Control cartridge for a single-lever mixer fitting
CA 2118966 C · Owner: Graber, Heinz · Inventors: Graber, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a plumbing assembly, a control cartridge for a single-lever mixer fitting is small enough to be installed into the mouth region of a discharge arm. The shut-off elements include a first control disk, which is fixed to the fitting housing and a second control disk which can, be rotated by an actuating lever. The control disks preferably consist of ceramic and have in each case, two, through-passages, one each for cold and hot water. Upon rotation of the fitting, first the cold-water through-passage and then hot-water through-passage are released, and, subsequently, the cold-water through-passage is throttled. With exclusively one rotary movement of the lever, the following flow conditions …
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 March 14, 1994 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 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.