Underwater buoyancy training obstacle course target hoop
CA 2101436 A1 · Owner: Wallingford, Peter A. · Inventors: Wallingford, Peter A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An underwater obstacle course target hoop (40 54) for use in, underwater buoyancy training includes a plurality of hollow tubular members (42, 56), a plurality of connector members (44 58), interfitted with all but two adjacent opposite ends of the tubular members (42, 56), and a pair of separate end caps (46 60), respectively attached to the two adjacent ends of the adjacent pair of the tubular members (42, 56) so as to define an escape gap (50) between the two adjacent ends of the tubular members (42) for preventing entanglement of a diver with the hoop. The tubular members (42) and connector members (44) define upper and lower portions (40A, 40B) of the target hoop (40). The tubular …
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 January 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2014.
- 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.