Patents by Inventor Edward R. Stevens, Jr.

Edward R. Stevens, 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).

  • Patent number: 6053370
    Abstract: A dispenser for dispensing charges of fluid from a container and applicable to a mouth of the container with the container in an inverted position and the mouth down. The dispenser includes a body formed of resilient elastomeric material having a hollow annular upper part having a flexible, resilient annular wall and an upper and lower end and constituting a bellows which is downwardly expansible and upwardly contractible by flexing of the annular wall. The body has integral with the bellows a lower part having a discharge port. The dispenser includes a first check valve at an entry end of the bellows operable for flow of fluid into the bellows on expansion thereof and operable to block flow of fluid from the pump member out of its upper end on contraction thereof. A second valve is operable for dispensing the charge of fluid from the bellows down into the outlet nozzle on contraction of the bellows and to block flow out of the bellows outlet on expansion of the bellows.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: April 25, 2000
    Assignee: Koller Enterprises, Inc.
    Inventors: Gregory S. Ludbrook, Edward R. Stevens, Jr.