Patents Assigned to Kabushiki Kaisha Yamazaki active
  • Patent number: 9212685
    Abstract: It is an object to provide a locking bolt, which is capable of tightly fixing a member or the like at an extremely high degree of firmness without being loosened even when vibrations are repeatedly applied thereto, and is manufactured in an extremely facilitated manner. The locking bolt includes: a shank section (1) threaded on an outer circumference thereof; and a head section (2) provided at one end of the shank section (1). The head section (2) includes: a main body portion (201) having a hexagonal cross-sectional shape; and a cylindrical skirt portion (202) provided continuously with the main body portion (201) and formed so as to be spaced radially outward from the main body portion (201) in an expanding manner along a concave surface using a catenary curve surface.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: December 15, 2015
    Assignee: KABUSHIKI KAISHA YAMAZAKI ACTIVE
    Inventors: Tadayoshi Yamazaki, Kazuki Yamazaki
  • Patent number: 9212682
    Abstract: A fastening member for appropriately ensuring strength of a peripheral edge part of a tapered-ring-body-shaped part and appropriately reducing external dimensions. A bolt, a nut or a washer employed for fastening a body is fastened by a screw tightening action The fastening member has a tapered-ring-body-shaped part formed into a ring body shape with a gradually increasing diameter toward a seating surface formed into a circular-planar-band-ring-shape concentric with an axis so as to press against the body being fastened. The taper angle of the tapered-ring-body-shaped part is an acute angle, and an upright surface is formed on an outer circumferential surface of the tapered-ring-body-shaped part and vertically erected from the body being fastened.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: December 15, 2015
    Assignee: Kabushiki Kaisha Yamazaki Active
    Inventor: Tadayoshi Yamazaki
  • Publication number: 20140308091
    Abstract: It is an object to provide a locking bolt, which is capable of tightly fixing a member or the like at an extremely high degree of firmness without being loosened even when vibrations are repeatedly applied thereto, and is manufactured in an extremely facilitated manner. The locking bolt includes: a shank section (1) threaded on an outer circumference thereof; and a head section (2) provided at one end of the shank section (1). The head section (2) includes: a main body portion (201) having a hexagonal cross-sectional shape; and a cylindrical skirt portion (202) provided continuously with the main body portion (201) and formed so as to be spaced radially outward from the main body portion (201) in an expanding manner along a concave surface using a catenary curve surface.
    Type: Application
    Filed: June 5, 2012
    Publication date: October 16, 2014
    Applicant: KABUSHIKI KAISHA YAMAZAKI ACTIVE
    Inventors: Tadayoshi Yamazaki, Kazuki Yamazaki
  • Patent number: D660691
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: May 29, 2012
    Assignee: Kabushiki Kaisha Yamazaki active
    Inventor: Tadayoshi Yamazaki
  • Nut
    Patent number: D679988
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 16, 2013
    Assignee: Kabushiki Kaisha Yamazaki active
    Inventor: Tadayoshi Yamazaki
  • Patent number: D689762
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: September 17, 2013
    Assignee: Kabushiki Kaisha Yamazaki Active
    Inventors: Tadayoshi Yamazaki, Kazuki Yamazaki
  • Patent number: D710191
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: August 5, 2014
    Assignee: Kabushiki Kaisha Yamazaki active
    Inventor: Tadayoshi Yamazaki
  • Patent number: D722489
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: February 17, 2015
    Assignee: Kabushiki Kaisha Yamazaki Active
    Inventor: Tadayoshi Yamazaki