# US 8,464,486 B1 · Contoured floor pads and method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,464,486 B1 - Document ID: US8464486B1 - Status: Granted - Kind: B1 - Application number: 12/807,172 - Filed: 2010-08-31 - Granted: 2013-06-18 - Earliest claimed: 2009-09-12 - Applicants: Paul W. Elliott; Steven M. Chase - Inventors: Paul W. Elliott; Steven M. Chase - Web page: https://patentgrep.com/patent/US8464486B1 ## CPC - E04F 15/225: {Shock absorber members therefor} - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) ## Abstract The apparatus and method for forming a tunable crumb rubber floor pad and flooring system using the pad. The method including the steps of; determining a pad design angle to provide a floor performance; cutting strips of pad material from a relatively thin sheet of recycled crumb rubber to form strips of pad material having two angled sides cut at the pad design angle, chopping the strips into pads wherein each pad has two angled walls and two straight walls. The pads are then stapled to a plywood subfloor. ## Claims ### Claim 1 A floor pad system for tuning a desired floor performance, said floor pad system comprising: an upper floor surface having a base layer; a plurality of floor pads made of a floor pad material supporting said upper floor surface, said plurality of floor pads being affixed to said upper floor surface by a plurality of staples, a first floor pad of said plurality of floor pads having an upper surface with an upper floor pad contact area that supports said upper floor surface, said first floor pad having a lower surface with a lower floor pad contact area, said lower floor pad contact area abutting a subfloor, said upper floor pad contact area of said first floor pad being different than said lower floor pad contact area of said first floor pad, said floor pad material is a crumb rubber matrix pad cut from a sheet of recycled crumb rubber; and a second floor pad of said plurality of floor pads having an upper surface with an upper floor pad contact area that supports said upper floor surface, said second floor pad having a lower surface with a lower floor pad contact area, said lower floor pad contact area abutting said subfloor, said upper floor pad contact area of said second floor pad being different than said lower floor pad contact area of said second floor pad; and whereby said first floor pad is attached to said upper floor pad surface by a first and a second staple of said plurality of staples, said first and second staples each having a pair of staple ends, said pair of staple ends of said first staple extending through said first floor pad and into said base layer of said upper floor surface, said pair of staple ends of said second staple extending through said first floor pad and into said base layer of said upper floor surface; whereby said second floor pad is attached to said upper floor pad surface by a third and a fourth staple, said third and fourth staples each having a pair of staple ends, said pair of staple ends of said third staple extending through said second floor pad and into said base layer of said upper floor surface, said pair of staple ends of said third and fourth staples extending through said second floor pad and into said base layer of said upper floor surface; and whereby said upper floor pad contact area and said lower floor pad contact area of said first and second floor pads enable contouring stiffness of said floor pad system to be tuned to support a variety of loads upon said upper floor surface. ### Claim 2 (depends on 1) The floor pad system of claim 1, wherein said first and second floor pads are a recycled crumb rubber. ### Claim 3 (depends on 1) The floor pad system of claim 1, wherein said floor pad material is a crumb rubber matrix pad cut from a sheet of recycled crumb rubber matrix. ### Claim 4 (depends on 1) The floor pad system of claim 1, wherein said first floor pad has an angled sidewall, said upper floor pad contact area of said first floor pad being greater than said lower floor pad contact area of said first floor pad. ### Claim 5 (depends on 4) The floor pad system of claim 4, wherein said angled sidewall enables more of said floor pad material to contact said base layer during compression. ### Claim 6 (depends on 1) The floor pad system of claim 1, wherein said upper floor surface is a sports floor for athletic events. ### Claim 7 (depends on 1) The floor pad system of claim 1, wherein said floor pad has reduced initial stiffness and increased variable stiffness with increasing deflection. ### Claim 8 A floor pad system for tuning a desired floor performance, said floor pad system comprising: an upper floor surface having a base layer; a plurality of floor pads made of a floor pad material supporting said upper floor surface, said plurality of floor pads being affixed to said upper floor surface by a plurality of staples, a first floor pad of said plurality of floor pads having an upper surface with an upper floor pad contact area that supports said upper floor surface, said first floor pad having a lower surface with a lower floor pad contact area, said lower floor pad contact area abutting a subfloor, said upper floor pad contact area of said first floor pad being different than said lower floor pad contact area of said first floor pad, said floor pad material being a crumb rubber matrix pad cut from a sheet of recycled crumb rubber, said first floor pad having a first sloped side surface and a second sloped side surface; and a second floor pad of said