Patents by Inventor Fred Kalinovski

Fred Kalinovski 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).

  • Condition responsive valve construction and method of making the same
    Patent number: 3944135
    Abstract: A condition responsive valve construction having a housing provided with a valve seat. A pair of metallic balls are secured together in abutting relation and are movable toward and away from the valve seat so that one of the balls acts to open and close the valve seat. A lever is movably mounted in the housing and acts between the balls to cause movement thereof upon certain movement of the lever caused by a condition responsive means sensing different conditions. Spring means are provided for tending to hold the balls in the valve seat closed position thereof and in a certain valve seat open position thereof so that the lever can have lost motion travel between the balls for creating a differential in the conditions required to open and close the valve seat.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: March 16, 1976
    Assignee: Robertshaw Controls Company
    Inventor: Fred Kalinovski