Level control valve

• US 3,168,105 A
• Filed: 09/27/1962
• Issued: 02/02/1965
• Est. Priority Date: 09/27/1962
• Status: Expired due to Term

• Current Assignee: Richard L. Cisco, Roger H. Blanchard
• Original Assignee: Richard L. Cisco, Roger H. Blanchard
• Inventors: Cisco, Richard L., Blanchard, Roger H.
• Application Number:
  US04/226,711
• Time in Patent Office: 859 Days
• US Class Current: 137/386
• CPC Class Codes: G05D 9/02 without auxiliary power
• CPC Class Codes: Y10T 137/7287 Liquid level responsive or maintaining systems

Claims

1. A VALVE FOR CONTROLLING THE LEVEL OF LIQUID IN A TANK COMPRISING A HOUSING HAVING A PASSAGE THERETHROUGH FOR FLOW OF LIQUID;

A VALVE MEMBER MOVABLE IN SAID HOUSING TO OPEN AND CLOSE SAID PASSAGE;

JET ASSEMBLY HAVING A NOZZLE MEANS IN COMMUNICATION WITH SAID PASSGE UPSTREAM OF SAID VALVE MEMBER AND A RECEIVER MEANS SPACED FROM SAID NOZZLE MEANS UPON WHICH A JET OF LIQUID FROM SAID NOZZLE MEANS IMPINGES TO TRANSFORM THE VELOCITY HEAD OF THE JET TO DIFFERENT PRESSURE HEADS ACCORDING TO WHETHER OR NOT THE JET IS SUBMERGED IN THE LIQUID IN THE TANK;

AN ACTUATOR MEANS BEARING ON SAID VALVE MEMBER AND MOVABLE IN SAID HOUSING BY CHANGE IN PRESSURE HEAD ACTING THEREON THUS TO CONTROL MOVEMENT OF SAID VALVE MEMBER TO OPEN AND CLOSE SAID PASSAGE;

SAID ACTUATOR MEANS AND HOUSING DEFINING A CHAMBER WHICH IS IN COMMUNICATION WITH SAID RECEIVER MEANS AND TO WHICH CHAMBER SUCH DIFFERENT PRESSURE HEADS ARE TRANSMITTED TO ACT ON SAID ACTUATOR MEANS.