Orbital shaking attachment
CA 2130858 C · Owner: Fletcher, David John · Inventors: Fletcher, David John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An orbital shaking attachment can be fitted or removed from a magnetic stirrer thereby giving the stirrer the extra function of orbital shaking in addition to its primary function of magnetic stirring. The principal of he invention could also be used to make a dedicated orbital shaker for other applications such as in an over, incubator or liquid filled tank. The orbital shaking attachment includes a top-plate/platform with a circular magnet attached centrally to its underside and a base-plate with a central circular hole. The two plates are separated by ball bearings which are able to roll around orbitally in bearing cups on both plates. When operated the base-plate is static and the …
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 August 25, 1994 and granted October 31, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 25, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2016.
- 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.