Patent · US Active

Injection unit for a shaping machine

US11390003B2 · kind B2 · utility

0Cited by

4References

7Claims

0Family size

Assignee

ENGEL AUSTRIA GMBH · AT

Inventors

Gerhard Dimmler · Mürzzuschlag, AT
Christoph BALKA · Aiser, AT
Friedrich Pernkopf · Linz, AT

Key dates

Filing date	Oct 14, 2021
Grant date	Jul 19, 2022
Priority date	—
Expiry date	Oct 14, 2041

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C2045/835
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An injection unit for a shaping machine includes an injection piston arranged displaceably in an injection cylinder and at least two drive units for displacement of the injection piston. Each of the at least two drive units is lubricated by an oil chamber which is oil-tightly sealed off in relation to the surroundings, and each oil chamber holds an oil volume, above which is arranged an air volume. The air volumes of the oil chambers are connected together in air-conducting relationship by a connecting conduit.

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