Composite and self-lubricating bushing

Details Composite and self-lubricating bushing Composite and self-lubricating bushing

1990-07-16

1992-03-10

Hannon, Thomas R.

Bearings

Linear bearing

Plain bearings

384 13, 384279, 384286, 384902, F16G 2402, F16G 3310

Patent

active

050945483

ABSTRACT:
A composite and self-lubricating bushing comprises a monolithic steel body having a machined internal cylindrical surface and a porous bearing layer applied to the surface. The porous bearing layer is formed by compacting and sintering a particulate bearing material. The steel body may also include a cavity for storing lubricant and at least one passageway extending between the cavity and the internal cylindrical surface. The bushing may be fabricated by positioning the steel body concentrically over an elastomeric plug, charging the annular cavity between the body and the plug with a sinterable particulate, expanding the elastomeric plug diametrically to compact the particulate, removing the plug and heating the bearing body and compacted particulate.

REFERENCES:
patent: 2227307 (1940-12-01), Hildabolt
patent: 4575429 (1986-03-01), Jacobson

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