Bearing arrangement having a polyimide graphite-fiber reinforced composite embedded therein
AssigneeHycomp, Inc.
InventorsBernard E. Nowak, Joseph P. Reardon
Life of this patent
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Abstract
A bearing arrangement comprised of a substrate having a plurality of self-lubricating polyimide graphite-fiber reinforced composite bearing members secured to provide a bearing surface. The bearing arrangement being well suited for use under harsh conditions, including high temperatures, high impacts, and large loads.
Claims5
A bearing arrangement having at least one bearing surface, said bearing arrangement comprising:
- a substrate in the form of a hold-down washer, wherein said substrate has an upper surface which engages with screw means, said upper surface having a plurality of recesses formed therein;
- and
- members comprising a self-lubricating, polyimide graphite-fiber reinforced composite material, said members embedded in said plurality of recesses to provide a load bearing structural component of the bearing arrangement and a lubricating low friction film for the substrate.
A bearing arrangement having at least one bearing surface, said bearing arrangement comprising:
- a substrate in the form of a full journal, wherein said substrate has a plurality of holes;
- and
- members comprising a self-lubricating, polyimide graphite-fiber reinforced composite material, said members embedded in said plurality of holes to provide a load bearing structural component of the bearing arrangement and a lubricating low friction film for the substrate.
A forgoing press assembly to shape hot metal, said forging press assembly comprising:
- a base;
- at least one pair of vertical columns anchored to and extending upwardly from said base;
- a ram assembly movable on said columns, said ram assembly comprising:
- two pairs of hall journals, each pair of half journals forming a cylinder around one of said two columns, wherein each half journal has an inner surface with a self-lubricating, polyimide graphite-fiber reinforced composite material embedded therein for engaging said column as said ram assembly moves on said columns, said composite material providing a bearing structural component of the ram assembly and a lubricating low friction film for the half journals;
- an upper forging bit;
- and
- a lower stationary bit positioned a predetermined distance from said upper bit, said hot metal compressed between said upper forging bit and said lower stationary bit.
A stand assembly for flattening slabs of hot metal, said assembly comprising:
- a pair of work rolls disposed between said chocks for flattening the slabs of metal;
- a pair of drive rolls for rotating said work rolls;
- a plurality of chocks for supporting the work rolls and the drive rolls;
- a screw for moving said chocks, and said work and drive rolls towards or away from each other, and
- a hold-down washer having an upper surface engageable with said screw and a lower surface engageable with a chock, said upper surface having a self-lubricating, polyimide graphite-fiber reinforced composite material embedded therein for engaging said screw, said composite material providing a bearing structural component of the hold-down washer and a lubricating low-friction film for the upper surface, and
- a housing for housing said screw, said work rolls, said drive rolls, said plurality of chocks and said hold-down washer.
A rotating shaft assembly comprising:
- a full journal having a bore and self-lubricating, polyimide graphite-fiber reinforced composite button means embedded therein, said full journal having an outer surface, said composite material providing a bearing structural component of the shaft assembly and a lubricating low friction film for the full journal;
- and
- a rotatable shaft insertable through said bore for rotating in bearing engagement with said self-lubricating button means.
Dependencies are inferred from the claim text.