Elastic coupling
CA 2006516 A1 · Owner: Pletsch, Hubert · Inventors: Wolf, Franz J.; Pletsch, Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A soft accoustically decouplable rotationally elastic shaft coupling has a hub element and driven element that is formed from carrier plates. At least one cage is formed in the carrier plates, in which at least one rubber shockabsorbing element is installed, this being in the form of a cylindrical disk or a cylindrical ring or segment of a ring. in order to arrive at a particularly soft rotational spring characteristic curve, the rubber shock-absorbing element incorporates equally distributed hollow spaces in the form of regular polyhedrones or spheres, the cross-sectional areas of which are greater than the cross-sectional area of hollow channels that pass centrally through a series of …
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 December 22, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 22, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 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.