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:
May. 12, 1992
Filed:
Sep. 07, 1990
Peter J Hylak, Northbrook, IL (US);
Gary L Berge, Crystal Lake, IL (US);
E & H Plastics, Inc., Chicago, IL (US);
Abstract
A method of molding a flipper link to reduce or eliminate the tendency of the flipper link to break. The method includes the steps of forming a mold cavity for forming a flipper link having a first end portion, a second end portion and an intermediate necked-down portion. The necked-down portion provides an area between the first and second end portions which more easily twists and absorbs the stress exerted on the flipper link during use. Pins are provided in the cavity for forming an aperture in each of the first and second end portions. Plastic material is injected into the cavity at each end of the first and second end portions such that the plastic material flows into the cavity about the pins and the knit line or lines are formed in the flipper link in a location substantially centrally of the necked-down portion to thereby transfer the stress on the flipper link away from the apertures so as to substantially eliminate the tendency of the flipper link to break about the apertures.