Booster assisted actuating systems

Claim 1

A BOOSTER-ASSISTED ACTUATING SYSTEM COMPRISING IN COMBINATION A FIRST LEVER, A SECOND LEVER, A FIXED MOUNTING, A FIRST PIVOTAL CONNECTION BETWEEN SAID SECOND LEVER AND SAID MOUNTING, A SECOND PIVOTAL CONNECTION BETWEEN SAID FIRST AND SECOND LEVERS, AN ABUTMENT CONNECTION BETWEEN SAID FIRST AND SECOND LEVERS, SAID SECOND PIVOTAL CONNECTION BEING DISPOSED BETWEEN SAID FIRST CONNECTION AND SAID ABUTMENT CONNECTION, A FORCE INPUT POINT ON SAID FIRST LEVER, A FORCE-OUTPUT POINT ON SAID FIRST LEVER, THE DISTANCE BETWEEN SAID SECOND PIVOTAL CONNECTION AND SAID FORCE-OUTPUT POINT BEING SUBSTANTIALLY LESS THAN THE DISTANCE BETWEEN SAID FIRST PIVOTAL CONNECTION AND SAID FORCE OUTPUT POINT, FORCE-BOOSTING MEANS, A CONNECTION BETWEEN SAID FORCE-BOOSTING MEANS AND SAID SECOND LEVER, VALVE MEANS CONTROLLING SAID FORCE-BOOSTING MEANS, SAID VALVE MEANS BEING CONTROLLED BY RELATIVE MOVEMENT OF SAID FIRST AND SECOND LEVERS IN SUCH A MANNER THAT, ON APPLICATION OF A FORCE AT SAID FORCE-INPUT POINT IN A DIRECTION SUCH AS TO TURN SAID FIRST LEVER TO BREAK SAID ABUTMENT CONNECTION, SAID VALVE MEANS ARE CONTROLLED TO ENERGISE SAID BOOSTER MEANS TO TURN SAID SECOND LEVER ABOUT SAID FIRST PIVOTAL CONNECTION TO RE-ESTABLISH SAID ABUTMENT CONNECTION AND THEREBY ASSIST MOVEMENT OF SAID FIRST LEVER, WHEREAS WHEN SAID BOOSTER IS INOPERATIVE, SAID FIRST LEVER PIVOTS ABOUT SAID SECOND PIVOTAL CONNECTION.