Matsushita Electric Industrial Co., Ltd.

Matsushita Electric Corporation of America

Naoyuki Ohara

Toru Odachi

Tomonori Kato

Koichi Ito

Seizo Hayashi

Tamaki Nishikori

Hiroshi Mori

Hiroshi Hayakawa

Jirou Kajino

Hiroyuki Kayama

Hidetaka Yabuuchi

Toshiharu Sasaki

Tadashi Matsuyo

Saburo Kajikawa

Hidetoshi Imai

Ryota Shimizu

Masayo Haji

William R Tracy

Masaichi Fukushima

Yasuo Oshima

Kouichi Ito

Shin Yoshida

Kiminori Kato

Miki Yasuno

Atsushi Nakayama

A self-moving cleaner has a main body and comprises an intake opening for suctioning dust, an electric blower for generating airflow to suction dust, a dust receiver for collecting the dust suctioned by the electric blower, rollers driven by drive motors, a power source for supplying electric power to the electric blower and the drive motors, and sensors for optically detecting a distance to an obstacle. An enclosure surrounds the main body, the electric blower, the dust receiver, the power source, and the sensors, wherein the enclosure is transparent or semi-transparent, and the sensors transmit and receive light through the enclosure.

Self-moving cleaner

In the invention, a brush body that is rotated and driven by a motor is disposed in a suction unit and dust is sucked from the suction unit by a blower while exhaust of the blower is sent to the suction unit side through an exhaust passage While the exhaust of the blower is blown to the motor exhaust is blown to the floor for lifting the dust from the floor to enhance the dust collection efficiency, and moreover, if the output of the motor for driving the brush is increased, temperature rise of the motor can be suppressed, and thus durability may be enhanced.

Vacuum cleaner

A vacuum cleaner includes an electric blower generating the suction force; a suction port body on which the suction force of the electric blower acts and which sucks in the dust on the surface to be cleaned; and a centrifugal force dust collection section to collect the dust from the suction port body. The electric blower includes a fan section and a low input type motor to drive the fan section.

Vacuum cleaner using centrifugal force dust collection to prevent filter blinding

In the invention, a brush body that is rotated and driven by a motor is disposed in a suction unit , and dust is sucked from the suction unit by a blower , while exhaust of the blower is sent to the suction unit side through an exhaust passage . While the exhaust of the blower is blown to the motor exhaust is blown to the floor for lifting the dust from the floor to enhance the dust collection efficiency, and moreover, if the output of the motor for driving the brush is increased, temperature rise of the motor can be suppressed, and thus durability may be enhanced.

An electric vacuum cleaner includes a canister housing having an internal chamber and a suction inlet and an exhaust outlet both communicating with that chamber. The vacuum cleaner also includes a suction generator and dust collector both held in the internal chamber. Further, the vacuum cleaner includes a nozzle for picking up dirt and debris and a motor driven agitator and drive motor carried on that nozzle. Finally, a hose and wand assembly are provided. The wand assembly provides fluid communication between the outlet of the nozzle and the hose leading to the suction inlet of the canister housing. The wand assembly includes respective first and second telescoping tubes constructed from metal, an electrical conductor and a telescoping insulator assembly including a channel for receiving and holding the electrical conductor in substantially any respective position of the first and second telescoping tubes.

Vacuum cleaner and wand assembly

A magnetic tape recording and/or reproducing apparatus has a motor driven differential mechanism having racks and pinions, an operatively activatable electromagnetic mechanism having movable levers and a plurality of magnetic coils for moving the levers for engagement with the differential mechanism and a tape transport system adapted to cooperate with the differential mechanism so as to be placed in a desired tape transport operation in accordance with the activational condition of the coils. The apparatus also has a pair of one-way clutches for transmitting the driving power of the motor selectively to the differential mechanism or to the tape transport system in accordance with the rotational direction of the motor.

Operation control device for tape recorders

A device for detecting rotational speed of a tape reel in a tape recording and/or reproducing apparatus by displacing a magnet from a first position where said magnet does not actuate a magnetically sensitive element to a second position where said magnet actuates the element when the rotational speed of a first rotating means adapted to rotate in synchronization with a supply reel exceeds the constant speed of a second rotating means driven by a tape moving means to rotate at a constant speed and coupled to said first rotating means and operating indicating means responsive to said element so as to inform an operator, for example, that only a little tape remains on the supply reel.

Device for detecting rotational speed of a tape reel

Growing community of inventors

Shiga, Japan

Naoyuki Ohara