Patents by Inventor Steven A. Meyer

Steven A. Meyer 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).

  • Dual diaphragm pump assembly for a sanitation system
    Patent number: 8529223
    Abstract: A pump assembly includes a housing defining a working chamber, a water pump chamber and a waste pump chamber. A first diaphragm separates the water pump chamber and the working chamber. A second diaphragm separates the waste pump chamber and the working chamber. A common driver member interconnects the first diaphragm and the second diaphragm. Movement of the driven member to a first position creates a positive pressure in the water pump chamber and a negative pressure in the waste pump chamber. Movement of the driven member to a second position creates a negative pressure in the water pump chamber and a positive pressure in the waste pump chamber.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: September 10, 2013
    Assignee: Thetford Corporation
    Inventors: William R. Cohoon, George Grech, Steven A. Meyer
  • DUAL DIAPHRAGM PUMP ASSEMBLY FOR A SANITATION SYSTEM
    Publication number: 20090092505
    Abstract: A pump assembly includes a housing defining a working chamber, a water pump chamber and a waste pump chamber. A first diaphragm separates the water pump chamber and the working chamber. A second diaphragm separates the waste pump chamber and the working chamber. A common driver member interconnects the first diaphragm and the second diaphragm. Movement of the driven member to a first position creates a positive pressure in the water pump chamber and a negative pressure in the waste pump chamber. Movement of the driven member to a second position creates a negative pressure in the water pump chamber and a positive pressure in the waste pump chamber.
    Type: Application
    Filed: October 3, 2008
    Publication date: April 9, 2009
    Applicant: THETFORD CORPORATION, A DELAWARE CORPORATION
    Inventors: William R. Cohoon, George Grech, Steven A. Meyer