Patents Assigned to Keifer Controls, Inc.
  • Fill controller for liquified gas container and apparatus for filling tank using same
    Patent number: 5544685
    Abstract: An electronic sensor and fill controller for use with a refillable liquid gas container is disclosed. The present invention in broadest terms comprises a valve body for the container, a shaft extending from the valve body into the container, an electronic sensor disposed on the shaft, and a controller adapted to initiate, terminate or alter an electrical signal once the sensor senses contact with the liquified gas.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: August 13, 1996
    Assignee: Keifer Controls, Inc.
    Inventor: Dale M. Stieferman