Patents by Inventor Michael D. Haufler

Michael D. Haufler 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: 5555934
    Abstract: The apparatus is a pumping system for multiple wells which uses a single circulating pump and two or more venturi jet pumps, at least one jet pump for each well. The circulating pump furnishes feed water to the several jet pumps, with the vacuum line of each jet pump installed into a different well. Automatic level control within the well is furnished because when the liquid level falls, the jet pump vacuum line within the low level well draws air, and there is no effect on the pumping action of the jet pumps of other wells. Thus, if the level of liquid in a well drops, that pump simply pumps air and will resume pumping the liquid when the liquid once again covers the well pipe intake.
    Type: Grant
    Filed: June 12, 1995
    Date of Patent: September 17, 1996
    Assignee: R. E. Wright Environmental, Inc.
    Inventor: Michael D. Haufler