公开(公告)号：US4997308A

公开(公告)日：1991-03-05

申请号：US399815

申请日：1989-08-29

Applicant: Robert L. Welling, Jr.

Inventor： Robert L. Welling, Jr.

IPC: E01C5/00

CPC classification number: E01C5/00 ,  E01C2201/02 ,  E01C2201/16

Abstract: A paving stone of a square block including four lateral edges, four angled corners and a central hole. The four lateral edges of the square block each have a v-shaped notch formed therein mesial the angled corners. The paving stone also including a plurality of groove-like recesses extending between the corner of the v-shaped notches and the corners of said central square hole to form a paving stone having the appearance of four separate octagons.

Abstract translation: 一个方块的铺路石，包括四个侧边，四个角角和一个中心孔。 方形块的四个侧边缘各自具有形成在其中的成角度的V形槽口。 铺路石还包括在v形凹口的角部和所述中心方孔的角部之间延伸的多个凹槽状凹部，以形成具有四个分开的八边形的外观的铺路石。