Patent · US Expired

Bearing-mounted plastic wheel

US4490128A · kind A · utility

11Cited by

4References

16Claims

0Family size

Assignee

Fag Kugelfischer Georg Shäfer AG · DE

Inventors

Siegfried Weiss · Schweinfurt, DE
Gunther Heurich · Schweinfurt, DE
Werner Kotzab · Bocholt, DE

Key dates

Filing date	Jul 8, 1983
Grant date	Dec 25, 1984
Priority date	—
Expiry date	Jul 8, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49455
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An annular wheel of plastic is rotatably mounted on a central bearing. The wheel has a generally H-shaped cross-section, with radially outward and radially inward arms joined by a radial crossbar. An array of stiffening ribs at various circumferential locations around the crossbar of the H-shaped cross-section stiffen the wheel. To prevent the peripheral travel surface of the outward arm of the wheel from developing undulations during cooling following initial molding of the plastic wheel, the ribs have recesses in their opposite, axially outwardly directed sides. Dimensional relationships between the axial width and circumferential thickness of the rib, and the peripheral surface of the wheel and the thickness of the crossbar of the wheel are disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.