Patents by Inventor Ichiro Kanesaka

Ichiro Kanesaka 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).

  • Ignition system with resistance value difference fire extinction detection circuit
    Patent number: 5804796
    Abstract: In an ignition system for sensing a change in a resistance value during a combustion of a heating resistive element and detecting a fire extinction, a resistance value of the heating resistive element is sensed by a resistance value detecting circuit at a predetermined time interval set by an interval setting circuit, and a difference between the resistance value and that sensed before an elapse of the predetermined period of time is calculated by a resistance value calculating circuit. A comparing circuit compares a difference in the resistance values with a reference value stored in a reference value memory, and a extinction detecting circuit detects a fire extinction when the difference calculated by the resistance value difference calculating circuit had exceeded the reference value. Accordingly, there is attained an ignition system which reasonably determines a fire extinction without an additional complex structure.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: September 8, 1998
    Inventor: Ichiro Kanesaka
  • Gas heater
    Patent number: 5240406
    Abstract: In a gas heater, a ceramic heater is used to ignite gas supplied to a gas burner. The ceramic heater is disposed in flame while the gas is burnt such that a change in the resistance value of the ceramic heater is sensed by a resistance value sensor to detect a flame extinction. Since the resistance value is varied between ceramic heaters, the deviation of the resistance value is compensated for depending on a reference value at a reference temperature of the ceramic heater so as to detect the flame extinction.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: August 31, 1993
    Inventor: Ichiro Kanesaka
  • Warming apparatus
    Patent number: 4458663
    Abstract: A warming apparatus uses a gas burner which comprises a burner body and a plurality of tubular flame nozzles projecting radially from the burner body. The tubular nozzles have an internal diametr which ranges from about 1 mm to about 4 mm, and the projecting length of the tubular nozzles which extends from the burner body is within a range of from about 10 mm to about 40 mm. The nozzles have axially directed nozzle openings. The warming apparatus comprises the gas burner in combination with first and second radiators and a heat interception plate positioned between the burner body and the radiators.
    Type: Grant
    Filed: October 28, 1981
    Date of Patent: July 10, 1984
    Inventor: Ichiro Kanesaka