Patents Assigned to Olfa Kabushiki Kaisha
  • Step-slide type cutter knife with automatic lock mechanism
    Patent number: 5269063
    Abstract: A cutter knife for locking a slider by the engagement between a leaf spring member and an engaging notch of a cutter main body. The leaf spring member has a flat spring section; and a U-shaped locking section projecting therefrom at a right angle therewith. A pair of flat portions of the locking section engage the engaging surfaces of the engaging notch. Consequently, the slider is locked. The operating member moves with respect to a slider main body, thus pressing the locking section downward. As a result, the slider is unlocked.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: December 14, 1993
    Assignee: Olfa Kabushiki Kaisha
    Inventor: Shoji Okada
  • Retractable knife
    Patent number: D347563
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: June 7, 1994
    Assignee: Olfa Kabushiki Kaisha
    Inventor: Shoji Okada
  • Retractable knife
    Patent number: D386959
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: December 2, 1997
    Assignee: Olfa Kabushiki Kaisha
    Inventor: Shoji Okada
  • Retractable knife
    Patent number: D392173
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: March 17, 1998
    Assignee: Olfa Kabushiki Kaisha
    Inventor: Shoji Okada
  • Retractable knife
    Patent number: D398829
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: September 29, 1998
    Assignee: Olfa Kabushiki Kaisha
    Inventor: Shoji Okada
  • Retractable knife
    Patent number: D399114
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: October 6, 1998
    Assignee: Olfa Kabushiki Kaisha
    Inventor: Shoji Okada