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. 20, 1976
Filed:
Aug. 29, 1974
Erwin Buhrer, 8200 Schaffhausen, CH;
Other;
Abstract
The upper part of a foundry mold is manufactured by utilizing a pattern device which includes a gate pin having a guide hole therein which is adapted to engage a guide pin extending from the mold pattern of the foundry mold in order to retain the pattern device in place during production of the upper part of the foundry mold. An upper trough pattern may be mounted for axial movement relative to the gate pin. The upper trough pattern is configured to define a trough from which a plurality of gate pins may extend. By structuring at least two of the gate pins located at opposite ends of the trough with guide holes engaging guide pins extending from the mold pattern, rotation of the upper trough pattern about either of the guide pins may be prevented.