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:
Sep. 15, 1987
Filed:
Oct. 14, 1986
Applicant:
Inventors:
Ferdinand Proksa, Leverkusen, DE;
Hans-Michael Sulzbach, Konigswinter, DE;
Lothar Rohrig, Hennef, DE;
Hans-Wilhelm Fuhrbach, Bonn-Oberkassel, DE;
Assignee:
Maschinenfabrik Hennecke GmbH, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
249162 ; 100214 ; 425589 ; 425595 ; 425406 ; 4254512 ; 4254519 ;
Abstract
Closure units for molding tools, in particular those for the production of polyurethane moldings comprising long lifting cylinders arranged between an upper cross head and a movable cross head for lowering and raising the upper half of a molding tool, the movable cross head being mounted on columns connecting the fixed cross head to a base by means of short lifting cylinders having arrestable drag pistons arranged therein, were found to offer advantages in terms of economy of design and operation.