Patents by Inventor Naoki Shimokawa

Naoki Shimokawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240097533
    Abstract: A rotor includes a resin magnet and a shaft fixed to the resin magnet. The resin magnet includes a first magnetic flux generating part having a first magnetic pole center and a first inter-pole part and a second magnetic flux generating part having a second magnetic pole center and a second inter-pole part. The first inter-pole part and the second inter-pole part are shifted to each other in a circumferential direction.
    Type: Application
    Filed: October 23, 2023
    Publication date: March 21, 2024
    Inventors: Hiroki ASO, Takaya SHIMOKAWA, Junichiro OYA, Naoki TAMURA
  • Patent number: 5470203
    Abstract: A blower blade assembly has a plurality of blades, at least one of which is provided with a counterbalancer. The counterbalancer is of one-piece construction and includes a first arm having two contact areas spaced apart from each other and adapted to contact the first surface of the fan blade when the counterbalancer is mounted on the fan blade, a second arm having one contact area adapted to contact the second surface of the fan blade when the counterbalancer is mounted on the fan blade, and an elastic connecting bridge connecting the first and second arms together.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: November 28, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Masukazu Mori, Hiroyoshi Yamanaka, Norio Kubota, Naoki Shimokawa
  • Patent number: 4781738
    Abstract: A gas-liquid contactor for varying the mixing ratio of a non-azeotropic refrigerant circulated through a refrigeration cycle, wherein each of pieces of a filler filled in a filler bed of the gas-liquid contactor is composed of a substantially cylindrical member with a peripheral surface having convexities and concavities. This form of the filler provides a voidage in the bed of the filler suitable for upward flow of the gaseous phase of the refrigerant through the filler bed and, at the same time, provides a large area for the contact between the gaseous phase and the liquid phase of the refrigerant by virtue of the presence of many convexities and concavities.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: November 1, 1988
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuhiko Fujiwara, Masahiko Kagami, Takumi Imoto, Naoki Shimokawa
  • Patent number: 4769999
    Abstract: A gas-liquid contactor for varying the mixing ratio of a non-azeotropic refrigerant circulated through a refrigeration cycle. A liquid returning pipe leading from a liquid refrigerant reservoir has a lower end which is opened downward into the container of the gas-liquid contactor at a position substantially on the axis of the container, so that the returned liquid refrigerant can be uniformly distributed over the entire region of the filler bed so as to enhance exchange of heat between the gaseous phase and the liquid phase of the refrigerant. A lower filler holder defining the lower end of a bed of filler in the gas-liquid contactor is convexed upward at its central portion so as to smoothly guide the flow of gaseous phase of the refrigerant into the filler bed.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: September 13, 1988
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuhiko Fujiwara, Masahiko Kagami, Takumi Imoto, Naoki Shimokawa
  • Patent number: 4738116
    Abstract: The present invention provides an air conditioner comprising, at a blowout port, a vertically deflecting vane and a group of the laterally deflecting vanes for respectively vertically and laterally deflecting the wind blown out from the blowout port. The group of the laterally deflecting vanes is partitioned with respect to the center of the blowout port into at least one rightwardly deflecting vane and at least one leftwardly deflecting vane, so that the rightwardly deflecting vane and the leftwardly deflecting vane can be individually operated.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: April 19, 1988
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yasunori Himeno, Naoki Shimokawa, Katsumi Fukuda, Teruo Yamamoto
  • Patent number: 4571950
    Abstract: A method for controlling an air-conditioner wherein the blowing capacity of an indoor fan for supplying air, cooled by an indoor heat-exchanger forming a part of the refrigeration system, into a house room to cool the latter is irregularily switched over between strong and weak states so that a pleasing sensation of a breeze (i.e., a cold wind of an irregularily varying velocity) can be enjoyed by a dweller in the room.
    Type: Grant
    Filed: August 16, 1984
    Date of Patent: February 25, 1986
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeru Nariai, Yasunori Himeno, Naoki Shimokawa