公开(公告)号：US5133591A

公开(公告)日：1992-07-28

申请号：US707690

申请日：1991-05-30

申请人： Marvin Skaggs ,  James D. Voelkel

发明人： Marvin Skaggs ,  James D. Voelkel

IPC分类号： B29C33/14 ,  B29C49/04 ,  B29C49/20 ,  B29C70/26 ,  B29D99/00 ,  B60B5/02

CPC分类号： B29D99/0032 ,  B29C33/14 ,  B29C49/20 ,  B29C70/26 ,  B60B5/02 ,  B29C2049/2017 ,  B29C49/04 ,  B29K2021/00 ,  B29L2031/32

摘要： The Improved Wheel is suitable for use on lawn mowers, trash containers, toy wagons and other similar devices. The Improved Wheel is formed in a two step manufacturing process. In the first step, a quantity of hubs are injection molded from a thermoplastic or a thermoset plastic. Two opposing interlocking hubs are used in the manufacture of each wheel. The hubs provide additional strength and improved wear characteristics to the wheel. In the second manufacturing step, a pair of opposing interlocking hubs are placed in the open mold of a conventional blow molding machine. The parison, which is preferably an elastomer, is then extruded between the two open halves of the mold. The two halves of the mold close and capture the parison between the two interlocking hubs in the mold cavity forming a web which radiates from the central bore of the hubs. The remainder of the parison is inflated to form a tube around the exterior of the hubs.

摘要翻译： 改进车轮适用于割草机，垃圾桶，玩具车和其他类似设备。 改进车轮是在两步制造过程中形成的。 在第一步中，一些轮毂由热塑性塑料或热固性塑料注射成型。 在每个车轮的制造中使用两个相对的联锁轮毂。 轮毂为车轮提供额外的强度和改善的磨损特性。 在第二制造步骤中，将一对相对的互锁毂放置在常规吹塑机的开模中。 优选地，弹性体的型坯然后在模具的两个开口半部之间挤出。 模具的两半关闭并捕获模腔中的两个互锁毂之间的型坯，形成从轮毂的中心孔辐射的腹板。 型坯的其余部分被充气以形成围绕轮毂外部的管。