Patents by Inventor Stephen Paul Stewart

Stephen Paul Stewart 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).

  • Irrigation pumpjack
    Patent number: 11851856
    Abstract: A pump comprises a frame and a docking platform connected to the frame. A motor is mounted to the docking platform and has a rotatable drive shaft extending therefrom. Roller bearings are mounted to cross beams attached to the frame. A vertically reciprocable slide bar driven is reciprocable through the at least one pair of roller bearings. A pump rod connector is attached to the slide bar and connectable to a pump rod extending into a well.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: December 26, 2023
    Assignee: Allied H2O, Inc.
    Inventors: Stephen Paul Stewart, Karl Edward Storm
  • DOUBLE-ACTION PUMP CYLINDER
    Publication number: 20210148356
    Abstract: A pump apparatus for pumping fluid from a well has a cylinder having upper and lower ends with inlet ports, a hollow pump rod defining a plurality of pump rod entry ports, a travelling two-way valve separating a cylinder interior into variable volume upper and lower chambers and first and second one-way valves mounted to the cylinder to seal the inlet ports.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 20, 2021
    Inventor: Stephen Paul Stewart
  • IRRIGATION PUMPJACK
    Publication number: 20210025148
    Abstract: A pump comprises a frame and a docking platform connected to the frame. A motor is mounted to the docking platform and has a rotatable drive shaft extending therefrom. Roller bearings are mounted to cross beams attached to the frame. A vertically reciprocable slide bar driven is reciprocable through the at least one pair of roller bearings. A pump rod connector is attached to the slide bar and connectable to a pump rod extending into a well.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventor: Stephen Paul Stewart
  • WATER PUMP
    Publication number: 20100183464
    Abstract: A water pump for delivering water from a well to the surface has a housing with a reciprocable plunger disposed therein. The housing is preferably comprised of PVC and tubulars which are connected to make up the plunger assembly are likewise PVC. A proximity bushing is disposed in the housing and the plunger assembly reciprocates in the housing through the proximity bushing. Reciprocation of the plunger assembly draws water into the housing and forces water from the housing into the plunger assembly to the surface.
    Type: Application
    Filed: January 21, 2010
    Publication date: July 22, 2010
    Inventor: Stephen Paul Stewart