Furling boom
CA 2262879 A1 · Owner: Brookes, Thomas Joseph · Inventors: Brookes, Thomas Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A furling boom comprising: a drive housing (1) adapted for mounting on a mast (2), the housing comprising a drive take off (19) and a boom support (6). A boom (3) of substantially c-shaped cross section is pivotally connected to said boom support (6) by a universal joint (5) and having its opening facing upwardly. An elongated mandrel (17) extends within the boom (3) and is connected at one end by a universal joint (18) to the drive take off (19) and at its other end by a rotating floating axle (22) pivotally connected to the free end of the boom (3), whereby the foot of a sail is connected to the mandrel (17) and furled thereabout upon rotation of said mandrel (17). A drive unit …
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 July 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2019.
- 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.