Patents by Inventor Robert D. Loeb

Robert D. Loeb 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: 6293294
    Abstract: A fluid mixing device has an inlet passageway for connection to a primary fluid supply, an outlet passageway; and at least two separate venturi passageways each connected between the inlet and outlet passageways. Each venturi passageway has a throat portion, a first venturi inlet connected to the throat portion of the first venturi passageway and a second venturi inlet connected to the throat portion of the second venturi passageway. The first and second venturi inlets are connected to supplies of two different secondary fluids for mixing into the primary fluid, a first one of the secondary fluids being of lower viscosity than the second. The outlet passageway is spaced a predetermined distance downstream of the venturi inlets to prevent substantial backflow of the first secondary fluid mixture into the second venturi passageway prior to mixing together of the two streams in the outlet passageway.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: September 25, 2001
    Assignee: Hydrosurge, Inc.
    Inventors: Robert D. Loeb, David M. Giuntoli, Hugh O. Williams
  • Patent number: 4078625
    Abstract: An apparatus having a spring biased shaft provides vertical support to a hanging plant container. The weight of the container reflects the moisture content of the soil stored within the container. A plurality of bars are secured to the shaft providing a sight utilized in conjunction with a scale calibrated in terms of the moisture content of the soil, thereby advising the user when the plant needs water, or when a dangerous drought condition exists. An eye-hook is swivelably secured to the apparatus permitting the apparatus to be suspended downwardly from an overhead supporting surface, and permitting the plant to be rotated. A hook is formed at the lowermost end of the shaft, facilitating convenient support for the hanging plant container. Means are provided to adjustably vary the compression of the spring thereby allowing various size plant containers and plants to be utilized by the apparatus.
    Type: Grant
    Filed: February 9, 1977
    Date of Patent: March 14, 1978
    Inventor: Robert D. Loeb