Patents by Inventor Do-Hun Ham

Do-Hun Ham 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).

  • Handcuffs for preventing double-locking
    Patent number: 7424811
    Abstract: To handcuffs for preventing double-locking is added a structure or a member in which a stopper is in resilient contact with and is locked to bodies of the stationary hoops, so that the movement of the stopper is basically prevented even if shocks are transmitted from sides of the bodies of the stationary hoops while the handcuffs are carried, and thus the ability to move a detent thereof is secured. Thereby, a swivel hoop can be rapidly rotated under emergency circumstances while the handcuffs are carried, and can be meshed with the ratchet of a detent installed between the bodies of the stationary hoops.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 16, 2008
    Assignee: MR Infraauto Co., Ltd.
    Inventors: Sang-Sik Ham, Do-Hun Ham, Ju-Taek Park
  • Handcuffs for preventing double-locking
    Publication number: 20080148788
    Abstract: To handcuffs for preventing double-locking is added a structure or a member in which a stopper is in resilient contact with and is locked to bodies of the stationary hoops, so that the movement of the stopper is basically prevented even if shocks are transmitted from sides of the bodies of the stationary hoops while the handcuffs are carried, and thus the ability to move a detent thereof is secured. Thereby, a swivel hoop can be rapidly rotated under emergency circumstances while the handcuffs are carried, and can be meshed with the ratchet of a detent installed between the bodies of the stationary hoops.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 26, 2008
    Applicant: MR InfraAuto Co., Ltd.
    Inventors: Sang-Sik Ham, Do-Hun Ham, Ju-Taek Park