UNIVERSAL ROLL ASSEMBLY
Original Publication Date: 1996-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
Proposed is a universal roll assembly designed for relative ease of assembly. The roll assembly utilizes composite shaft technology and self centering plastic end caps. Referring to Figure 1, the roll assembly is manufactured by preparing a hollow, stainless steel tube 20 with ports (not shown) therein for plastic flow. Tube 20 is then processed, by injection molding, so as to form a first end cap 22 having a plurality of centering ribs 23 thereon, and a pair of tabs 24. In Figure 2, a second end cap 26 is molded separately so as to include, for example, a gear 27 thereon, locking means 29, and centering ribs 25 . A roll 28, shown Figures 1 and 2, slips over shaft 20 and onto ribs 23 of the first end cap 22. The second end cap 26 slips over the opposite end of shaft 20 so that tabs 24 (Figure 1) engage locking means 29 (Figure 2). Ribs 25 are pressed into the remaining end of roll 28. The portions of tube 20 extending beyond end caps 22 and 26 may be used to mount bearings or bushings thereto prior to installation in a subsystem.