Patents by Inventor Hiroyoshi Ochiai

Hiroyoshi Ochiai 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).

  • Endless chain for a chain saw
    Patent number: 4203215
    Abstract: An endless chain of this invention for a chain saw is provided with cutter links of a unique shape and construction. Such cutter link has an inclined U-shaped and substantially consists of a saw adjusting portion and a saw tooth portion. The saw tooth portion further has a hard metal tip brazed at the top thereof, wherein the hard metal tip forms a saw set. Due to such construction, the saw tooth portion which is provided with such hard metal tip can smoothly saw off lumber while the saw adjusting portion can completely remove the sawn-off lumber chips. The saw adjusting portion also provides minimum vibration of the chain saw.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: May 20, 1980
    Assignee: Hideaki Taniguchi
    Inventors: Hiroyoshi Ochiai, Masao Nakamoto