| 摘要 |
The shock absorber piston has its annular series of fluid passageways controlled by an annular floating valve disk, an outer marginal portion of which can seat upon a circular bearing edge formed on lower face of the piston, and an inner marginal portion can seat upon the outer marginal portion of a bearing washer rigid with the piston rod. A thin centering washer of the approximately the thickness of the valve disk is rigid with the piston and is seated upon the bearing washer and is normally substantially coplanar with the valve disk and has an absolute minimum of clearance therewith. The periphery of the centering washer is provided with a series of notches to constitute passages whose section is proportionate to the lift of the valve disk at its central part.
|
