Patents Examined by M. H. Pascall
  • Electrically heated seat resistive heating element energization system
    Patent number: 4926025
    Abstract: A control for a resistive heating element embedded within a motor vehicle seat. A transistor is biased into conduction to energize the heating element when the temperature of the element is below a threshold that is adjusted by the vehicle operator. A fault sensing system monitors operations of the control and de-energizes the heating element if a fault is sensed.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: May 15, 1990
    Assignee: Nartron Corporation
    Inventor: Daniel D. Wilhelm
  • Security system and lock
    Patent number: 4820910
    Abstract: A code system comprising a temperature-resistance conversion element the change of electric resistance value of which describes a hysteresis loop with respect to a temperature change; a means for changing the temperature of said temperature-resistance conversion element; a means for detecting the change of the electric resistance of said conversion element; and a time counting means of counting the actuation time of said temperature changing means. A hard lock device for use in the code system is also disclosed.
    Type: Grant
    Filed: August 14, 1986
    Date of Patent: April 11, 1989
    Assignees: Daicel Chemical Industries, Ltd., Yakichi Higo
    Inventors: Yakichi Higo, Hiroshi Morimoto