System for retrofitting a wall to increase sound attenuation
CA 2391775 A1 · Owner: Hettler, Neil R. · Inventors: Hettler, Neil R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A retrofit wall system (600) and a method for retrofitting a preexisting wall to increase sound attenuation characteristics includes resiliently mounting construction members (608) onto a preexisting wall surface and mounting a new wall surface (for example, drywall) thereover. It is desirable to provide insulation (612) (thermal and/or acoustic) between the construction members to further increase sound attenuation. The construction members may be conventional members (606) (for example a 2"x4" (5.08 cm x 10.16 cm)) , resiliently mounted using a resilient channel or web (610) or they may simply , be resilient members directly fastened to the new and old wall surfaces respectively.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed August 23, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 23, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.