Floating boom
CA 2030808 A1 · Owner: Buch, Carsten · Inventors: Rasmussen, Lars B.; Buch, Carsten; Jensen, Steen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A floating boom. ABSTRACT, A floating boom comprising a number of separate buoyancy chambers (1), a skirt (2), a ballast (3) and an air supply conduit (4), is safeguarded against bursting of the buoyancy chambers (1) by means of at least one duct (8) extending from the interior of the buoyancy chamber (1) to an outlet that is located between the buoyancy chamber (1) and the lower edge (6) of the skirt. By letting the air supply conduit connection with each single chamber open into said duct (8) a nonreturn valve function is further obtained in a simple manner. There is also described a method of obtaining supplementary security against all buoyancy chambers (1) being emptied if a single …
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 June 19, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2012.
- 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.