Sail furling
CA 1058977 A · Owner: Jackson, Patrick T. · Inventors: Jackson, Patrick T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a sailing craft wherein a sail rolls up within a recess in the mast on a vertical wind-up member and is hauled out and retracted through a luff slot in the mast the slot, edges supporting the sail at various settings and wind pressures there is provided means permitting ready interchange or removal of sails without removing the wind-up member. The wind-up member is preferably a two-part vertically disposed rod held under, adjustable tension, and provided with a longitudinal channel into which a bead on the luff of the sail may be threaded through an opening near the base of the mast. A two-part swivel surrounds and is slidable up and down the wind-up member the upper part, being …
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 July 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 24, 1996.
- 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.