Patents by Inventor Hiromi Obata

Hiromi Obata 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).

  • Rotation shaft seal
    Patent number: 6764080
    Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: July 20, 2004
    Assignees: Mitsubishi Cable Industries, Ltd., Kabushiki Kaisya Toyoda Jidoshokki Seisakusho
    Inventors: Atsushi Hosokawa, Hiromi Obata, Takeshi Baba, Tomoya Inagaki, Toshiro Fujii, Takayuki Imai, Naoya Yokomachi, Kazuo Murakami
  • Rotation shaft seal
    Patent number: 6715769
    Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: April 6, 2004
    Assignees: Mitsubishi Cable Industries, Ltd., Kabushiki Kaisya Toyoda Jidoshokki Seisakusho
    Inventors: Atsushi Hosokawa, Hiromi Obata, Takeshi Baba, Tomoya Inagaki, Toshiro Fujii, Takayuki Imai, Naoya Yokomachi, Kazuo Murakami
  • Rotation shaft seal
    Publication number: 20020089124
    Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 11, 2002
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Atsushi Hosokawa, Hiromi Obata, Takeshi Baba, Tomoya Inagaki, Toshiro Fujii, Takayuki Imai, Naoya Yokomachi, Kazuo Murakami
  • Rotation shaft seal
    Publication number: 20020089125
    Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 11, 2002
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Atsushi Hosokawa, Hiromi Obata, Takeshi Baba, Tomoya Inagaki, Toshiro Fujii, Takayuki Imai, Naoya Yokomachi, Kazuo Murakami
  • Rotation shaft seal
    Patent number: 6367811
    Abstract: A rotating shaft seal provided with a seal element, arranged between a housing and a rotation shaft, which contacts the rotation shaft, and a seal member made of rubber having a lip end portion, disposed on a fluid storing chamber side to the seal element, which contacts the rotation shaft, comprising a supporting metal for supporting a rear face of the seal member of rubber.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: April 9, 2002
    Assignees: Mitsubishi Cable Industries, Ltd., Kabushiki Kaisya Toyoda Jidoshokki Seisakusho
    Inventors: Atsushi Hosokawa, Hiromi Obata, Takeshi Baba, Tomoya Inagaki, Toshiro Fujii, Takayuki Imai, Naoya Yokomachi, Kazuo Murakami
  • Shaft seal
    Publication number: 20010030398
    Abstract: A shaft seal provided with a front seal member, disposed on a fluid storing chamber side and having a lip end portion of rubber which slides on a rotation shaft in rotation state. And the shaft seal is provided with a rear seal member disposed on a low pressure side and having a lip end portion of rubber which contacts the rotation shaft in static state.
    Type: Application
    Filed: April 11, 2001
    Publication date: October 18, 2001
    Applicant: MITSUBISHI CABLE INDUSTRIES, LTD.
    Inventors: Atsushi Hosokawa, Tomoya Inagaki, Hiromi Obata, Takayuki Imai, Takeshi Yamada
  • Seal for rotating shaft
    Patent number: 5860656
    Abstract: When a rotating shaft is at a standstill, a first sealing lip of a first sealing element comes elastically into contact with the shaft, thereby preventing a fluid leakage. Annular grooves are formed on the inner peripheral surface of a second sealing lip of a second sealing element so that a wide contact surface pressure can be obtained between each two adjacent grooves. Accordingly, a fluid leaked from the first sealing element is prevented from leaking to the low-pressure side by means of the second sealing lip. When the rotating shaft is rotating, moreover, the fluid from a fluid chamber is allowed to permeate the gap between the outer peripheral surface of the shaft and the inner peripheral surface of the first sealing lip. Thus, the inner peripheral surface of the first sealing lip is lubricated by means of the fluid, so that the first sealing lip can be prevented from wearing or heating.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: January 19, 1999
    Assignee: Mitsubishi Cable Industries, Ltd.
    Inventors: Hiromi Obata, Kenichi Takeda, Atsushi Hosokawa