Hill, Steadman & Simpson
Separable bottom-end-stop assembly of synthetic resin for slide fastener
 In a separable slide fastener, a separable bottom-end-stop assembly of synthetic resin is in the form of three-member structure composed of a first pin, a second pin and a box. The first pin has a locking portion. The box has first and second pin insertion bores separated by a central partition having a resilient locked portion engageable with the locking portion of the first pin. The box additionally has on the outer side of the first pin insertion bore a short side wall to be received in a cutout in a bottom end portion of one of opposite fastener stringers. Thus, the firm attachment of the box after sewing can be achieved. 
YKK Corporation
A Y Y Y
A44B Y10T Y10T Y10T
inventional additional additional additional
Hiroshi
Mizuno