Patents Assigned to Mitsuboshi Belting
  • Compact coil spring tensioner
    Patent number: 5195932
    Abstract: An apparatus is provided for tensioning a drive belt, which apparatus consists of tensioner arm having an idler pulley thereon for engagement with the surface of a drive belt, structure for mounting the tensioner arm to a support for pivoting movement in first and second opposite directions relative to the support, and a torsion coil spring formed of wire and acting between the mounting structure and tensioner arm for biasing the tensioner arm in one of the first and second directions. The wire has a non-circular cross section.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: March 23, 1993
    Assignee: Mitsuboshi Belting
    Inventors: Hideo Hirai, Masakatsu Ando, Yasuhiro Hashimoto, Naoki Fujimoto, Norikazu Tanaka, Susumu Yamakawa