Ink ball pen
CA 2309847 A1 · Owner: Lee, Rocky Jenlon · Inventors: Lee, Rocky Jenlon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The liquid ink cartridge, which applies on those the pen tip are same direction with its pen clip or has no, cap to cover pen tip. Comprise a labyrinth groove feed bar at top a vacuum , valve, a pen tip valve and a valve rod, which go through all to change each own open and close. By pushing or twist action to, change valves result as unused state: the pen tip valve close ink path and the vacuum valve opens to, breed expansion air. And as writing state: the vacuum valve closed to create vacuum to hold ink in tube, and the pen tip valve open ink to pen tips and to air breeder which bleeds through a path to top labyrinth, groove feed bar to balance pressure. The same also applies in …
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 May 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2022.
- 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.