Patents by Inventor David Boyd Fisher

David Boyd Fisher 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).

  • Patent number: 9982942
    Abstract: A hand dryer comprising a universal brushed AC blower vacuum motor, one or more resistive circuits of a heating element, and a universal voltage controller that selectively alternates the configuration and the electrical connection of the resistive circuits, in response to a detected input voltage is disclosed.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: May 29, 2018
    Assignee: World Dryer Corporation
    Inventor: David Boyd Fisher
  • Publication number: 20150226483
    Abstract: A hand dryer comprising a universal brushed AC blower vacuum motor, one or more resistive circuits of a heating element, and a universal voltage controller that selectively alternates the configuration and the electrical connection of the resistive circuits, in response to a detected input voltage is disclosed.
    Type: Application
    Filed: February 4, 2015
    Publication date: August 13, 2015
    Inventor: David Boyd Fisher
  • Publication number: 20120246963
    Abstract: An apparatus such as a hand dryer is configured to expel air in the form of a heated flowstream and an unheated flowstream. The heated flowstream results from active heating, such as would occur when the apparatus exposes the air to a heating element. The heating element heats the air to a temperature that is greater than the air in the unheated flowstream. The apparatus can direct each of the heated flowstream and the unheated flowstream to an exit plane, which defines a first side on which the apparatus prevents the heated flowstream from mixing with the unheated flowstream. The exit plane also defines a second side on which a target can reside. The heated flowstream can mix with the unheated flowstream on the second side, wherein mixing can occur when the heated flowstream and the unheated flowstream impinge on the target.
    Type: Application
    Filed: April 4, 2011
    Publication date: October 4, 2012
    Applicant: World Dryer Corporation
    Inventor: David Boyd Fisher