Dock plank assembly

Year	Description
1993	Invention patented by Richard D. Johnson on January 18th, 1993. Abstract: An injection-molded plank for forming a dock comprising an elongated member having a generally box-like shape with a top surface for walking on, a front side, and a backside having a plurality of openings therein with the front side having a plurality of spacers mounted on the front side to space one plank from an adjacent plank with a plurality of, pins extending from the front side with the pins having a diameter smaller than mating openings in the backside of the adjacent plank to hold the planks in a shiftable relationship to one another and a separate reinforcing rib secured to the plank with the reinforcing rib having a fastener plate for securing the reinforcing rib to a support member so that the reinforcing rib provides stiffening to the plank and the pin holds adjacent planks in a shiftable relationship to one another while fastener extending through a fastener plate on the reinforcing rib secures the planks to the support member.
1995	Invention patented by Richard D. Johnson on May 2nd, 1995. Abstract: A dock plank assembly formed from at least two elongated polymer plastic plank having a first support end, a second support end, a top surface for walking on, and an integral longitudinal web therein for providing rigidity and support to the planks with the webs having an opening therein for receiving a free-span rib with the free-span rib spaced from the support ends of the planks and extending transversely through the opening in the webs of the plank to provide rigidity and additional individual support for each of said planks and for providing coactive support for the planks as a unit to thereby maintain adjacent planks in surface walking condition with respect to one another to prevent a user from tripping over protruding edges on the planks.
Source: selected by the editor from original sources.

Dock plank assembly

Invention: Dock plank assembly