Bronze Bushing and Wear Surface
AssigneeGeneral Electric Company
InventorRobert William Bruce
Life of this patent
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Abstract
A bushing includes a bronze backing layer having a first axial end, a second axial end, and a central opening, the bushing having a cylindrical shape and a porous bronze layer. PTFE or other suitable low friction material is impregnated into the porous bronze layer at one of a radially inner or outer surface of the bushing. A PTFE or other suitable low friction material topical layer is disposed adjacent the impregnated layer. The bushing may optionally comprise a flange which also includes the bronze backing layer, the porous bronze and impregnated layer, and the topical layer on an axially inner or outer surface.
Claims21
A bushing, comprising:
- a bronze backing layer having a first axial end, a second axial end, and a central opening, said bushing having a cylindrical shape and a porous bronze layer;
- an impregnated polymer in said porous bronze layer at one of a radial inner or outer surface of said bushing;
- and
- a topical polymer layer disposed adjacent said impregnated polymer.
A bushing comprising:
- a substantially circular bronze backing layer having depth between a first axial end and a second axial end, said backing layer having a radially inward surface and a radially outward surface;
- a porous layer of bronze disposed on one of said radially inward surface or said radially outward surface of said backing layer;
- an amount of PTFE impregnated into said porous bronze backing layer;
- and
- a topical layer of PTFE disposed on said impregnated PTFE and said porous layer of bronze.
A bushing comprising:
- a substantially lead-free backing layer formed of a bronze alloy, said backing layer having a cylindrical shape and a radially inner surface and a radially outer surface;
- a porous bronze layer bonded to said bronze backing layer;
- a impregnated polymer into said porous backing layer on at least one of said radially inner or outer surface;
- a topical layer of polymer disposed on said impregnated polymer of said at least one of said radially inner or outer surface.
Dependencies are inferred from the claim text.