Patents by Inventor Jui-Chang Lin

Jui-Chang Lin 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).

  • Dead bolt assembly for tubular door locks
    Patent number: 5257838
    Abstract: A door lock includes a dead bolt slidably received in a cylinder and including a pair of extensions extended outward beyond the cylinder, a pair of plates fixed to the cylinder, an oblong hole formed in each of the plates, an actuating wheel slidably engaged in the oblong holes of the plates and including a pair of teeth for engagement with the protrusions of the extensions when the actuating wheel rotates. A resilient member is fixed to one of the plates for positioning the actuating wheel.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: November 2, 1993
    Inventor: Jui-Chang Lin
  • Auxiliary lock with an anti-breakage device
    Patent number: 5216910
    Abstract: An auxiliary lock with an anti-breakage device having a seat combined with a base and an inner ring covered with an outer ring, a latch unit being deposited in the housing and having a recessed opening in an outer end for a reinforcing plate to fit therein and then a face plate sealing up the reinforcing plate to protect the latch unit from breakage by illegal attempt.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: June 8, 1993
    Inventor: Jui-Chang Lin
  • Auxiliary lock
    Patent number: 5176416
    Abstract: An auxiliary lock has an actuating plate provided with an arm to push two teeth in a pulling plate to extend out or retract in a dead bolt. The actuating plate has two straight sides forming a 90.degree. to selectively contact the middle portion of a plate spring, which has one moveable and a fixed end.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: January 5, 1993
    Inventor: Jui-Chang Lin
  • Manually codeable cards for card readers
    Patent number: 4837427
    Abstract: A kind of manually codeable card for card readers composed of an upper and a lower sheet of transparent material glued together, the lower sheet printed with black ink all over except a plurality of transparent circles which can be sticked on to become opaque with black circles from a paper with transposable black circles or round opaque stickers. The coded number of the card is represented by the different combination of transparent and opaque circles.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: June 6, 1989
    Assignees: Jeun-Keun Lee, In-Jyh Liou
    Inventor: Jui-Chang Lin
  • Structure for controlling the dead bolt used in an electronic lock
    Patent number: 4820330
    Abstract: A kind of controlling structure for an electronic lock. The condition that a control plate in an electronic lock is adjusted to the position of "closed" or to that of "open" enables the outside knob either to turn idle or to turn only one time to cause the dead bolt tip of the dead bolt pulled back to unlock the lock.
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: April 11, 1989
    Assignees: Jeun-Kuen Lee, In-Jyh Liou
    Inventor: Jui-Chang Lin