Patent ID: 9080629
Filing Date: 2015-07-14
Classification: F16F

Abstract:
1. A shock absorber comprising: a pressure tube defining a fluid chamber; a piston assembly disposed within said fluid chamber, said piston assembly dividing said fluid chamber into an upper working chamber and a lower working chamber, said piston assembly defining a piston valve body having a first plurality of fluid passages extending through said piston valve body; a first valve assembly attached to said piston assembly, said first valve assembly comprising: said first valve disc is movable between a first position closing said first one of said first plurality of fluid passages, a second position where said first valve disc elastically bends to open said first one of said first plurality of fluid passages and a third position where said entire first valve disc moves away from said piston valve body to fully open said first one of said first plurality of fluid passages; said first biasing member is an annular disc defining a central aperture and an outermost circumferential edge spaced radially outward from said central aperture; said first interface directly engages said first biasing member at a position immediately adjacent said outermost circumferential edge of said first biasing member; said shock absorber further comprising: a reserve tube disposed around said pressure tube to define a reserve chamber between said pressure tube and said reserve tube; and a base valve assembly disposed between said fluid chamber and said reserve chamber, said base valve assembly including a base valve body defining a second plurality of fluid passages, said base valve assembly comprising: said second biasing member is an annular disc defining a central aperture and an outermost circumferential edge spaced radially from said central aperture of said second biasing member said first biasing member elastically deflects to allow said entire first valve disc to move away from said piston valve body; said second biasing member elastically deflects to allow said entire second valve disc to move away from said base valve body; said first biasing member elastically deflects due to movement of said central aperture of said first biasing member with respect to said outermost circumferential edge of said first biasing member; and said second biasing member elastically deflects due to movement of an inner portion of said second biasing member with respect to an outer portion of said second biasing member.