Exhaust silencer casings
CA 1262711 C · Owner: Unipart Group Limited · Inventors: Robinson, Norman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A strand of fibres of a suitable silencing material eg, basalt, is chopped into discrete lengths by passing it between two roller (12, 15) one (15) of which carries a cutter (14). The chopped roving is carried in an air flow, established by an air blast, air jet or a vacuum into a silencer casing (1) via a restricted opening (10). The fibres "fluff-up" to a wool-like consistency a they pass into the silencer casing (1). The strand may comprise continuous or relatively short fibres and these may be twisted, plaited or laid parallel.
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
- Granted November 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 7, 2006.
- 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.