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. 11, 1990
Filed:
Sep. 30, 1988
Johann J Schmidthaler, Linz, AT;
Ronald Zach, Linz, AT;
Optyl Eyewear Fashion International Corporation, Norwood, NJ (US);
Abstract
The present invention is directed to a composite, integral polymeric spectacle part. The spectacle part includes a first polymer member and a second polymer member. The polymer members are selected to provide desired characteristics for the spectacle part at the location of the spectacle part where the member is incorporated. In a particular embodiment, it is desirable that the first polymeric member be formed from an elastomeric polymer and that the second member be a substantially rigid polymer. The rigid polymer is preferably formed from a thermosetting polymer having a higher melting temperature than the first elastomeric member. The second rigid member is bound to the first polymer member by heat fusion during an injection molding process. In the method of the invention for forming a composite, integral, polymeric spectacle part, a first polymer member is formed into a shape conforming to a portion of the cavity of an injection mold. The entire shape of the injection mold cavity defines the finished spectacle part. After the first polymeric member is inserted into the cavity portion, a second melted polymer, which has been heated to a suitable temperature above its melting temperature, is injected into the injection mold cavity so as to fill the cavity. The first polymer member and the second injected polymer are in abutting relationship in the injection mold cavity. A composite, integral polymeric spectacle part is prepared by activation and fusion of the first preformed polymer member by the heated second polymer.