The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2022
Filed:
Oct. 14, 2021
Applicant:
Engel Austria Gmbh, Schwertberg, AT;
Inventors:
Gerhard Dimmler, Steinhaus, AT;
Christoph Balka, Schwertberg, AT;
Friedrich Pernkopf, Gramastetten, AT;
Assignee:
ENGEL AUSTRIA GmbH, Schwertberg, AT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 45/83 (2006.01); B29C 45/72 (2006.01); B29C 45/53 (2006.01);
U.S. Cl.
CPC ...
B29C 45/83 (2013.01); B29C 45/531 (2013.01); B29C 45/72 (2013.01); B29C 2045/7271 (2013.01); B29C 2045/835 (2013.01);
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.