Orifice system
CA 2075950 C · Owner: Tatum, Gary · Inventors: Kendrick, Ray; Tatum, Gary
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An orifice installation for centering the orifice aperture (52) within a plate carrying device (32) is disclosed. The orifice installation uses an orifice plate (50) in cooperation with a seal (64) that surrounds the outer edge (62) of the orifice plate (50) to seal the plate to a fitting (56). Reliefs (76) are formed in the nonsealing portion of the surface of the seal (64) through which the orifice plate (50) outer circumference (62) protrudes. The carrying device (32) is provided to receive the plate and the seal. A mechanism is provided to have contact between the carrying device (32) and the protrusions (78) in order to use the manufacturing tolerances of the plate (50) 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 December 12, 1991 and granted July 27, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2013.
- 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.