Patents by Inventor LEWIS T. SMITH

LEWIS T. SMITH 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).

  • Low profile variable frequency controller with cooling and process
    Patent number: 9819159
    Abstract: A housing for a variable frequency drive and its transformer, which housing has two compartments, one each for a VFD and transformer. The housing is box shaped with enclosures attached to the rear wall of each compartment, which enclosures communicate through openings in the compartments to their interiors. The VFD compartment has an exterior side wall communicating enclosure. Cooling components are disposed in each enclosure. Each compartment has inner and outer doors. The inner door of the VFD compartment has a recessed cabinet with VFD controls therein and on its door. The inner door of the transformer compartment has a grill, while its outer door has both interior and exterior louvers. The transformer compartment also holds the main circuit breaker.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: November 14, 2017
    Inventors: Lewis T. Smith, Rohan Kumar, Gnia Vang
  • Low profile variable frequency controller with cooling and process
    Publication number: 20170117687
    Abstract: A housing for a variable frequency drive and its transformer, which housing has two compartments, one each for a VFD and transformer. The housing is box shaped with enclosures attached to the rear wall of each compartment, which enclosures communicate through openings in the compartments to their interiors. The VFD compartment has an exterior side wall communicating enclosure. Cooling components are disposed in each enclosure. Each compartment has inner and outer doors. The inner door of the VFD compartment has a recessed cabinet with VFD controls therein and on its door. The inner door of the transformer compartment has a grill, while its outer door has both interior and exterior louvers. The transformer compartment also holds the main circuit breaker.
    Type: Application
    Filed: October 26, 2015
    Publication date: April 27, 2017
    Applicant: TESCO CONTROLS, INC.
    Inventors: LEWIS T. SMITH, ROHAN KUMAR, GNIA VANG