Vibration isolators

Claim 1

A VIBRATION ISOLATOR FOR ISLATING FROM A FIRST BODY A PERIODIC FORCE APPLIED TO A SECOND BODY WHILE AT THE SAME TIME TRANSMITTING TO THE FIRST BODY A CONSTANT FORCE APPLIED TO THE SECOND BODY, WHICH VIBRATION ISOLATOR COMPRISES A VIRIABLE-VOLUME FLUID-FILLED CONTAINER FOR INTERPOSITION BETWEEN THE SAID TWO BODIES, A FIRST VESSEL CONTAINING A FLUID, FIRST CONDUIT MEANS OF WHICH THE EFFECTIVE CROSS-SECTIONAL AREA IS LESS THAN THE EFFECTIVE CROSS-SECTIONAL AREA OF THE SAID CONTAINER, WHICH CONTAINS A BODY OF FLUID AND WHICH COMMUNICATES WITH BOTH THE INTERIOR OF THE SAID CONTAINER AND THE INTERIOR OF THE FIRST VESSEL AND PROVIDES THE SOLE MEANS OF SUCH COMMUNICATION, AT LEAST ONE ADDITIONAL VESSEL CONTAINING A FLUID, ADDITIONAL CONDUIT MEANS OF WHICH THE EFFECTIVE CROSS-SECTIONAL AREA IS LESS THAN THE EFFECTIVE CROSS-SECTIONAL AREA OF THE SAID CONTAINER, WHICH CONTAINS AN ADDITIONAL BODY OF FLUID AND WHICH COMMUNICATES WITH BOTH THE INTERIOR OF THE SAID CONTAINER AND THE INTLERIOR OF THE ADDITIONAL VESSEL AND PROVIDES THE SOLE MEANS OF SUCH COMMUNICATION, THE CONTAINER, VESSELS AND CONDUIT MEANS TOGETHER FORMING A CLOSED SYSTEM, AND THE MASS OF EACH OF THE SAID BODIES OF FLUID, THE DIMENSIONS OF THE CONDUIT MEANS CONTAINING THAT BODY OF FLUID, THE APPARENT BULK MODULUS OF THE FLUID IN THE VESSEL WITH THE INTERIOR OF WHICH THAT CONDUIT MEANS COMMUNICATES AND THE DEGREE OF DAMPING APPLIED TO THAT BODY OF LIQUID BEING SUCH THAT, AT A PARTICULAR FREQUENCY OF THE PERIODIC FORCE, WHICH IS DIFFERENT OF EACH OF THE SAID BODIES OF FLUID, THE INERTIA REACTION OF THAT MASS SUBSTANTIALLY BALANCES THE FORCE EXERTED ON THAT BODY OF FLUID BY THE FLUID IN THAT VESSEL.