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:
Oct. 24, 1989
Filed:
Jul. 26, 1988
Edward J Norton, Boxford, MA (US);
Craig F Fram, Haverhill, MA (US);
Kenneth W Graham, Wakefield, MA (US);
James A Smith, St. Louis Park, MN (US);
New Balance Athletic Shoe, Inc., Boston, MA (US);
Abstract
The process of molding a component of a sole unit for an athletic shoe comprising the steps of supporting a core of a first plastic material in a cavity of a mold, the core defining an integral part of the component and extending within a heel region toward a forefoot region, supporting at least one rigid plug member within the cavity juxtaposed and in partially surrounding relation to the core, injecting a second plastic material into the cavity to fill the cavity, to form a shell around the core, at least partially curing the injected plastic material, removing the plug member, and injecting a third plastic material which upon curing forms a second resilient plastic material having a hardness (Shore A) greater than that of the material of the core into the cavity to fill the area heretofore occupied by the plug member, the plug member being shaped such that the third plastic material forms a set of posts.