Durable bumper
AssigneeDRiV Automotive Inc.
InventorDarrell Breese
Life of this patent
Estimating the term…
Abstract
A rebound bumper for a shock absorber includes a first portion formed from a first material having a first spring rate and a second portion coupled to the first portion and formed from a second material having a second spring rate greater than the first spring rate. The first portion and the second portion are configured to fit on a piston rod between a piston and a rod guide assembly of the shock absorber. Also, the rebound bumper exhibits a displacement under load relationship with the first spring rate, the second spring rate, and a third spring rate greater than the first spring rate and less than the second spring rate.
Claims20
A rebound bumper for a shock absorber with a pressure tube, a piston, a piston rod, and a rod guide assembly, the rebound bumper comprising:
- a first portion is a first ring disposed about a central axis, the first portion being formed from a first material having a first spring rate, wherein the first portion defines a plurality of thick sections and a plurality of thin sections, the thick sections being spaced apart from each other in a circumferential direction about the central axis by a corresponding thin section of the plurality of thin sections, wherein each thick section has a top surface and a bottom surface and each thin section has a top surface and a bottom surface that are disposed axially between the top and bottom surfaces of the thick sections;
- and
- a second portion coupled to the first portion and formed from a second material having a second spring rate greater than the first spring rate, wherein the first portion and the second portion are configured to be disposed on the piston rod between the piston and the rod guide assembly.
A rebound bumper for a shock absorber, the rebound bumper comprising:
- a first ring disposed about a central axis and formed from a first material having a first spring rate, the first ring having a plurality of alternating thick portions and thin portions, the thick portions being thicker in an axial direction of the central axis than the thin portions, wherein the first ring is symmetrical across a plane that is perpendicular to the central axis;
- and
- a second ring coupled to the first ring and formed from a second material having a second spring rate greater than the first spring rate, wherein the second ring is thicker in the axial direction than the thin portions and thinner in the axial direction than the thick portions, wherein the first ring and the second ring are configured to be disposed on a piston rod between a piston and a rod guide assembly of the shock absorber.
A rebound bumper for a shock absorber, the rebound bumper comprising:
- a first ring disposed about a central axis and formed from a first material having a first spring rate, the first ring having a plurality of alternating thick portions and thin portions, the thick portions being thicker in an axial direction of the central axis than the thin portions;
- and
- a second ring coupled to the first ring and formed from a second material having a second spring rate greater than the first spring rate, wherein the second ring is thicker in the axial direction than the thin portions and thinner in the axial direction than the thick portions, wherein the first ring and the second ring are configured to be disposed on a piston rod between a piston and a rod guide assembly of the shock absorber,
- wherein the second ring is disposed within the first ring.
Dependencies are inferred from the claim text.