Browse Prior Art Database

COMPOSITE SHAFTS

IP.com Disclosure Number: IPCOM000026413D
Original Publication Date: 1991-Oct-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 65K

Publishing Venue

Xerox Disclosure Journal

Abstract

A composite shaft that includes an elongated, hollow, metallic tubular member having a core of a hardened, moldable material and the shaft outer surface having at least one functional feature thereon is disclosed.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 85% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

COMPOSITE SHAFTS

Proposed Timothy R. Jaskowiak Classification

U.S. C1.464/180 Int. C1. F16c 3/00

A composite shaft that includes an elongated, hollow, metallic tubular member having a core of a hardened, moldable material and the shaft outer surface having at least one functional feature thereon is disclosed.

The hardened moldable material is a thermoplastic or thermosetting resin which may optionally contain additional materials to impart certain selected properties to the surface of the functional feature, for example gears, rollers, pulleys, or other drive mechanism mounted on a shaft.

The composite shaft has an aperture gate extending through the shaft from an inside surface to an outer surface. The aperture gate allows the functional feature to be connected to moldable material in the core of the shaft.

The shaft is fabricated by placing the hollow, tubular, shell like portion in a mold which has at least one cavity for at least one functional feature to be formed on the outer surface or an end of the shaft. A subsequent step is filling the mold with a hardenable, moldable material, flowing it through the shaft core aperture gate and cavity to form the functional feature on the shaft. The moldable material is permitted to harden and then the shaft is remove from the mold.

U.S. Patent 3,659,434 discloses a related shaft which has a tubular member filled with resin and separately fabricated functional features that are manually placed...