Fluid motor construction

Motors: expansible chamber type – Working member position responsive motive fluid control – Working member carries part within working chamber which...

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Details

91 26, F15B 1522

Patent

active

039994635

ABSTRACT:
An improved spring controlled poppet-type cushion for a fluid piston-cylinder device, wherein the cushion is connected to the piston by spring means and aligned with the inlet-exhaust opening at the end of the cylinder. The improved cushion includes retaining structure for holding the spring associated with it in axial alignment with the opening for receipt therein as the piston approaches the end of the cylinder. This permits the piston to move into contact with the wall without interference from the spring. The sealing of the cushion within the opening in the end of the cylinder is effected at a point spaced axially from the piston when the latter is in contact with the end wall to provide an axial spacing between the cushion and piston.

REFERENCES:
patent: 2556698 (1951-06-01), Loewe
patent: 3067726 (1962-12-01), Williams

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