Cushioning means for hydraulic cylinder

Details Cushioning means for hydraulic cylinder Cushioning means for hydraulic cylinder

1976-07-29

1977-12-27

Maslousky, Paul E.

Motors: expansible chamber type

Working member position responsive motive fluid control

Working member carries part within working chamber which...

91396, F15B 1522

Patent

active

040647889

ABSTRACT:
Cushioning means for cushioning the end portion of the stroke of a piston in a cylinder comprising a stepped cushioning member or spear which enters a cylinder head bore to form therewith an annular orifice which successively decreases in area and gradually increases in radial width from one step to the next thus to decrease piston velocity at substantially uniform rate and, hence, at substantially constant deceleration with substantially constant pressure drop across the annular orifice.

REFERENCES:
patent: 3704650 (1972-12-01), Berg
patent: 3964370 (1976-06-01), Rich

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