Extendible waste hose system
CA 2029049 C · Owner: Mercer, Albert E. · Inventors: Mercer, Albert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for extending and retracting the waste hose for a waste disposal system that is typically found on recreational vehicles and includes power or crank-driven hose extender means for extending the collapsible hose from its collapsed mode stored on-board the recreational vehicle to its, extended configuration which it is used for dumping waste from an RV holding tank into an inlet of an RV waste dump station. The system includes a specialized hose extension and retraction mechanism, and a universal coupling at the end of the hose which will fit waste station inlet pipes of all the commonly used sizes, which run from 3" to 4-1/2 " in diameter. In addition, a special structure is used to …
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 October 31, 1990 and granted May 31, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 31, 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.