Patents by Inventor Chiang S. Tseng

Chiang S. Tseng 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).

  • Anti-tamper locking mechanism
    Patent number: 5266923
    Abstract: An improved locking mechanism having a first electrode carried by at least one of the locking elements and a second electrode carried by the locking surface normally engageable by the locking elements when the locking mechanism is in its locked configuration, and an electrical tamper-detection circuit connected across the first and second electrodes and operative to generate an electrical signal response in the event that the first electrode is caused to engage the second electrode.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: November 30, 1993
    Inventor: Chiang S. Tseng
  • Alarm system
    Patent number: 5208579
    Abstract: An improved alarm system having a first electrode carried by at least one of the locking elements and a second electrode carried by the locking surface normally engageable by the locking elements when the locking mechanism is in its locked configuration, and an alarm system including an alarm signal generator and a plurality of event detection sensors, one of which is formed by the first and second locking elements, the sensors being coupled to the signal generator such that an event detected by any sensor causes the generator to develop an alarm signal.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: May 4, 1993
    Inventor: Chiang S. Tseng