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. 04, 2000
Filed:
Sep. 16, 1998
Erich Mitteregger, Micheldorf, AT;
Ernst Schwaiger, Micheldorf, AT;
IFW-Manfred Otte Gesellschaft m.b.H & Co. KG., Micheldorf, AT;
Abstract
An apparatus for injection molding bent pipe made of plastic material which has a bend part (8) with an arcuate centerline and with uniform internal cross-section, and cylindrical connecting parts (9, 22) adjoining the bend part at one or both sides. The connecting parts (9, 22) have larger internal cross-section than the bend part (8). The apparatus includes an injection mold which can be divided along a plane containing an arcuate centerline of the bend part into at least two outer mold portions which form a mold cavity. The injection mold includes a bend core with a pivotal member (5) which is pivotable along the arcuate centerline of the bend part and a cylindrical core (13) which is displaceable axially along its centerline, for each connecting part (9, 22). The apparatus includes two bars (1, 2) which are spaced from each other in the plane containing the arcuate centerline and whose respective pivotal mounting points (3, 4) on the pivotal member (5) are guided in the bend part (8) on circular paths about an axis of curvature (K) and in the connecting part (9) adjoining same in parallel relationship therewith.