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:
Oct. 23, 1990
Filed:
Sep. 06, 1989
Man Roland Druckmaschinen AG, Offenbach am Main, DE;
Abstract
A chambered doctor blade unit (1) has at least one doctor blade (7, 8; 32) projecting from leading edges of a generally U-shaped or channel-shaped rail element, closed off at the lateral ends by side walls (4) to form the unit so that it can be inexpensively made by extrusion, rolling or other simple profiled rail forming machinery. A rear wall of the unit is formed with an elongated slit (12), preferably narrower in the middle. The unit (1) can be releasably coupled to a carrier (2) by interlocking rotatable pins (22) formed with projecting locking cams (23) with grooves or recesses (25) formed in bolts projecting from a rear surface (10) of the chambered doctor blade unit (1). The chambered doctor blade unit (1) thus can be readily removed by rotating the pins by handles (26), not requiring tools, and maximum ink distribution is ensured by the elongated slit which receives ink via a flattened funnel-shaped distribution duct (16) coupled to the holder unit (2).