Patents by Inventor Keiji Hata

Keiji Hata 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).

  • Patent number: 6436062
    Abstract: A massager disposes a roller unit having a plurality of roller rows substantially parallel with each other at an outer periphery to which a vibration of a massage head is provided, the roller unit being swingable about an axial line substantially parallel with axial direction of the roller rows, whereby the plurality of substantially parallel roller rows can be stably engaged with the user's treating body part.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: August 20, 2002
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hironori Iwamoto, Ryuji Yamada, Takaaki Yoshikawa, Keiji Hata, Yoshiyuki Miyake, Mikio Ito
  • Patent number: 6210349
    Abstract: A roller massaging apparatus includes a massaging portion having a plurality of bar-shaped rotatable rollers. The rollers are circumferentially mounted to the massaging portion at a certain interval. The roller massaging apparatus also includes a driving mechanism for rotating the massaging portion around an axis thereof and a stimulating member disposed at an upper side of the massaging portion. The stimulating member is pushed up by the rollers. A mutual positional relationship between the massaging portion and the stimulating member is changed by moving as least one of the massaging portion and the stimulating member.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: April 3, 2001
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Haruhiko Naruse, Keiji Hata, Yoshiyuki Miyake, Toyohito Hasegawa, Mikio Ito
  • Patent number: 6190339
    Abstract: A massage device has first and second massage members. The first massage member performs a circulating motion including (i) a massage zone where the member approaches the second massage member in a locus which swells in an outward direction as seen from a massage arm; and (ii) a release zone where the member separates from the second massage member in a locus which is shorter than the massage zone. The second massage member performs a reciprocal rocking motion in synchronization with the first massage member.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: February 20, 2001
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Mikiharu Imazaike, Hironori Iwamoto, Keiji Hata, Yoshiyuki Miyake, Yoshikazu Okada
  • Patent number: 5997489
    Abstract: A massager comprises a handle, a roller rotatably supported at one end of the handle and having a peripheral surface adopted to contact a human body, and a vibration generating unit for giving a vibration to the roller. A head for incorporating the vibration generating unit therein is formed at the end of the handle. The roller is disposed on an outer surface of the head to which the vibration is applied. The present massager can selectively provide a vibration massage of applying a vibration to a skin through the roller rolled along the skin, and a vibration massage of applying a vibration to a skin through a peripheral portion of the head pressed against the skin. As a result, it is possible to provide an adequate vibration massage in accordance with the circumstances.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: December 7, 1999
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hironori Iwamoto, Sanai Fukui, Haruhiko Naruse, Keiji Hata, Maki Hirakawa, Mikio Ito