| 摘要 |
<p>Re? n R. Rich For "CUSHIONING MEANS FOR HYDRAULIC CYLINDER" Cushioning means for cushioning the end portion of the stroke of a piston in a cylinder comprising a stepped cylindrical member which enters a cylinder head bore to form therewith an annular orifice which successively decreases in area and increases in length thus to decrease piston velocity at substantially uniform rate and, hence, at substantially constant deceleration with substantially constant pressure drop across the annular orifice.</p> |
