Low friction sliding bearing for an axial shaft

Details Low friction sliding bearing for an axial shaft Low friction sliding bearing for an axial shaft

1999-02-17

2000-10-17

Marmor, Charles A

Bearings

Rotary bearing

Resilient bearing surface

384432, F16C 3300

Patent

active

061320951

ABSTRACT:
An apparatus for reliably and efficiently propelling a printing substrate across a printing platen by use of the known roller
ip roller configuration wherein an improved, unitary slider bearing preferably formed of low friction material is coupled to an axial shaft at two points of contact to a upper crown of a slider bearing. The improved bearing is preferably constructed of teflon, or similar low friction material, impregnated resin and formed to create a friction fit in an aperture in a printing platen of a print engine. The improved bearing allows use of a lower cost, less-toleranced axial drive shaft members and eliminates use of typical ball-bearing style bearing assemblies as well as greatly reduces assembly time of the roller, nip roller, axial shaft combination during initial build of the print engine. The improved bearing preferably includes a debris cut-out so that any debris that might collect inside the bearing structure (between the axial shaft/roller and bottom portion of the bearing) can escape without causing any mechanical abrasion to the components of the improved bearing.

REFERENCES:
patent: 3929395 (1975-12-01), Stojek
patent: 5288152 (1994-02-01), Davies
patent: 5522666 (1996-06-01), Tanaka
patent: 5709482 (1998-01-01), Lutz
patent: 5711614 (1998-01-01), Wuest et al.
patent: 5718466 (1998-02-01), Weinerman et al.

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