Rubber-metal bushing
AssigneePullman Incorporated
InventorRonald J. McLaughlin
Life of this patent
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Abstract
A rubber-metal bushing includes a seamless inner metal DOM tube surrounded by an elastomer cylinder. A flanged ferrule is press fit into one or both ends of the tube so that the flange engages an end portion of the cylinder. The bushing is cost reduced by replacing the DOM tube with a seamed tube formed from flat stock. An adhesive at the tube-ferrule interface maintains the two elements together.
Claims9
An improved bushing for bearing column loads including an inner metal tube surrounded by an elastomer cylinder and a flanged ferrule press-fit into the metal tube at one tube end, the flange of the ferrule overlying a selected portion of an end surface of the elastomer cylinder, wherein the improvement therewith comprises:
- the tube having a cylindrical wall defining a longitudinal axis along which said column loads are borne and a seam extending in the tube wall parallel to the axis;
- and
- an adhesive at the interface of the metal tube and the ferrule.
Dependencies are inferred from the claim text.