Patents by Inventor Akihiro Yamakado

Akihiro Yamakado 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: 7690118
    Abstract: A bar steel cutting tool in which a fixed blade body and a rotary blade body that is capable of rotating around a first shaft, by operating a handle, are provided at the front end of a tool base for shearing bar steel with concave blades formed on outer peripheries of the fixed blade body and the rotary blade body. The handle is so constructed that the front end of a proximal portion of the handle thereof is supported by a second shaft at a position above the tool base and equipped with an elongated hole extending obliquely backwards from the second shaft. The rotary blade body has an arm portion extending backwards, and forms branch portions which nip both the right and left sides of the proximal portion of the handle at the rear end thereof.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: April 6, 2010
    Assignee: MCC Corporation
    Inventor: Akihiro Yamakado
  • Publication number: 20080022531
    Abstract: A bar steel cutting tool in which a fixed blade body and a rotary blade body that is capable of rotating around a first shaft, by operating a handle, are provided at the front end of a tool base for shearing bar steel with concave blades formed on outer peripheries of the fixed blade body and the rotary blade body. The handle is so constructed that the front end of a proximal portion of the handle thereof is supported by a second shaft at a position above the tool base and equipped with an elongated hole extending obliquely backwards from the second shaft. The rotary blade body has an arm portion extending backwards, and forms branch portions which nip both the right and left sides of the proximal portion of the handle at the rear end thereof.
    Type: Application
    Filed: October 16, 2006
    Publication date: January 31, 2008
    Applicant: MCC Corporation
    Inventor: Akihiro Yamakado
  • Patent number: 5927159
    Abstract: A ratchet wrench including a fixed jaw and a movable jaw attached to a body of the ratchet wrench and having V-shaped nut gripping portions opposing each other. The fixed jaw is pivoted to a forward end portion of the body and biased to rotate toward the movable jaw by a spring. An adjusting nut is provided rotatably about a longitudinal center axis of the body, and an adjusting screw rod is threaded into the adjusting nut so that it is movable back and forth along the longitudinal center axis of the body by rotating the adjusting nut in one direction or the other. The movable jaw is pivoted at a rear end portion thereof to the adjusting screw rod by a guide pin which is guided along a longitudinal slot provided in the body and, the movable jaw is biased to rotate toward the fixed jaw by a spring provided between the movable jaw and the adjusting screw rod.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: July 27, 1999
    Assignee: MCC Corporation
    Inventors: Takashi Yokoyama, Akihiro Yamakado