Patents by Inventor John David Lowman

John David Lowman 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).

  • Drain plug
    Patent number: 8186921
    Abstract: Disclosed is a drain plug for an enclosure that contains a female-threaded opening. The drain plug contains a male-threaded portion and a head portion. The head portion contains a drive structure, an annular groove of substantially rectangular cross section, and a washer of substantially rectangular cross section in the groove. An outer wall of the annular groove is positioned to contact the enclosure when secured to the female-threaded opening.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: May 29, 2012
    Assignee: General Plug & Manufacturing Company
    Inventor: John David Lowman
  • DRAIN PLUG
    Publication number: 20080135335
    Abstract: Disclosed is a drain plug for an enclosure that contains a female-threaded opening. The drain plug contains a male-threaded portion and a head portion. The head portion contains a drive structure, an annular groove of substantially rectangular cross section, and a washer of substantially rectangular cross section in the groove. An outer wall of the annular groove is positioned to contact the enclosure when secured to the female-threaded opening.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 12, 2008
    Applicant: GENERAL PLUG & MANUFACTURING COMPANY
    Inventor: John David Lowman