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:
Dec. 25, 2018
Filed:
Jan. 08, 2016
Digger Specialties, Inc., Bremen, IN (US);
Robert Douglas Koren, Cary, NC (US);
DIGGER SPECIALTIES, INC., Bremen, IN (US);
Abstract
A column or other elongate molded part is molded using an elongate tubular mold having a closed end, an open end and a flexible sidewall. After the column or other molded part is formed, it is extracted from the mold by pulling the column or other molded part axially through the open end of the mold. The inner surface of the mold may comprise a recessed or protruding form to mold a protruding or sunken relief on or in an exterior surface of the molded part. The column may be extracted using an expandable plug that is inserted into the interior of the column or other molded part through the open end of the mold. The expandable plug is expanded to engage and seal against an inner surface of the elongate molded part. A pressurized gas is introduced into the interior of the elongate molded part through the plug to expand the mold before pulling the column through the open end of the mold.