F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
267/93
F16F 9/18 (2006.01) F16F 9/348 (2006.01)
Patent
CA 1058643
SHOCK ABSORBER ABSTRACT OF THE DISCLOSURE A shock absorber of the direct acting hydraulic type is disclosed as comprising a reciprocable piston having a piston body, the piston body being formed with first and second sets of spaced flow ports, the sets of flow ports being concentrically oriented with the first set being spaced radially inwardly from the second set; a first valve seat on one end of the piston body adjacent the first set of flow ports; a first valve member engageable with the first valve seat to block fluid flow through the first set of flow ports; first and second sequentially operable springs for resiliently urging the first valve member toward the first valve seat; second and third valve seats on the oppo- site end of the piston body and located radially inwardly and outwardly from the second set of flow ports; a second valve member in the form of a flat annular valve disc dis posed adjacent the second and third valve seats and engage- able therewith to block fluid flow through the second set of flow ports; the ends of the second set of flow ports confronting the second valve member terminating in enlarged size recesses, the area of which is in a predetermined ratio to the cross sectional area of the second set of flow ports.
271574
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