Patents Assigned to Application Art Laboratories Co., Ltd.
  • Patent number: 4200852
    Abstract: An improved magnetic locking apparatus includes two elements which are magnetically attached, whereby the first magnetic supply element both magnetically attracts the second element and engages it for being coupled therewith. The construction of the two elements permits the elements to be securely attached against accidental external forces perpendicular to and parallel to the coupled surfaces of the elements.
    Type: Grant
    Filed: December 9, 1977
    Date of Patent: April 29, 1980
    Assignee: Application Art Laboratories Co., Ltd.
    Inventor: Yoshihiro Aoki
  • Patent number: 4021891
    Abstract: A magnetic lock closure used for a handbag or the like for closure comprising two separate parts at least one of which is formed as a female device in a permanent magnet of a cylindrical or any other shape having a hole or slit centrally thereof and its opposite ends magnetized in a different polarity, the female device including a piece of ferromagnetic material firmly provided at one end thereof and having a rod portion for insertion into the hole or slit such that the force of its magnetism is centered about the piece of ferromagnetic material which attracts the other part or male device formed of ferromagnetic material.
    Type: Grant
    Filed: April 18, 1974
    Date of Patent: May 10, 1977
    Assignee: Application Art Laboratories Co., Ltd.
    Inventor: Tamao Morita
  • Patent number: D274883
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: July 31, 1984
    Assignee: Application Art Laboratories Co., Ltd.
    Inventor: Yoshihiro Aoki
  • Patent number: D283484
    Type: Grant
    Filed: June 22, 1983
    Date of Patent: April 22, 1986
    Assignee: Application Art Laboratories Co., Ltd.
    Inventor: Yoshihiro Aoki
  • Patent number: D289137
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: April 7, 1987
    Assignee: Application Art Laboratories Co., Ltd.
    Inventor: Yoshihiro Aoki