Accelerometer apparatus

Claim 1

ACCELEROMETER APPARATUS COMPRISING: A FLUID MEDIUM; JET-LAUNCHING MEANS FOR EJECTING A MAIN JET OF FLUID UNDER PRESSURE INTO AND THROUGH SAID MEDIUM, SAID FLUID OF SAID JET HAVING A MASS DENSITY DIFFERING SUBSTANTIALLY FROM THAT OF SAID FLUID MEDIUM, SAID JET HAVING A SUBSTANTIALLY STRAIGHT-LINE, UNDEFLECTED FORM IN THE ABSENCE OF RELATIVE ACCELERATION BETWEEN SAID JET-LAUNCHING MEANS AND PARTICLES OF SAID JET BUT DEPARTING PROGRESSIVELY FARTHER FROM SAID STRAIGHT-LINE FORM IN RESPONSE TO INCREASES IN COMPONENTS OF SAID RELATIVE ACCELERATION TRANSVERSE TO SAID JET; APERTURED BARRIER MEANS IN THE PATH OF SAID JET AND DEFINING AN APERTURE POSITIONED TO PAS A PROGRESSIVELY CHANGING FRACTION OF THE CROSS-SECTION OF SAID JET AS SAID DEPARTURE OF SAID JET FROM SAID STRAIGHT-LINE FORM CHANGES IN RESPONSE TO SAID RELATIVE ACCELERATION COMPONENTS; MEANS RESPONSIVE TO SAID JET TO PRODUCE OUTPUT SIGNALS REPRESENTATIVE OF THE MAGNITUDE OF SAID FRACTION OF SAID CROSS-SECTION OF SAID JET BY SAID APERTURE; ACCELERATION-SIGNAL UTILIZATION MEANS HAVING ACCELERATION-SIGNAL INPUT MEANS AND OPERABLE IN RESPONSE TO SIGNALS INDICATIVE OF SAID RELATIVE ACCELERATION APPLIED TO SAID INPUT MEANS; MEANS FOR SUPPLYING SAID OUTPUT SIGNALS TO SAID INPUT MEANS TO OPERATE SAID UTILIZATION MEANS; AND MEANS FOR APPLYING A PRESSURE SUBSTANTIALLY GREATER THAN AMBIENT PRESSURE TO OPPOSITE SIDES OF SAID JET AT LEAST IN THE INITIAL PORTION OF SAID TRAJECTORY THEREOF.