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. 19, 1991
Filed:
Apr. 30, 1990
David B Hollesen, Easton, PA (US);
Joseph W Kaczorek, Neshanic Station, NJ (US);
Edwin S Treible, Ringoes, NJ (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
An apparatus (10) for spraying a liquid, such as a low-solids flux, onto a substrate (12), during its transit along a first path (15), comprises a spray gun (38) directed at the substrate. The gun (38) is carried by a carriage (34) reciprocated by a traversing mechanism (42,44,46) which reciprocates the gun back and forth along a second path (30) generally perpendicular to the first path (15). The spray gun (38) is reciprocated such that its spray pattern during each pass slightly overlaps the pattern made during the previous pass, thereby achieving substantially uniform liquid coating on the substrate. Each time the gun (38) reaches an end of its travel, its tip (39) is advantageously cleaned automatically by a brush (84) wetted by a solvent to avoid tip clogging.