US Patent No. 10,655,282


Patent No. 10,655,282
Issue Date May 19, 2020
Title Underlayment Panel Having Drainage Channels
Inventorship Steven Lee Sawyer, Huntington Beach, CA (US)
Assignee Brock USA, LLC, Boulder, CO (US)

Claim of US Patent No. 10,655,282

1. An impact absorption panel having a top surface, a bottom surface, and a core, the panel having a plurality of adjacent bottom projections disposed across the bottom surface, each bottom projection having a first stage and a second stage, the first stage defining a support surface for contact with the ground and further defining a first spring rate characteristic and the second stage defining a second spring rate characteristic wherein the first spring rate characteristic provides for more deflection under load than the second spring rate characteristic, the panels being made from a plurality of polyolefin beads, the plurality of polyolefin beads bonded together by at least one of pressure and heat to produce a substantially water-impervious surface.