Gas driven mechanical oscillator and method

Details Gas driven mechanical oscillator and method Gas driven mechanical oscillator and method

1998-03-24

1999-02-02

Capossela, Ronald

Refrigeration

Cryogenic treatment of gas or gas mixture

Liquefaction

60373, 91277, F25J 100

Patent

active

058650407

ABSTRACT:
A gas driven oscillator (10) comprising an engine (11) having a cylinder (12) and a pair of expansion chambers (13, 14) on either side of a floating piston (15) adapted to reciprocate within the cylinder (12). The piston (15) is mounted on a piston rod (16) extending through the cylinder (12) and into a compressor (17). Compressed air is delivered from a tank (20) to the engine (11) via a pair of valves (22, 23) mounted on an adjustment screw and slidably disposed on the piston rod (16). The spacing between the valves (22, 23) can be adjusted in order to vary the amplitude of the piston (15) within the cylinder (12). The piston rod (16) includes spaced slots (24, 25) which alternate align with passages inside the respective valves (22, 23) to deliver a pulse of compressed air to the respective chambers (13, 14) of the cylinder (12). Mercury is added to or discharged from a tank (42) which is rigidly secured to piston rod (16) to vary the inertia of the oscillator (10).

REFERENCES:
patent: 711525 (1902-10-01), Place
patent: 3185040 (1965-05-01), Ligon
patent: 3782246 (1974-01-01), Hilbrands
patent: 4016941 (1977-04-01), Sanders

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