Rubber support
CA 2018336 C · Owner: Freudenberg, Ulrich · Inventors: Freudenberg, Ulrich; Freudenberg, Tillman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydraulically dampened rubber support has a liquid filled working chamber which is in at least a first region defined by a plate of magnetizable materials supported by a spring. The plate may be reciprocated in direction of the working chamber dependent on parameters present using a magnetic system. The damping of acoustically prominent vibrations transmitted to the rubber support is improved.
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 June 5, 1990 and granted October 5, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2012.
- 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.