Hydroacoustic apparatus and valving mechanisms for use therein

Details Hydroacoustic apparatus and valving mechanisms for use therein Hydroacoustic apparatus and valving mechanisms for use therein

1974-11-11

1977-02-01

Maslousky, Paul E.

Motors: expansible chamber type

Cyclically operable

Distributor forms traversed movable portion of working...

91303, 91321, 91328, F01L 1700, F01L 2504, F01B 718

Patent

active

040056376

ABSTRACT:
Impact tools are described which are capable of developing percussive forces for rock drilling and other repetitive high force applications. A hydroacoustic oscillator contained in such tools includes a hammer and a valve mechanism which is actuated by the hammer for controlling the flow of pressurized fluid so as to establish pressure variations which sustain the oscillation of the hammer. A number of alternative valve mechanisms are disclosed, each including a valve element, the motion of which is controlled by controlling the flow of fluid with respect to the valve element as the hammer and valve element move relative to each other. Such flow control is afforded by chambers defined by the valve element; hydraulic fluid flow with respect to which is controlled so as to determine the deceleration of the valve element and the motion of the element in its actuation by the hammer.

REFERENCES:
patent: 626497 (1899-06-01), Meissner
patent: 692799 (1902-02-01), Soley
patent: 3050033 (1962-08-01), Carey
patent: 3079900 (1963-03-01), Hunnicut
patent: 3411592 (1968-11-01), Montabert
patent: 3766830 (1973-10-01), Montabert

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