Patent · US Expired

Mold for suction/blowing system

US6514068B2 · kind B2 · utility

1Cited by

7References

7Claims

0Family size

Assignee

SIG Blowtec GmbH & Co. KG · DE

Inventors

Willi Döhmen · Rheydt, DE
Frank Schüller · Frechen, DE
Dirk Wehrens

Key dates

Filing date	Oct 5, 2001
Grant date	Feb 4, 2003
Priority date	—
Expiry date	Oct 5, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2949/0715
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A molding apparatus has a pair of mold halves having faces engageable together to form a nonstraight passage having an intake end and an output end, extruder means for forming a hollow plastic preform and feeding it to the intake end of the passage, pump means connected to the output end of the passage for drawing gas therefrom and thereby applying drawing the preform through the passage, and a seal carried on one of the faces, extending along the passage, and engaging the other of the faces for preventing gas flow between the faces into the passage when the mold halves are closed together.

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