Patents Assigned to Minnesota Valley Engineering, Inc.
  • Pressure building circuit for a container for low temperature fluids
    Patent number: 4947651
    Abstract: A pressure building circuit for a double-walled tank containing a low temperature fluid, including a settling ring and an orifice between the tank outlet and the pressure building coil for maintaining a minimum pressure.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: August 14, 1990
    Assignee: Minnesota Valley Engineering, Inc.
    Inventors: Timothy Neeser, Duane Preston, Michael Lutgen
  • Carbonated beverage storage and dispensing system and method
    Patent number: 4683921
    Abstract: An improved carbonated beverage storage and dispensing system is disclosed which employs separate tanks for carbon dioxide and syrup. Mixing occurs during dispensing. For each type of syrup there are preferably two syrup supply tanks. Each syrup tank may be selectively connected to either a syrup filling source or to a sanitizing system for cleaning the tank. This system allows one of the syrup supply tanks to be sanitized or refilled, while another supplies syrup for dispensing, thus allowing uninterrupted beverage service.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: August 4, 1987
    Assignee: Minnesota Valley Engineering, Inc.
    Inventor: Timothy A. Neeser
  • Liquid container
    Patent number: 4548335
    Abstract: A container for the storage of liquids at temperatures that deviate widely from ambient temperature in which the container is formed with an outer vessel and an inner vessel supported by a neck tube from the outer vessel and which includes an annular ring member spanning the space between the outer and inner vessels adjacent their upper ends to stabilize the inner vessel within the outer vessel.
    Type: Grant
    Filed: June 25, 1982
    Date of Patent: October 22, 1985
    Assignee: Minnesota Valley Engineering, Inc.
    Inventors: R. Scott Remes, Paul J. Thompson
  • Cryogenic connector
    Patent number: 4491347
    Abstract: A cryogenic connector which embodies interfitting male and female metal members, each having a portion in sliding engagement in the assembled relation with said portion of the female member having a coefficient of expansion greater than the corresponding portion of the male member to provide a mechanical shrink seal therebetween at cryogen temperature.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: January 1, 1985
    Assignee: Minnesota Valley Engineering, Inc.
    Inventor: Keith W. Gustafson
  • Method and apparatus for filling cryogenic liquid cylinders
    Patent number: 4475348
    Abstract: A method and apparatus are disclosed for filling a portable cryogenic liquid cylinder from a large stand tank. The invention employs a regulator valve to perform an automatic throttling function whereby the pressure in the liquid cylinder is maintained at a value slightly lower than the upstream pressure in the stand tank. This significantly reduces filling losses due to flashing.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: October 9, 1984
    Assignee: Minnesota Valley Engineering, Inc.
    Inventor: Scott Remes