Patents by Inventor W. T. David Abbott

W. T. David Abbott 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).

  • System for cleaning components of a water retaining device, associated water retaining device, and water propulsion device for use therein
    Patent number: 7182090
    Abstract: A system for cleaning components of one or more water retaining devices (e.g., tubs) includes two pumps, a tank, one or more supply valves, a water retaining device, and control circuitry. The pumps control the flow of a concentrated cleaning agent and water to the tank. The tank stores the cleaning agent and water as a diluted cleaning solution at a desired pressure, and selectively dispenses the diluted solution to the tub(s) through appropriate piping. The supply valve(s) controls the flow of cleaning solution to components of the tub. The tub includes a water propulsion device (e.g., jet) configured to facilitate efficient cleaning of the propulsion device's various surfaces. The control circuitry controls the operation of the pumps and preferably the supply valve(s) in accordance with a predetermined cleaning procedure. The system may optionally include an outflow device to prevent premature evacuation of the cleaning solution from the tub's components.
    Type: Grant
    Filed: June 21, 2004
    Date of Patent: February 27, 2007
    Inventor: W. T. David Abbott
  • Self draining valve
    Patent number: 6688577
    Abstract: A self-draining, valve for fluid flow control. Upon removal of fluid supply pressure from the valve, the valve automatically reverts to a partially open state allowing fluid in the valve to drain. The disclosed valve is particularly useful in applications where draining of fluids with bio-matter or other contaminants is desired after removal of supply pressure in order to reduce contamination buildup and/or permit thorough cleaning.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: February 10, 2004
    Inventor: W. T. David Abbott
  • Self draining valve
    Publication number: 20030141471
    Abstract: A self-draining, valve for fluid flow control. Upon removal of fluid supply pressure from the valve, the valve automatically reverts to a partially open state allowing fluid in the valve to drain. The disclosed valve is particularly useful in applications where draining of fluids with bio-matter or other contaminants is desired after removal of supply pressure in order to reduce contamination buildup and/or permit thorough cleaning.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 31, 2003
    Inventor: W.T. David Abbott