Robert S Loeb

US Patent:

20050051577, Mar 10, 2005

Filed:

Sep 4, 2003

Appl. No.:

10/655286

Inventors:

Robert Loeb - Vista CA, US
Thomas Bailey - San Diego CA, US

International Classification:

B67D005/60

US Classification:

222145600

Abstract:

A fluid mixing device is formed as a one-piece unit having opposite inlet and outlet ends, a first, inlet bore portion extending from the inlet end for connection to a supply of a primary fluid under pressure, an outlet bore portion extending up to the outlet end, and a pair of spaced, relatively short, cylindrical venturi passageways of reduced cross-sectional dimensions extending from the inlet bore portion to the outlet bore portion, each venturi passageway having a throat. The unit has a first transverse inlet communicating with the first venturi passageway adjacent the throat for connection to a supply of a first secondary fluid and a second transverse inlet adjacent the throat of the second venturi passageway for connection to a supply of a second secondary fluid, whereby the secondary fluids are drawn into the primary fluid stream flowing in the respective venturi passageways.

US Patent:

62932942, Sep 25, 2001

Filed:

Jun 24, 1999

Appl. No.:

9/339770

Inventors:

Robert D. Loeb - Vista CA
David M. Giuntoli - San Diego CA
Hugh O. Williams - Oceanside CA

Assignee:

Hydrosurge, Inc. - San Diego CA

International Classification:

G05D 1103

US Classification:

137 1

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.