Fluid sprinkling – spraying – and diffusing – With means for fluctuating flow or pressure of fluid...
Patent
1983-12-28
1986-08-26
Peters, Jr., Joseph F.
Fluid sprinkling, spraying, and diffusing
With means for fluctuating flow or pressure of fluid...
175422R, E21B 718
Patent
active
046077928
ABSTRACT:
A device generates pulsed liquid jets through a cumulative nozzle at high repetition rates by using a controlled oscillatory motion of the nozzle assembly coupled with the inertia of the water package and a piston to effectively evacuate the nozzle prior to generation of each jet pulse. The cumulative nozzle can be of any form, such as exponential, hyperbolic, cissoid, etc. Forward motion of the nozzle assembly serves to empty the nozzle of liquid residual therein from the previously generated jet. That forward motion also positions the residual liquid, freshly added liquid and a liquid accelerating piston for the generation of the next subsequent pulse. At the end of the forward motion stroke, the liquid and accelerating piston are rapidly accelerated into the nozzle by means of a high pressure gas. The high pressure gas can be derived from any usual source such as a compressor, a gas generating propellant, the combustion of a fuel or by the rapid compression of a driving gas through the use of a second piston of considerably greater mass than the liquid accelerating piston. The jet pulses obtained are at a repetition rate up to several pulses per second and can be used to cut and break hard materials such as rock, ceramic and concrete.
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Drake Hugh H.
Peters Jr. Joseph F.
Weldon Kevin Patrick
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