Patents Assigned to Spring Patents Corporation
  • Leak detection with non-toxic liquids
    Patent number: 5589631
    Abstract: Systems for fluids (including liquids) and materials with a fluid phase. The material is confined in a primary containment, and a secondary containment is used to keep fluid leaking from the primary containment from the surrounding environs and to keep leachates and other fluids from the primary containment. A safe, non-toxic liquid in the interspace between the two containments is employed in detecting leaks in the containments and can also be employed to protect the containments against chemical attack.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: December 31, 1996
    Assignee: Spring Patents Corporation
    Inventors: G. Everett Spring, Douglas V. Keller, Jr.