The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 1994
Filed:
Jun. 09, 1993
John A Christianson, Vancouver, WA (US);
Hewlett-Packard Company, Palo Alto, CA (US);
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.