Patents by Inventor Mitsuo Kama

Mitsuo Kama 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: 7824109
    Abstract: An optical connector comprising: first and second movable members 7, 8 held on an optical connector body 6 to be axially movable in a longitudinal direction; locking means for locking the first and second movable members when the first movable member is located at a predetermined locking position in a tip part of the optical connector body, and integrally moving the first and second movable members; and unlocking means formed in the optical connector body 6, and including a locking acting portion which acts on the locking means when the first movable member is located rearwardly of a predetermined unlocking position in a rear part of the optical connector body, to unlock the first and second movable members, and which locks the first and second movable members when the first movable member is located forwardly of the unlocking position, and a second movable member hooking portion 10 for inhibiting rearward movement of the second movable member after the first and second movable members are unlocked, and where
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: November 2, 2010
    Assignees: Nippon Telegraph and Telephone Corporation, NTT Advanced Technology Corporation
    Inventors: Hiroshi Tanaka, Mitsuo Kama, Hiroshi Aoyama, Yasuo Oda, Ryo Nagase, Hideki Ishihara, Fumihiro Ashiya, Shinichi Iwano
  • Publication number: 20080273842
    Abstract: An optical connector comprising: first and second movable members 7, 8 held on an optical connector body 6 to be axially movable in a longitudinal direction; locking means for locking the first and second movable members when the first movable member is located at a predetermined locking position in a tip part of the optical connector body, and integrally moving the first and second movable members; and unlocking means formed in the optical connector body 6, and including a locking acting portion which acts on the locking means when the first movable member is located rearwardly of a predetermined unlocking position in a rear part of the optical connector body, to unlock the first and second movable members, and which locks the first and second movable members when the first movable member is located forwardly of the unlocking position, and a second movable member hooking portion 10 for inhibiting rearward movement of the second movable member after the first and second movable members are unlocked, and where
    Type: Application
    Filed: August 30, 2006
    Publication date: November 6, 2008
    Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT ADVANCED TECHNOLOGY CORPORATION
    Inventors: Hiroshi Tanaka, Mitsuo Kama, Hiroshi Aoyama, Yasuo Oda, Ryo Nagase, Hideki Ishihara, Fumihiro Ashiya, Shinichi Iwano
  • Patent number: 6021246
    Abstract: A closure for a cable connection capable of facilitating access to fiber connection sections, ensuring simplified management, assembling and disassembling, and exhibiting increased sealing and resealing characteristics. A base member is formed at a portion of an outer surface thereof positioned around each of cable insertion holes with a cylindrical pocket, in which a cable bush made of a rubber-like elastic material and formed with a through-hole communicating with a respective one of the cable insertion holes is fittedly arranged. A cable seal cap which has a raised surface for abutting against the cable bush is releasably fitted in the cylindrical pocket to bring the cable bush into elastic contact with a cable.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: February 1, 2000
    Assignees: Japan Recom Ltd, Nippon Telegraph, Telephone Corporation
    Inventors: Koji Koshiyama, Kinji Mineshima, Tatsuro Oikawa, Tetsuya Hoshijima, Toshiyuki Ishikawa, Mitsuo Kama, Yoshiyuki Yoshii
  • Patent number: 5850499
    Abstract: A closure for cable connection capable of positively maintaining fastening between joint edges of a sleeve, exhibiting increased safety and airtightness, and substantially improving workability in assembling thereof. A sleeve is formed so as to be split into two parts in an axial direction thereof. The two parts of the sleeve are connected on one side thereof to each other by means of hinge sections and formed on the other side thereof with joint edges. One of the joint edges is mounted thereon with fasteners each provided with a holding hole and the other joint edge is provided with holding projections each releasably engaged with a corresponding one of the holding holes. Each fastener and the sleeve are provided with a holding hole and an additional holding projection for locking the fastener to the sleeve in a manner to be opposite to each other, respectively.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: December 15, 1998
    Assignees: Japan Recom Ltd., Nippon Telegraph and Telephone Corporation
    Inventors: Daijiro Sasaki, Kinji Mineshima, Yasunari Tsuruta, Tadashi Hattori, Yoshiyuki Yoshii, Mitsuo Kama, Tetsuya Hoshijima, Toshiyuki Ishikawa