Yamabiko Corporation

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Yusuke Kinoshita

Hiroshi Nishimoto

Hiroki Mutoh

Keijiro Take

Akihiro Okazaki

Keiichi Shimizu

Kazuaki Ishioka

Shusaku Umeda

Kaoru Tsukamoto

Yoshihiro Yamauchi

Tetsuya Aoyama

Daichi Uchino

Naoyuki Kirihara

Tetsuya Kawamoto

Shota Nishihara

Kazuyoshi Tsuji

Masahiko Takashima

Keiko Sameshima

Makoto Hatano

A communication device is a base station that communicates with mobile terminals by radiating communication beams within a coverage, the communication beams including a first beam and a second beam having a shorter radio wave propagation distance than the first beam at a same transmission power, the coverage including a plurality of virtual cells. The communication device includes: a grouping processing unit that groups the plurality of virtual cells such that virtual cells in which mobile terminals capable of uplink communication using the first beam and incapable of uplink communication using the second beam are located are aggregated; and a beam forming unit that controls a radiation direction of the communication beams such that the communication beams are radiated at a same timing to all virtual cells belonging to a same group.

Communication device, control circuit, and storage medium

Provided are: a sending/receiving unit to receive data frames sent from another wireless station and receivable, the receivable data frames including a first data frame that is a relay target; an interference time storage unit to store an interference time that is a time from when the sending/receiving unit starts receiving each of the data frames to when the sending/receiving unit terminates receiving the data frame; a waiting time determination unit to determine a waiting time on a basis of the interference time; a frame generation unit to generate a second data frame by changing a destination of the first data frame to a data aggregation station that aggregates the data frames or to a wireless station that serves as a relay destination; and a transmission control unit to wait for the waiting time and cause the sending/receiving unit to send the second data frame.

Wireless station, data aggregation station, wireless system, transmission control method for wireless station, transmission control method for data aggregation, control circuit, and non-transitory storage medium

The invention is directed to a portable power working machine in which a casing has a side surface in which a suction port is provided. A block prevention guard is attached to the side surface of the casing. The block prevention guard comprises a top surface opening formed in the block prevention guard to at least partially overlap the suction port. The block prevention guard further comprises a plurality of legs standing from the side surface of the casing to maintain the top surface opening at a distance from the side surface. In addition to the top surface surface, an air flow window is formed between two adjacent legs in the circumferential direction of the top surface opening.

Portable power working machine

Provided is a backpack working machine with excellent operability and durability, the machine having a configuration in which a blower is mounted on a backpack frame with a vibration isolation device interposed therebetween, and a drive source and a fuel tank are attached to the blower. The machine includes a backpack frame with a backrest portion, the backrest portion being adapted to abut an operator's back, a blower mounted on the backrest portion with a vibration isolation device interposed therebetween, an engine attached to the blower for driving the blower, and a fuel tank that stores a fuel to be supplied to the engine. The fuel tank is attached to the blower such that the fuel tank is located at at least one of a position below the engine or on a lateral side of the engine.

Backpack working machine

An air blower discharges an air flow generated by rotation of a fan from an outlet port of a fan case. An engine and a carburetor are disposed opposing to an outer surface of the fan case. An engine cover (partition) for separating a space in which the engine is disposed from another space in which the carburetor is disposed is provided. The outer surface including a region having a ventilation hole formed through a wall of the fan case, the region opposing to the space in which the carburetor is disposed and the ventilation hole being directed toward the carburetor.

Air blower

A grip for a backpack-type air blowing machine which performs a work by using air discharged from a distal end of an air blowing pipe that is coupled to a blower body driven by a power source while the air blowing pipe is manipulated by an operator with the power source and the blower body being carried on a back of the operator. The grip comprises a base section that constitutes an attachment section to the air blowing pipe, a vertical grip section that is provided with a proximal end portion provided continuously to the base section, and that extends in a direction away from the air blowing pipe, and a lateral grip section that extends backward along the air blowing pipe from a free end of the vertical grip section. The lateral grip section is located adjacent to a back of a hand of the operator holding the air blowing pipe.

Grip for backpack-type air blowing machine

The air-blow working machine comprises a fan provided in a fan casing and a drive unit to drive the fan, and discharges an airflow generated by the rotating fan. The fan casing has an inner wall disposed between the fan and the drive unit. A smooth surface is formed on the face of the inner wall on the side of the fan. A first concavo-convex portion is formed on the face of the inner wall on the side of the drive unit. Thereby, a noise is reduced without an influence upon performance for blowing air.

Air-blow working machine

A blower tube () to be connected to a power blower has a tube main body () having a distal end portion () diminished in diameter toward its distal end and an attachment () to be coupled to the distal end () of the tube main body () and including a distal end portion () gradually diminished in diameter toward its distal end. Both these distal end portions () are each provided three projections at distant position to protrude radially inward toward an axial line of the blower tube (). The first projections () on the tube main body () and the second projections () on the attachment are positioned offset in phase to align in an alternate order. The blower tube () having the projections () at the distal end portion can reduce the noise caused by ejection of a high-speed airflow.

Air-blow work machine

A method for packet communication including: sending a packet, by a node configured to be moved among different networks, the packet including a sender address being a private sender address; changing the sender address from the private sender address to a global address, even when the sending is performed in any of the different networks.

Method for packet communication and computer program stored on computer readable medium

A foreign agent to which a correspondent terminal is attached receives a Binding Update Message from a home agent so that the foreign agent encapsulates an IP packet destined for a mobile terminalbefore transmission thereto.

Growing community of inventors

Tokyo, Japan

Yusuke Kinoshita