Continuous adjustable backing bar for profiling coater blade
CA 2179059 C · Owner: Burns, James R. · Inventors: Burns, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A backing bar assembly (20) has a plurality of positively positionable backing bar units (40) which are retained within an inverted U-shaped housing by semi-cylindrical lifters (68) which are adjusted by adjustment screws (60) connected to the housing. Each backing bar unit (40) has concave end surfaces (54) which face the adjacent backing bar units. A pair of backing bar units is engaged by the semi-cylindrical convex surfaces (72) of a lifter and may thus be vertically positioned by rotation of the adjustment screw. By adjusting two backing bar units at a single screw dramatic, discontinuities between backing bar units are avoided. An inflatable resilient seal (50) is engaged by all 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 December 6, 1994 and granted June 11, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 6, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.