Radial piston machine having piston shoes sealingly contained on

Details Radial piston machine having piston shoes sealingly contained on Radial piston machine having piston shoes sealingly contained on

1985-12-30

1988-02-16

Croyle, Carlton R.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Radially disposed cylinders

92 58, 92187, F01B 1306

Patent

active

047247436

ABSTRACT:
In a radial piston pump, motor, transmission the deep diving or entering piston shoe is utilized and swingably borne in the pivot-bed of the radially reciprocating piston. Since deep diving piston shoes have large piston strokes, the shoes pivot in the pistons in large angles. Thereby a considerable force - portion of the load on the piston is transferred to the wall between the piston and the cylinder, whereby heretofore short pistons occasionally produced welding and sticking between the cylinder wall and the piston wall. The piston therefore receives radially extending portions, which may extend beyond the medial portion of the piston shoe and may even enter into the ring groove of the piston stroke actuator ring. Thereby a very long guidance of the piston on cylinder wall portions is obtained, which makes the application of effective pressure balancing pockets at correct location between piston wall and cylinder wall possible. An extended piston guide and friction - less travel of the piston in the cylinder without wearing or sticking is assured.

REFERENCES:
patent: 2025758 (1935-12-01), Long
patent: 2599609 (1952-06-01), Carey
patent: 3223046 (1965-12-01), Eickmann
patent: 3787128 (1974-01-01), Maistrelli
patent: 3828653 (1974-08-01), Aldinger et al.
patent: 4374486 (1983-02-01), Eickmann

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