Patents by Inventor Hershel Earl Wright

Hershel Earl Wright 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).

  • Foam dispenser
    Patent number: 4022351
    Abstract: This foam dispenser includes a flexible container for foamable liquid, having a discharge opening at the upper end. A porous member is housed in the discharge opening and a conduit communicating with said porous member extends downwardly into the interior of the container. A flow directing valve system within the conduit determines the path of air and liquid through the conduit and the porous member during manual pressurization and depressurization of the container. The foamable liquid and air are isolated from each other by a bag member disposed within the container.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: May 10, 1977
    Inventor: Hershel Earl Wright
  • Foam dispensing device
    Patent number: 4018364
    Abstract: This foam dispensing device includes a flexible container for foamable liquid, having a discharge opening at one end. A foam producing assembly is housed within the container, the assembly including a self-supporting porous member of rigid material held within the neck of the container and a tubular member of non-porous material having one end extending into the porous member and the other end extending into the interior of the container. Fluid mixing within the porous member is facilitated by flow restriction, and an air return facilitates rapid container recovery.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: April 19, 1977
    Inventor: Hershel Earl Wright
  • Serum skimmer and filter separation unit
    Patent number: 3954614
    Abstract: A plunger assembly is longitudinally movable within an outer tube having a lower closed end. The plunger assembly includes a plunger tube and a resilient piston-valve plug seated in the inner end thereof. The piston-valve plug has frictional sealing engagement with the inner walls of the outer tube, has a slit therethrough for permitting the flow of clear liquid from the lower end of the outer tube into the plunger tube when the plunger tube is moved inwardly of the outer tube, and has a port therethrough for permitting the return flow of air into the space in the outer tube below the plug when the plunger tube is moved outwardly of the outer tube. A filter element is seated in the plug to filter liquid prior to flow through the slit.
    Type: Grant
    Filed: December 4, 1973
    Date of Patent: May 4, 1976
    Assignee: Glasrock Products, Inc.
    Inventor: Hershel Earl Wright
  • Foam dispensing device
    Patent number: 3937364
    Abstract: A foam dispensing device having a foaming member and valve system in a flexible container designed to produce a quality foam when the container is pressurized regardless of the position of the container.
    Type: Grant
    Filed: April 3, 1975
    Date of Patent: February 10, 1976
    Inventor: Hershel Earl Wright