# US 8,541,496 B2 · Energy absorbing composition and impact and sound absorbing applications thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,541,496 B2 - Document ID: US8541496B2 - Status: Granted - Kind: B2 - Application number: 12/792,354 - Filed: 2010-06-02 - Published: 2010-12-02 - Granted: 2013-09-24 - Earliest claimed: 2005-12-29 - Applicants: Joel Sereboff - Inventors: Joel Sereboff - Web page: https://patentgrep.com/patent/US8541496B2 ## CPC - C08L 25/06: Polystyrene - C08L 23/04: Homopolymers or copolymers of ethene - C08L 23/10: Homopolymers or copolymers of propene - F23M 20/005: {Noise absorbing means} - F24V 99/00: Subject matter not provided for in other main groups of this subclass - G10K 11/165: Particles in a matrix - Y10T 428/13: Hollow or container type article [e.g., tube, vase, etc.] - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - F23M: CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR - F24V: COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR - G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A substantially non-elastic incompressible composition, which substantially does not quickly self-level under standard operating conditions, includes: a suspending agent which reacts substantially as a solid when subjected to forces below a critical force, and which becomes substantially flowable when subjected to forces above said critical force; ceramic microparticulates dispersed within the suspending agent; flexible-walled microparticulates dispersed within the suspending agent; and celled macroparticulates dispersed within the suspending agent. The composition provides an incident energy absorbing property. The incident energy may include sound energy, and the microparticulates and macroparticulates may convert some of the sound energy into heat, or may diffract the sound energy. ## Claims ### Claim 1 A method of manufacturing a substantially non-elastic incompressible composition which substantially does not quickly self-level under standard operating conditions, the method comprising: mixing glycerin with water to form a first interim mixture; adding an aqueous solution of acrylic acid polymer and hydrocarbon distillate containing ammonium hydroxide to said first interim mixture while mixing to form a second interim mixture; adding celled macroparticulates to said second interim mixture while mixing to form a third interim mixture; and adding ceramic microparticulates and flexible-walled microparticulates to said third interim mixture while mixing to form said composition. ### Claim 2 (depends on 1) The method of claim 1, further comprising adding aerogel nanoparticulates at low shear to said composition. ### Claim 3 (depends on 1) The method of claim 1, further comprising adding 1% to 2% by weight of aerogel nanoparticulates at low shear to said composition. ### Claim 4 (depends on 1) The method of claim 1, wherein the firm interim mixture comprises 60 to 80 parts by weight of said glycerin and 20 to 40 parts by weight of said water. ### Claim 5 (depends on 1) An energy absorbing composition formed according to the method of claim 1, comprising: a suspending agent which reacts substantially as a solid when subjected to forces below a critical force, and which becomes substantially flowable when subjected to forces above said critical force; ceramic microparticulates dispersed within said suspending agent; flexible-walled microparticulates dispersed within said suspending agent; and celled macroparticulates dispersed within said suspending agent; aerogel dispersed within said suspending agent, wherein the composition is substantially non-elastic and incompressible, and wherein the composition substantially does not quickly self-level under standard operating conditions. ### Claim 6 (depends on 1) An energy absorbing composition formed according to the method of claim 1, comprising: a suspending agent which reacts substantially as a solid when subjected to forces below a critical force, and which becomes substantially flowable when subjected to forces above said critical force; ceramic microparticulates dispersed within said suspending agent; flexible-walled microparticulates dispersed within said suspending agent; and celled macroparticulates dispersed within said suspending agent; aerogel layered with said suspending agent in a container, wherein the composition is substantially non-elastic and incompressible, and wherein the composition substantially does not quickly self-level under standard operating conditions. ### Claim 7 (depends on 6) The composition of claim 6, wherein said aerogel comprises nanoparticulates. ### Claim 8 (depends on 7) The composition of claim 7, said nanoparticulates including nanoparticulates ranging from approximately 0.6 nanometers to approximately 800 nanometers in width. ### Claim 9 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a jacket. ### Claim 10 (depends on 9) The article according to claim 9, wherein the jacket comprises a composite of silica aerogel and fibrous reinforcement. ### Claim 11 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for placement within the exterior of a vehicle. ### Claim 12 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for placement within a speaker housing. ### Claim 13 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for use at a wall, roof, ceiling, floor, or door of a building. ### Claim 14 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for placement within headphones. ### Claim 15 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a fluid-impervious container. ### Claim 16 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a flexible-walled container. ### Claim 17 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for use as a palm rest for a keyboard, mouse, or workstation. ### Claim 18 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for use as a seat or seat cushion. ### Claim 19 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for use as a seatback or seatback cushion. ### Claim 20 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed in a container configured for placement at, around, or under the body of an animal. ### Claim 21 (depends on 1) An article which comprises the composition formed according to the method of claim 1 disposed as an interface between an orthopedic device and the soft tissue of any member of the animal kingdom.