce the number of pieces of overlapping group identification information.

Abstract: A holding device has an elastic locking piece having an extending part extending to the outside from a locking claw part. The contact part of an unlocking operating piece contacts the outside of the extending part to reduce the unlocking force of the unlocking operating piece. A sawtooth-form part is in a locked state when a locking piece of an elastic locking piece enters the sawtooth-form part. The elastic locking piece has the extending part extending outside from the locking claw part. The unlocking operating piece has a contact part for contacting with the extending part. The contact part contacts the outside of the extending part when the unlocking operating piece is pressed, the locking claw part of the elastic locking piece is ejected from the indented part of the sawtooth-form part by the contact, and the locked state between the sawtooth-form part and the locking claw part is unlocked.

Abstract: A grommet for fixing an object such as a cable along a groove portion of a channel-type steel material can be fixed or freely stopped by using lips of the channel-type steel material. A grommet includes a base leg portion and a flange portion. The base leg portion includes elastic leg pieces elastically protruding toward an outside, bent toward an inside by being pressed by lips when inserted into an inside of a space of the lips, and restored to original state inside a groove portion after passing through the inside of the space of the lips so as to sandwich the lips between the elastic leg pieces and the flange portion from an inside and an outside. At least either one of the base leg portion or the flange portion includes a locking device for locking the object or a locking device of the object.

Abstract: Provided is an esterification reaction product having high waterproof-film-forming properties, providing shiny feeling, and being excellent in moisture-retaining properties. The esterification reaction product is prepared by esterifying component A: 12-hydroxystearic acid polymer having a degree of polymerization of 7 or more, component B: fatty acid other than 12-hydroxystearic acid polymers, and component C: pentaerythritol.

Abstract: An electrical cable holder has a holder body having a fixing device (for example, anchor part) and a fastening part positioned beneath the fixing device (for example, anchor part) for provisionally placing an electrical cable (for example, power transmission cable); and a movable arm movably supported on the holder body for fastening the electrical cable (for example, power transmission cable) provisionally placed in the fastening part, between the movable arm and the fastening part. A lock device for locking the movable arm in a fastening state, in which the electrical cable (for example, power transmission cable) is fastened by the fastening part, is provided between the movable arm and the fastening part. A stationary device for maintaining a non-fastening state is provided between the holder body and the movable arm.

Abstract: A grommet for fixing an object such as a cable along a groove portion of a channel-type steel material can be fixed or freely stopped by using lips of the channel-type steel material. A grommet includes a base leg portion and a flange portion. The base leg portion includes elastic leg pieces elastically protruding toward an outside, bent toward an inside by being pressed by lips when inserted into an inside of a space of the lips, and restored to original state inside a groove portion after passing through the inside of the space of the lips so as to sandwich the lips between the elastic leg pieces and the flange portion from an inside and an outside. At least either one of the base leg portion or the flange portion includes a locking device for locking the object or a locking device of the object.

Abstract: A holding device has an elastic locking piece having an extending part extending to the outside from a locking claw part. The contact part of an unlocking operating piece contacts the outside of the extending part to reduce the unlocking force of the unlocking operating piece. A sawtooth-form part is in a locked state when a locking piece of an elastic locking piece enters the sawtooth-form part. The elastic locking piece has the extending part extending outside from the locking claw part. The unlocking operating piece has a contact part for contacting with the extending part. The contact part contacts the outside of the extending part when the unlocking operating piece is pressed, the locking claw part of the elastic locking piece is ejected from the indented part of the sawtooth-form part by the contact, and the locked state between the sawtooth-form part and the locking claw part is unlocked.

Abstract: Data packets are transmitted between two STAs capable of using plural radio channels and MIMO together, by using idle channels and MIMO. When at least one idle channel has been detected, plural data packets are generated in the same number as the sum of MIMO numbers of the respective idle channels, in which the data packets are generated from one or plural data frames, and plural data packets having the same packet time length are transmitted simultaneously between the two STAs by using the idle channels and MIMO.

Abstract: A leg device for height-adjustably supporting a supported object includes a leg shaft having a male thread portion, and an ascending/descending body supported on the leg shaft to be capable of ascending and descending. The ascending/descending body includes a base having a fixing part to be fixed to the supported object, a through hole for receiving the leg shaft therein, and an elastic piece, a lock body, and a release body. The lock body has an upper part pivotally assembled onto the base, and a female screw part engageable with the male thread portion. The lock body is pushed by the elastic piece toward the leg shaft inserted into the through hole. The release body has an operating part projecting outward from the base, and a striking part positioned inside the base. The release body can be operated to release the lock body.

Abstract: An attachment structure of a storage unit having: a tank casing body; a tank casing door member, and a lock portion; and an operation member, and a push button, wherein: an outer circumference of a storage unit is surrounded with an opening portion of an exterior panel; the push button is protruded from an outer surface of the exterior panel in a mount position of the exterior panel when the exterior panel is in assembling work; and a space for inserting a circumferential edge of the opening portion of the exterior panel is formed on the back of the push button.

Abstract: A transmit-side STA transmits a wireless packet using a wireless channel which has been determined to be idle by both a physical carrier sense for determining based on received power whether the wireless channel is busy or idle and a virtual carrier sense for determining the wireless channel to be busy during set transmission inhibition time. At this time, the transmit-side STA sets transmission time used for the virtual carrier sense to a paired wireless channel which is affected by leakage from a transmitting wireless channel. This allows for setting transmission inhibition time to a paired wireless channel even when the paired wireless channel cannot successfully receive due to the effect caused by leakage from the transmitting wireless channel.

Abstract: A leg device includes a leg shaft with a male thread section having a contact section at a lower end thereof, and an elevating part supported on the leg shaft to be capable of rising and lowering. The elevating part includes a base section having a portion to be fixed to an object, a through hole for inserting the leg shaft, and a locking piece integrated with the base section at one end thereof. The locking piece has a female threaded section on a front surface of the other end thereof for engaging the male threaded section of the leg shaft, and an operation knob on a rear surface of the other end. The base section and locking piece are integrally formed to position the female threaded section of the locking piece inwardly beyond an outer surface of the leg shaft passing through the through hole.

Abstract: A leg device supports an object to be able to adjust a height thereof. The leg device includes a leg shaft with a male screw portion, and an elevation body supported on the leg shaft to move upwardly and downwardly. The elevation body has a fixing portion to be fixed to the supporting object, a base portion with a through hole for the leg shaft, and a lock body portion having an upper end rotatably assembled on the base portion and a lower portion with a female screw portion engaging the male screw portion on a front surface thereof. The base portion has an elastic piece contacting a backside surface of the lock body portion, so that the female screw portion of the lock body portion is pushed against an outer peripheral surface of the leg shaft passing through the through hole.