Patents by Inventor Dan E. Holman

Dan E. Holman 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).

  • Piston assembly for trigger sprayer
    Patent number: 5862950
    Abstract: The trigger sprayer comprises a trigger sprayer body having a cylinder therein, a trigger movably mounted to the trigger sprayer body, and the improvement of a piston assembly including a piston body having an unobstructed annular space for receiving an O-ring and an O-ring mounted in the unobstructed annular space for sealing between the piston body and an inner wall in the cylinder in the trigger sprayer body.Preferably, the piston body is formed from two parts which are pressed together to form the unobstructed annular space between the parts for receiving the O-ring.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: January 26, 1999
    Assignee: AFA Products, Inc.
    Inventor: Dan E. Holman