Air cooled damper
AssigneeSimpson Industries, Inc.
InventorFrancis G. Sullivan
Life of this patent
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Abstract
An air cooled torsional vibration damper utilizing air passages for producing circulation of cooling air. An inertia ring of a composite construction includes a high thermal conductivity metal adjacent a heat producing elastomer, and a denser metal ring adds mass. Air passages, including a radial passage portion, are defined in the inertia ring adjacent the engaging surfaces of the ring components.
Claims8
An air cooled vibration damper for rotary shafts comprising, in combination, a hub member having an axis of rotation and a cylindrical surface radially spaced from said axis and concentric thereto, an elastomer member mounted on said hub surface having a hub engaging surface and an inertia element engaging surface defined thereon, a first annular metallic inertia element formed of a metal having a high rate of thermal conduction mounted upon said elastomer member inertia element engaging surface in direct association therewith, a second annular inertia element formed of a high density material mounted upon said first element for rotation therewith, and a plurality of air passages defined in one of said elements located adjacent the engaging surfaces of said elements, said passages each including an axially extending portion and a radially extending portion.
An air cooled vibration damper for rotary shafts wherein a hub member mounted upon the shaft to be damped includes an axis and annular inertia member mounted thereon by an annular elastomer, the improvement comprising, the inertia member being of a composite construction including a first element of a metal of high thermal conductivity disposed in direct engagement with the elastomer and a second element of a high density metal directly mounted upon said first element and in radially spaced relationship to said elastomer, and a plurality of cooling air passages defined adjacent to and in heat exchanging relationship to said first element each having a radially extending portion.
An air cooled vibration damper for rotary shafts comprising, in combination, a hub member having an axis of rotation and a concentric cylindrical peripheral surface, an annular elastomeric member mounted on said peripheral surface, an inertia ring comprising a first annular inertia member formed of aluminum directly mounted upon said elastomeric member having a cylindrical surface concentric to said axis of rotation, a second annular inertia member formed of steel directly mounted upon said first member cylindrical surface, and a plurality of open end air passages defined in said inertia ring at said first member cylindrical surface, said passages each including a radially extending portion and an axially extending portion parallel to said first member cylindrical surface.
Dependencies are inferred from the claim text.