plurality of floor pads having an upper surface with an upper floor pad contact area that supports said upper floor surface, said second floor pad having a lower surface with a lower floor pad contact area, said lower floor pad contact area abutting said subfloor, said upper floor pad contact area of said second floor pad being different than said lower floor pad contact area of said second floor pad; and whereby said first floor pad is attached to said upper floor pad surface by a first and a second staple of said plurality of staples, said first and second staples each having a pair of staple ends, said first and second staple ends of said first staple extending through said first sloped side surface and said upper floor surface, said first and second staple ends of said second staple extending through said second sloped side surface and said upper floor surface; whereby said sloped edges of said first and said second floor pads are attached to said load distribution plate by said first and second staples, said first and second staples contributing to the structural performance of the floor pad system and said load distribution plate; and whereby said first and second floor pads have reduced initial stiffness and increased variable stiffness with increasing deflection. ### Claim 9 (depends on 8) The floor pad system of claim 8, wherein said floor pad material is a crumb rubber matrix. ### Claim 10 (depends on 8) The floor pad system of claim 8, wherein said floor pad material is a crumb rubber matrix pad cut from a sheet of recycled crumb rubber matrix. ### Claim 11 (depends on 8) The floor pad system of claim 8, wherein one of said floor pads has an angled sidewall, said upper floor pad contact area of said one of said first floor pads being greater than said lower floor pad contact area of said one of said first floor pads. ### Claim 12 (depends on 11) The floor pad system of claim 11, wherein said angled sidewall enables more of said floor pad material to contact said base layer during compression. ### Claim 13 (depends on 8) The floor pad system of claim 8, wherein said upper floor surface is a hardwood sports floor for athletic events. ### Claim 14 (depends on 8) The floor pad system of claim 8, wherein said upper floor pad contact area of said first and second floor pads and said lower floor pad contact area of said first and second floor pads enable contouring stiffness of said floor pad system to be tuned throughout to support a variety of loads upon said upper floor surface. ### Claim 15 A floor pad system for tuning a desired floor performance, said floor pad system comprising: an upper floor surface having a base layer, said base layer including a load distribution plate; and a plurality of floor pads made of a floor pad material supporting said upper floor surface, said plurality of floor pads being affixed to said upper floor surface by a plurality of staples, a first floor pad of said plurality of floor pads having an upper surface with an upper floor pad contact area that supports said upper floor surface, said first floor pad having a lower surface with a lower floor pad contact area, said lower floor pad contact area abutting a subfloor, said upper floor pad contact area of said first floor pad being different than said lower floor pad contact area of said first floor pad, said floor pad material is a crumb rubber matrix pad cut from a sheet of recycled crumb rubber; and a second floor pad of said plurality of floor pads having an upper surface with an upper floor pad contact area that supports said upper floor surface, said second floor pad having a lower surface with a lower floor pad contact area, said lower floor pad contact area abutting said subfloor, said upper floor pad contact area of said second pad being different than said lower floor pad contact area of said second floor pad; and whereby said first floor pad has angled sidewalls, said upper floor pad contact area of said first floor pad being greater than said lower floor pad contact area of said first floor pad, said upper floor pad area of said first floor pad abutting said base layer of said upper floor surface during compression of said first floor pad, said angled sidewalls enabling more of said floor pad material to contact said base layer during compression of said first floor pad; and whereby said angled sidewalls are attached to said load distribution plate by a first and a second staple of said plurality of staples, said first and second staples contributing to the structural performance of the floor pad system and said load distribution plate. ### Claim 16 (depends on 15) The floor pad system of claim 15, wherein said floor pad material is a crumb rubber matrix. ### Claim 17 (depends on 15) The floor pad system of claim 15, wherein said floor pad material is a crumb rubber matrix pad cut from a sheet of recycled crumb rubber matrix. ### Claim 18 (depends on 15) The floor pad system of claim 15, wherein said upper floor pad contact area of said first and second floor pads and said lower floor pad contact area of said first and second floor pads enable contouring stiffness of said floor pad system to be tuned to support a variety of loads upon said upper floor surface. ### Claim 19 (depends on 15) The floor pad system of claim 15, wherein said floor pad has reduced initial stiffness and increased variable stiffness with increasing deflection. ### Claim 20 (depends on 15) The floor pad system of claim 15, wherein said upper floor surface is a hardwood sports floor for athletic events.