Typewriting machines – Carriage or carriage-moving or movement-regulating mechanism – Carriage – per se – or guideway therefor
Patent
1993-06-09
1994-11-22
Burr, Edgar S.
Typewriting machines
Carriage or carriage-moving or movement-regulating mechanism
Carriage, per se, or guideway therefor
400352, 400139, B41J 1122
Patent
active
053663055
ABSTRACT:
A glide bearing subsystem is described. The invented bearing subsystem includes an expanse having a non-circularly cross-sectional through hole providing in a first, e.g. an upper, region thereof two arcuately spaced planar contact surfaces providing dual parallel lines of contact with a cylindrical rail upon which the carriage is mounted for reciprocal axial movement. A second, e.g. a lower, region of the hole generally opposite and preferably smoothly joining the first hole region is semicylindrical and of slightly greater diameter than that of the rail, thereby controlling inadvertent lift-off of the carriage during acceleration phases of its reciprocal movement along the rail. Preferably, the carriage has a pair of axially spaced bearings formed in generally planar thin expanses of oil-impregnated bronze, which expanses are made by a sintering process and are insert molded integrally with the printer's carriage.
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Plaza et al., "Carriage Support Apparatus"; Xerox Disclosure Journal, vol. 1 No. 5 May 1976 pp. 51-52.
Adams, Jr., "Shaft Mounting Apparatus"; IBM Technical Disclosure Bulletin, vol. 20 No. 4 Sep. 1977 p. 1293.
Burr Edgar S.
Hendrickson Lynn D.
Hewlett--Packard Company
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