Expansible chamber devices – Relatively movable working members – First working member moves second coaxial working member...
Patent
1989-06-22
1991-05-21
Kwon, John T.
Expansible chamber devices
Relatively movable working members
First working member moves second coaxial working member...
92 61, 92151, F01B 700
Patent
active
050165224
ABSTRACT:
A multi-stage air pressure cylinder is made of superposed components tightly fastened together wherein additional stages can be added by superposing additional components. The two-stage cylinder comprises two end wall members each having a cylindrical recess facing each other and divided by a fixed partition wall having a perforation therethrough. The partition wall and the end wall members are tightly fastened together. The partition wall subdivides two compression chambers. A piston is located in each compression chamber. One piston has a projection extending outside the cylinder and the other is adapted to exert a mechanical pressure on the first one while fluid pressure is exerted on both pistons.
REFERENCES:
patent: 2944520 (1960-07-01), Swanson
patent: 2983256 (1961-05-01), Seeloff
patent: 3288036 (1966-11-01), Fisher
patent: 3832852 (1974-09-01), Schmucker
patent: 3837765 (1974-09-01), Weise et al.
patent: 3880051 (1975-04-01), Eppler
Denion Thomas
Kwon John T.
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