Rotary gate valve

Claim 1

A ROTARY TYPE GATE VALVE COMPRISING, A TWO-PART VALVE CASING MEANS EACH PART HAVING A FLOW OPENING THEREIN, ONE OF SAID VALVE CASING MEANS INCLUDING A TUBULAR PORTED MEMBER CONNECTED WITH THE FLOW OPENING AND ADAPTED TO BE POSITIONED WITHIN THE OTHER OF SAID VALVE CASING MEANS WHEN SAID TWO-PART VALVE CASING MEANS IS ASSEMBLED, AN EXPANDABLE AND SLIDEABLE BAND TYPE GATE MEMBER POSITIONED OVER SAID TUBULAR MEMBER AND HAVING PORTS THEREIN SPACED TO ALIGN WITH THE PORTS IN SAID TUBULAR MEMBER, OPERATING MEANS INCLUDED IN SAID CASING MEANS AND MOVABLE THEREIN BEING ADAPTED TO ENGAGE SAID GATE MEMBER TO ROTATE SAID GATE MEMBER ON SAID TUBULAR MEMBER, AND MEANS INCLUDED IN SAID OPERATING MEANS FOR SPREADING SAID BAND TYPE GATE MEMBER ON SAID TUBULAR MEMBER FOR ONE DIRECTION OF MOVEMENT OF SAID OPERATING MEANS CAUSING SLIDEABLE ROTATIVE MOVEMENT OF SAID GATE MEMBER AND CLAMPING SAID GATE MEMBER ON SAID TUBLAR MEMBER FOR AN OPPOSITE POSITION OF SAID OPERATING MEANS AND SAID GATE MEMBER AS SAID PORTS IN SAID GATE MEMBER AND SAID TUBULAR MEMBER ARE BROUGHT INTO AND OUT OF ALIGNMENT.