Patents by Inventor Erik K. Worm

Erik K. Worm 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).

  • Pressure washer with duty cycle temperature controller and method
    Patent number: 6435424
    Abstract: A pressure washer for use by an operator. A heat exchanger has a water input adapted to connect to a water source and has a water output providing discharge water. A water pump supples water to the heat. A temperature selector is responsive to operator. A burner in thermodynamic communication with the heat exchanger applies heat to the heat exchanger and the water in the heat exchanger. The burner has a fuel input connecting a fuel source to the burner. A fuel switch selectively allows fuel from the fuel source to be supplied to the combustion chamber via the fuel input. A duty cycle timer has a uniform duty cycle and is energized when water flows through the heat exchanger. The duty cycle timer is responsive to the temperature selection switch to vary its duty cycle as a function of the operator input provided to the temperature selector.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: August 20, 2002
    Assignee: Alto U.S. Inc.
    Inventors: Stephen J. Pauley, Calvin W. Krefft, Erik K. Worm