Underwater propulsion device
CA 2034299 A1 · Owner: Bruce, Martin G. · Inventors: Bruce, Martin G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An underwater propulsion device for propelling a swimmer through the water has a hand held propulsion unit which permits the swimmer to move his hand and forearm to control direction of movement in the water. This allows superior maneuverability in the water. The device comprises in combination a power unit for attachment to the body of a swimmer, the power unit containing a power supply and a sealed motor; a propulsion unit having a propeller within a cylindrical housing, a hand grip on the outside of the housing for a swimmer to hold, a strap on the housing behind the hand grip to fit over a forearm of a swimmer to support the propulsion unit from the forearm, the handgrip having …
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 16, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2013.
- 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.