Fluid pulse generator

Claim 1

FLUID APPARATUS WHICH COMPRISES: (A) A FIRST BODY HAVING A SURFACE CONTAINING A GROUP OF SPACED APART FIRST PORTS THEREIN WITH EACH IN CONSTANT COMMUNICATION WITH FLUID AT A FIRST VALUE OF PRESSURE FOR A CONDITION OF EQUILIBRIUM; (B) A SECOND BODY HAVING A SURFACVE CONTAINING A GROUP OF SPACED APART SECOND PORTS THEREIN WITH EACH IN CONSTANT COMMUNICATION WITH FLUID AT A SECOND VALUE OF PRESSURE FOR SAID EQUILIBRIUM DIFFERING FROM SAID FIRST PREESURE VALUE, SAID SECOND BODY SURFACE BEING ADJACENT TO SAID FIRST BODY SURFACE; (C) FIRST MEANS FOR PERMITTING RELATIVE DISPLACEMENT BETWEEN SAID SURFACES SUCH THAT EACH SAID FIRST PORT CAN BE PLACED INTO REGISTRATION WITH SAID SECOND PORTS ONE AT A TIME IN ORDER TO THEREBY UPSET SAID EQUILIBRIUM DURING EACH SAID REGISTRATION, WHERE SAID FIRST PORTS ARE ARRANGED WITH RESPECT TO SAID SECOND PORTS SUCH THAT DURING RELATIVE DISPLACEMENT THERE CAN BE ONLY ONE REGISTRATION AT ANY ONE TIME OF A PAIR OF FIRST AND SECOND PORTS BOTH DIFFERENT FROM THE PAIR OF FIRST AND SECOND PORTS OF THE IMMEDIATELY PRECEDING TIMEWISE REGISTRATION; AND (D) A SECOND MEANS RESPONSIVE TO EACH SAID EQUILIBRIUM UPSET.