Patents by Inventor Ralph C. Collins

Ralph C. Collins 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).

  • Battery charger for aircraft emergency egress batteries
    Patent number: 7977922
    Abstract: A battery charger includes one or more channels for independently charging one or more batteries at different current levels. The battery charger also includes multiple modes for each channel for charging a battery with a continuous current or a pulse current. The battery charger supplies charging current by holding the charging voltage at a set value.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: July 12, 2011
    Inventors: Ralph C. Collins, Greg N. Pierce
  • Battery charger for aircraft emergency egress batteries
    Patent number: 7679335
    Abstract: A battery charger includes one or more channels for independently charging one or more batteries at different current levels. The battery charger also includes multiple modes for each channel for charging a battery with a continuous current or a pulse current. The battery charger supplies charging current by holding the voltage at a set value.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: March 16, 2010
    Inventors: Ralph C. Collins, Greg N. Pierce
  • Battery housing and battery analyzer
    Patent number: 7285959
    Abstract: An electrical source analyzer is claimed and disclosed with a circuit for a quick test of voltages using LEDs to indicate the voltage range, a circuit for measuring voltage using a meter with a display, a circuit for measuring current, as applied across a load with a display, and a circuit to indicate reverse polarity of the electrical source.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: October 23, 2007
    Inventors: Ralph C. Collins, Greg N. Pierce