Patents by Inventor Masaki Sakuraghi

Masaki Sakuraghi 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).

  • Mechanism for preventing idling strikes in power-driven striking tools
    Patent number: 5871059
    Abstract: The present invention realizes effective recoil reduction and idling strike prevention with a minimum constitution. In a tool holder (6), a thermal-resistant O-ring (22) is arranged between two steel washers (21,23) near the joint to the barrel (5). The O-ring (22) has a cross-sectional diameter of approximately 7 mm. The inner diameter of the O-ring (22) is made slightly greater than the diameter of a cylindrical portion (19b) formed at the rear of an intermediate element (19) and slightly smaller than the diameter of a flange (19a) formed at the rear of the cylindrical portion (19b). Likewise, the inner diameter is made slightly greater than the diameter of a recess (18b) of a striking member (18) formed in front thereof and slightly smaller than the diameter of a flange (18a) formed in front of the recess (18b).
    Type: Grant
    Filed: February 28, 1996
    Date of Patent: February 16, 1999
    Assignee: Makita Corporation
    Inventors: Mitsuyoshi Shibata, Masaki Sakuraghi, Yoshihiro Kasuya