Speed regulator device

Claim 1

IN A FLUID MECHANISM HAVING ROTARY MEANS THEREIN TO PRODUCE GAS PRESSURE WHICH VARIES AS A FUNCTION OF THE SPEED OF ROTATION OF SAID ROTARY MEANS, THE COMBINATION OF LIQUID PUMP MEANS INCLUDED IN SAID ROTARY MEANS TO PRODUCE A LIQUID PRESSURE WHICH VARIES AS A FUNCTION OF SAID ROTARY SPEED, BY-PASS CONDUIT MEANS TO CIRCULATE LIQUID FROM THE OUTLET OF SAID PUMP MEANS BACK TO THE INLET THEREOF, RESTRICTION MEANS IN SAID BY-PASS CONDUIT MEANS, A CHAMBER ASSOCIATED WITH SAID CONDUIT MEANS BETWEEN SAID RESTRICTION MEANS AND SAID PUMP MEANS FOR CONVERTING SAID LIQUID PRESSURE TO A GAS PRESSURE WHICH VARIES WITH SPEED, SAID CHAMBER INCLUDING A MASS OF GAS HYDRAULICALLY SEALED AND TRAPPED IN SAID CHAMBER AT ALL TIMES DURING OPERATION OF SAID MECHANISM WHEN SAID LIQUID COVERS SAID RESTRICTION, SAID CHAMBER INCLUDING MEANS TO VENT SAID GAS TO A CONSTANT REFERENCE PRESSURE EACH TIME AND ONLY WHEN SAID ROTARY MEANS IS AT REST, AND TEMPERATURE-SENSITIVE VALVE MEANS OPERATIVELY ASSOCIATED WITH SAID BY-PASS CONDUIT MEANS TO DECREASE THE RESISTANCE TO FLOW OF SAID LIQUID AS ITS TEMPERATURE DECREASES AND TO INCREASE THE RESISTANCE TO FLOW OF SAID LIQUID AS ITS TEMPERATURE INCREASES, TO RENDER SAID GAS PRESSURE SUBSTANTIALLY INDEPENDENT OF TEMPERATURE VARIATIONS OF SAID LIQUID.