# US 2013/0153106 A1 · Three Dimensional Sipe > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153106 A1 - Document ID: US20130153106A1 - Status: Published application - Kind: A1 - Application number: 13/325,833 - Filed: 2011-12-14 - Published: 2013-06-20 - Earliest claimed: 2011-12-14 - Assignees: Bridgestone Americas Tire Operations, LLC - Inventors: Kathleen Clemmer - Web page: https://patentgrep.com/patent/US20130153106A1 ## CPC - B60C 11/1281: {different within the same sipe, i.e. enlarged width portion at sipe bottom or along its length} - B60C 11/1218: {Three-dimensional shape with regard to depth and extending direction} - B60C 2011/1213: {sinusoidal or zigzag at the tread surface} - B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES ## Abstract Provided is a sipe extending into a tire tread, comprising an outer radial portion defined by a first waveform having a first amplitude, a first width, and a first wavelength, and an inner radial portion defined by a second waveform having a second amplitude, a second width, and a second wavelength. The first wavelength may be less than 5% of the length of the sipe or may be more than 100% of the length of the sipe, or the second wavelength may be less than 5% of the length of the sipe or may be more than 100% of the length of the sipe, or the second amplitude may be more than 50% of the first wavelength or may be less than 10% of the first wavelength, or the second amplitude may be more than 50% of the second wavelength or may be less than 10% of the second wavelength. ## Claims ### Claim 1 A waveform sipe, said waveform sipe having length, said waveform sipe extending into a tire tread, and waveform sipe comprising: an outer radial portion defined by a first waveform having a first amplitude, a first width, and a first wavelength; and an inner radial portion defined by a second waveform having a second amplitude, a second width, and a second wavelength; and wherein, said first wavelength is less than 5% of the length of the sipe, or said first wavelength is more than 100% of the length of the sipe, or said second wavelength is less than 5% of the length of the sipe, or said second wavelength is more than 100% of the length of the sipe, or said second amplitude is more than 50% of the first wavelength, or said second amplitude is less than 10% of the first wavelength, or said second amplitude is more than 50% of the second wavelength, or said second amplitude is less than 10% of the second wavelength. ### Claim 2 (depends on 1) The waveform sipe of claim 1, wherein said second waveform is a type of waveform different from that of the first waveform. ### Claim 3 (depends on 1) The waveform sipe of claim 1, wherein said second waveform is the same type of waveform as the first waveform. ### Claim 4 (depends on 3) The waveform sipe of claim 3, wherein said first waveform is a sine or zig-zaged waveform. ### Claim 5 (depends on 4) The waveform sipe of claim 4, wherein the first width is between 0 mm and 5 mm, inclusive. ### Claim 6 (depends on 5) The waveform sipe of claim 5, wherein the length of the sipe is between 2 mm and 50 mm. ### Claim 7 (depends on 6) The waveform sipe of claim 6, wherein the first wavelength is between 2 mm and 50 mm. ### Claim 8 (depends on 7) The waveform sipe of claim 7, wherein the second width is greater than the first width. ### Claim 9 (depends on 8) The waveform sipe of claim 8, wherein the width of the sipe is described by an opening function. ### Claim 10 (depends on 9) The waveform sipe of claim 9, wherein said first wavelength is less than 5% of the length of the sipe, or more than 100% of the length of the sipe. ### Claim 11 (depends on 9) The waveform sipe of claim 9, wherein said second wavelength is less than 5% of the length of the sipe, or more than 100% of the length of the sipe. ### Claim 12 (depends on 9) The waveform sipe of claim 9, wherein said second amplitude is more than 50% of the first wavelength, or less than 10% of the first wavelength. ### Claim 13 (depends on 9) The waveform sipe of claim 9, wherein said second amplitude is more than 50% of the second wavelength, or less than 10% of the second wavelength. ### Claim 14 A tire tread comprising at least one tread element comprising a waveform sipe therein, said waveform sipe having length, said waveform sipe extending into the tire tread, and waveform sipe comprising: an outer radial portion defined by a first waveform having a first amplitude, a first width, and a first wavelength, wherein said first waveform is a sine or zig-zaged waveform; an inner radial portion defined by a second waveform having a second amplitude, a second width, and a second wavelength; wherein said second waveform is the same type of waveform as the first waveform; and wherein said first wavelength is less than 5% of the length of the sipe, or said first wavelength is more than 100% of the length of the sipe, or said second wavelength is less than 5% of the length of the sipe, or said second wavelength is more than 100% of the length of the sipe, or said second amplitude is more than 50% of the first wavelength, or said second amplitude is less than 10% of the first wavelength, or said second amplitude is more than 50% of the second wavelength, or said second amplitude is less than 10% of the second wavelength. ### Claim 15 (depends on 14) The waveform sipe of claim 14, wherein the first width is between 0 mm and 5 mm, inclusive. ### Claim 16 (depends on 15) The waveform sipe of claim 15, wherein the length of the sipe is between 2 mm and 50 mm. ### Claim 17 (depends on 16) The waveform sipe of claim 16, wherein the first wavelength is between 2 mm and 50 mm. ### Claim 18 (depends on 17) The waveform sipe of claim 17, wherein the second width is greater than the first width. ### Claim 19 (depends on 18) The waveform sipe of claim 18, wherein the width of the sipe is described by an opening function. ### Claim 20 A waveform sipe, said waveform sipe having length and width, said waveform sipe having depth defined by its extent into a tire tread, and waveform sipe comprising: an outer radial portion defined by a first waveform having a first amplitude, a first width, and a first wavelength, wherein said first waveform is a sine or zig-zaged waveform, said first width is between 0 mm and 5 mm, inclusive, the first wavelength is between 2 mm and 50 mm; an inner radial portion defined by a second waveform having a second amplitude, a second width, and a second wavelength, wherein said second waveform is the same type of waveform as the first waveform, the second width is greater than the first width; wherein the length of said sipe being between 2 mm and 50 mm; wherein the width of the sipe is described by an opening function; and wherein, said first wavelength is less than 5% of the length of the sipe, or said first wavelength is more than 100% of the length of the sipe, or said second wavelength is less than 5% of the length of the sipe, or said second wavelength is more than 100% of the length of the sipe, or said second amplitude is more than 50% of the first wavelength, or said second amplitude is less than 10% of the first wavelength, or said second amplitude is more than 50% of the second wavelength, or said second amplitude is less than 10% of the second wavelength.