Central vacuum cleaner wall valve, hose nipple, and cleaning system
CA 2531781 C · Owner: Arato, Paul · Inventors: Cunningham, J. Vern; Arato, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hose nipple has longitudinal axis, distal end and aperture. Distal end closed and in line with axis for insertion into wall valve. Aperture opens out of line with axis. Nipple and valve alignment mechanisms align nipple and valve apertures for mating. Valve member slides in valve on insertion of nipple through opening of valve against front surface of member. In first position front surface between opening and aperture. Fluid connection through valve prevented. In second position front surface further into valve, and fluid connection provided. Valve and nipple longitudinal retention mechanisms retain nipple. Mechanisms engaged by rotational movement. Valve and nipple rotational coupling …
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 30, 2005 and granted October 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 30, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.