Patents by Inventor Lap-Yan Heung

Lap-Yan Heung 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).

  • Circuit module fan assembly
    Patent number: 5287009
    Abstract: An electronic circuit module fan assembly is disclosed including a circuit module housing, circuit modules, and a fan module. The fan module has a fan unit for cooling the circuit modules. The fan module can be mounted in the housing interchangeably with the circuit modules. The fan module has time delay circuitry for delaying the time when the fan module is powered up until after the initial power surge of the electronic system. The fan module also has noise filter circuitry. A fan module is disclosed wherein the fan unit is slidably attached to the fan module to allow the fan to be placed in different positions for cooling purposes. The fan module can be constructed so that the fan unit is interchangeable with a panel having circuitry.
    Type: Grant
    Filed: February 26, 1993
    Date of Patent: February 15, 1994
    Inventor: Lap-Yan Heung
  • Circuit module fan assembly
    Patent number: 5191230
    Abstract: An electronic circuit module fan assembly is disclosed including a circuit module housing, circuit modules, and a fan module. The fan module has a fan unit for cooling the circuit modules. The fan module can be mounted in the housing interchangeably with the circuit modules. The fan module has time delay circuitry for delaying the time when the fan module is powered up until after the initial power surge of the electronic system. The fan module also has noise filter circuitry. A fan module is disclosed wherein the fan unit is slidably attached to the fan module to allow the fan to be placed in different positions for cooling purposes. The fan module can be constructed so that the fan unit is interchangeable with a panel having circuitry.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: March 2, 1993
    Inventor: Lap-Yan Heung
  • Circuit module fan assembly
    Patent number: 5079438
    Abstract: An electronic circuit module fan assembly is disclosed including a circuit module housing, circuit modules, and a fan module. The fan module has a fan unit for cooling the circuit modules. The fan module can be mounted in the housing interchangeably with the circuit modules. The fan module has time delay circuitry for delaying the time when the fan module is powered up until after the intiial power surge of the electronic system. The fan module also has noise filter circuitry. A fan module is disclosed wherein the fan unit is slidably attached to the fan module to allow the fan to be placed in different positions for cooling purposes. The fan module can be constructed so that the fan unit is interchangeable with a panel having circuitry.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: January 7, 1992
    Inventor: Lap-Yan Heung