Patent · US Expired

Manufacturing of resin-aggregate pipes

US4001370A · kind A · utility

5Cited by

5References

6Claims

0Family size

Assignee

Humes Limited · AU

Inventors

Clifford A. Baker · Melbourne, AU
Rex Miller · Cockatoo, AU

Key dates

Filing date	Apr 9, 1973
Grant date	Jan 4, 1977
Priority date	—
Expiry date	Apr 9, 1993

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C41/38
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Methods of centrifugally molding a resin pipe or molding a layered composite pipe utilizing a rotating inner member are disclosed. The rotating inner member rotates at a speed higher than the centrifugally rotating mold and is movable towards and away from the mold surface. Movement toward the mold compresses the molding material between the rotating inner member and the centrifugally rotating mold. Movement away from the mold permits any material adhering to the inner member to be cleaned from said inner member due to the centrifugal speed of said inner member.

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