Patents by Inventor Yosio Ueno

Yosio Ueno 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: 5971364
    Abstract: In order that an operating lever for a hoist and traction apparatus is combined as a unit to ensure the smooth operations so as to provide an improved workability with achieving a downsizing, a driving member of the hoist and traction apparatus is provided with a non-circular configured part, while also the operating lever is provided with a ratchet wheel having a non-circular fitting hole engageable with the non-circular configured part to be non-rotatable relative thereto and a transmission tooth around its outer periphery; a feed pawl engageable with the ratchet wheel; and a switching mechanism for selectively switching the feed pawl to a normal engagement position, a reverse engagement position, and a free rotation position at which the feed pawl is not engaged with the ratchet wheel in either of the normal and reverse directions.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: October 26, 1999
    Assignee: Elephant Chain Block Co., Ltd.
    Inventors: Yosio Ueno, Eikiti Kobayasi
  • Patent number: D421172
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: February 22, 2000
    Assignee: Elephant Chain Block Company Limited
    Inventors: Toshimasa Mizutani, Yosio Ueno