Radial piston motor or pump

Motors: expansible chamber type – Three or more cylinders arranged in parallel radial or... – Radially disposed cylinders

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Details

92187, F01B 1304, F16J 114

Patent

active

045627703

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 transfered 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: 1409757 (1922-03-01), Nelson
patent: 2260240 (1941-10-01), Taylor
patent: 4372179 (1983-02-01), Dolenc

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