Sound Absorbing Panel
Patent Number: US 11468872 Grant Date: 2022-10-11 Filing Date: 2021-04-06
Overview
Filed April 6, 2021 and granted October 11, 2022, this patent secures a practical advancement in self-supporting interior acoustic panels that balances sound absorption, structural stiffness, and durability. Drafted to protect a specific combination of material parameters, the claims capture an inner Rockwool core and cloth cover engineered with precise ranges for core density (nominally 2.5–4.5 lb/ft3, with embodiments up to 6 lb/ft3), binder percentage (≈1.75–2.75%), mat thickness (35–45 mm), and lightweight cover weight (0.25–0.50 oz/ft). These material choices produce a panel that maintains edge detail and impact resistance sufficient for frameless mounting while reducing sag and enabling simpler, lower-cost fabrication. The specification also emphasizes reduced resin content for improved fire performance and presents comparative acoustic testing on stringent mounts to demonstrate performance gains over earlier framed designs. Inventors based in Amarillo, TX and the applicant based in Amarillo, TX worked with our team to translate decades of prior art and in-house testing into a focused, commercially useful claim set.
Key Features
- Rockwool inner core tuned for stiffness and absorption
- Binder and density ranges that enable frameless mounting
- 35–45 mm mat thickness with lightweight cloth cover
- Lower resin usage for enhanced fire resistance
This patent strengthens product roadmaps for architects and manufacturers seeking robust, install-friendly acoustic solutions and underscores technical leadership in building interior acoustics and materials engineering.
Invention Details
Abstract: A sound absorbing panel for managing acoustic environments with desired durability, stiffness and advantageous characteristics for self-supporting sound-absorbing panels intended to be attached to indoor walls and ceilings of buildings. The sound absorbing panel comprising a height, a width, a length and a cover. The sound absorbing panel comprising materials characterized by an inner core comprising a core density, a core binder and a thickness. The core density is between two and a half and four and a half pounds per cubic-foot. The core binder is between one and three-fourths and two and three fourths percent. The thickness comprises a thickness between 35-45 mm. The cover comprises a cover weight. The cover weight is between one quarter and one half ounces per foot.
Summary of the Invention: A sound absorbing panel for managing acoustic environments with desired durability, stiffness and advantageous characteristics for self-supporting sound-absorbing panels intended to be attached to indoor walls and ceilings of buildings. Said sound absorbing panel comprising a height, a width, a length and a cover. Said sound absorbing panel comprising materials characterized by an inner core comprising a core density, a core binder and a thickness. Said core density is between two and a half and four and a half pounds per cubic-foot. Said core binder is between one and three-fourths and two and three fourths percent. Said thickness comprises a thickness between 35-45 mm. Said cover comprises a cover weight. Said cover weight is between one quarter and one half ounces per foot. the combination of said core density and said core binder provides said inner core of said sound absorbing panel with enough impact resistance and edge detail to mount said sound absorbing panel without a frame without said sound absorbing panel sagging.
Said sound absorbing panel for managing acoustic environments with desired durability, stiffness and advantageous characteristics for self-supporting sound-absorbing panels intended to be attached to indoor walls and ceilings of buildings. Said sound absorbing panel comprising said height, said width, said length and said cover. Said sound absorbing panel comprising materials characterized by said inner core comprising said core density, said core binder and said thickness. Said core density is between two and a half and four and a half pounds per cubic-foot. Said core binder is between one and three-fourths and two and three fourths percent. Said thickness comprises a thickness between 35-45 mm.
Said sound absorbing panel for managing acoustic environments with desired durability, stiffness and advantageous characteristics for self-supporting sound-absorbing panels intended to be attached to indoor walls and ceilings of buildings.
Patent Document
Related: Mechanical Engineering | Acoustics | Construction | Materials | Safety Systems | Amarillo, Texas | Shannon Warren, Patent Attorney