Patents by Inventor Charles W. Keith, Jr.

Charles W. Keith, Jr. 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).

  • Nasogastric tube antireflux valve
    Patent number: 4735607
    Abstract: A valve to prevent gastric reflux or leakage through the vent lumen of a double-lumened nasogastric tube. The valve allows the passage of air into the vent lumen when atmospheric pressure exceeds stomach pressure. When stomach pressure exceeds atmospheric pressure the valve prevents flow of fluids through the tube.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: April 5, 1988
    Assignee: H. P. Bruemmer Corp.
    Inventor: Charles W. Keith, Jr.
  • Multi-position wall spacer
    Patent number: 4391007
    Abstract: An adjustable wall-spacer is employed to position an adjustable hospital bed normally from a wall and prevent contact of the headboard with the wall when the bed is moved into raised or tilted positions.
    Type: Grant
    Filed: January 5, 1981
    Date of Patent: July 5, 1983
    Assignee: B-W Health Products, Inc.
    Inventors: Larry D. Mitchell, Charles W. Keith, Jr.