Ram with two-part piston rod

Details Ram with two-part piston rod Ram with two-part piston rod

1978-09-29

1980-08-26

Maslousky, Paul E.

Expansible chamber devices

Piston with rigid axially extending hollow stem

Hollow stem forms axially extending fluid passage

92113, 92116, 92166, F16J 112, F01B 300, F01B 3100

Patent

active

042189608

ABSTRACT:
The invention relates to a ram comprising a piston rod in two parts mounted for relative rotation.
A first part extends out of the cylinder, beyond each of the heads, while the second part extends out of the cylinder only beyond one head, namely the upper one, and comprises two axial shoulders directed in opposite directions, located at the two ends of this second part and each cooperating with a shoulder, fast with the first part, corresponding to the maintenance of a fixed relative axial position between the two parts, and two radial bearing surfaces located at the two ends of the second part and cooperating with two radial bearing surfaces fast with the first part, corresponding to the centering of the two parts. The present invention is particularly applied to a rotatable clam-shell bucket.

REFERENCES:
patent: 2542866 (1951-02-01), Grossman
patent: 2740258 (1956-04-01), Weber
patent: 2886007 (1959-05-01), Manchester
patent: 3398924 (1968-08-01), Lothroy
patent: 3759564 (1973-09-01), Seaberg
patent: 3881263 (1975-05-01), Coeurderoy

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