Piston-cylinder device

Details Piston-cylinder device Piston-cylinder device

1982-10-28

1985-02-19

Garrett, Robert E.

Expansible chamber devices

Rectilinearly moving working member and coaxial or parallel...

92116, 92165PR, F01B 300

Patent

active

044998139

ABSTRACT:
In a piston-cylinder device, a guide ring (11) that is provided with helical flutings (12, 26) is arranged between the piston (25) and the cylinder (2). This guide ring (11) has an inner fluting (12). With this it engages an outer fluting (26) on the piston (25). The outer ring surface (13) is smooth. It is provided with full length grooves (15) in order to conduct the pressure medium beneath the lifting piston. The piston (25) is fluted (26) only on one portion of its outer surface. The inclination of this helical fluting (12, 26) amounts to 10.degree.-60.degree.. A rotation-preventing plate (21) holds the piston (25) against rotation. This piston-cylinder device is formed especially for very high and also for eccentric loadings.

REFERENCES:
patent: 2237970 (1941-04-01), Pabst
patent: 3453938 (1969-07-01), Fewel
patent: 3722371 (1973-03-01), Boyle
patent: 3834283 (1974-09-01), Beichel et al.
patent: 3835753 (1974-09-01), Bunyard
patent: 3961565 (1976-06-01), Lampert

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