Patent Number: 6,308,825

Title: Plastic chain and pin retainer

Abstract: A plastic conveyor chain includes a plurality of plastic link elements connected with each other by connecting pins extending through respective pin holes in the link elements. A retainer device retains the connecting pins in the pin holes, and includes a plug which is normally retained by the link element and which is thus prevented from being lost. The plug is movable in a direction intersecting with an axial direction of the connecting pin, between a first position and a second position. In the first position, the plug is partly situated in the pin hole for normally preventing an unintended axial withdrawal of the connection pin from the pin hole. In the second position, the plug is retracted from the pin hole for allowing an intended axial withdrawal of the connecting pin from the pin hole whenever necessary.

Inventors: Nakamura; Tsuyoshi (Tokyo, JP)

Assignee: Yamakyu Chain Co., Ltd.

International Classification: B65G 17/08 (20060101); B65G 17/06 (20060101); B65G 017/06 ()

Expiration Date: 10/30/2018