Juggling system for amusement, exercising and training
CA 2003304 C · Owner: Shapiro, James R. · Inventors: Shapiro, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for juggling manipulation has a projectile rod assembly (10) for being dynamically sustained by upward blows by a stick (32). The projectile rod assembly is composed of a rod (24) with flexible cups (20,22) on the respective ends of the rod that can be axially reversed by blows from the stick in flight. The stick can engage elastomeric loop (46) around the rod and serve to twirl the projectile rod assembly and, alternatively can be used to drive the loops up and down the rod changing balance in flight. The flexible cups may have scalloped edges (40,42,44) for engagement by the stick (32). Two sticks may be used for the juggling.Changes in manipulative characteristics may be made in …
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 November 17, 1989 and granted February 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2011.
- 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.