US Patent 7,624,694 (Dec. 1, 2009) “Resilient
Device, Karl L. Aschenbach (Tacoma, WA)
Bumpers and
Fenders prevent damage when boats
bump against pilings and docks. Mr. Aschenbach
has developed a resilient bumper based on a mounting
connected to a resilient leaf spring made out
of extruded high strength abrasion resistant plastic
with a low coefficient of friction, such as ultrahigh-molecular
weight polyethylene.
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