Retractable writing instrument
CA 2689281 A1 · Owner: Traini, Patrick J. · Inventors: Orem, Christopher P.; Brand, Douglas A.; Traini, Patrick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A writing utensil configurable between retracted and extended configurations is provided. , The writing utensil includes a body having an interior volume and an aperture. A , reciprocally movable nib assembly is located in the body and includes a nib that, when in , the extended configuration traverses the aperture. To prevent the nib from drying when in , the retracted configuration a sealing element seals the aperture. In an embodiment, the , sealing element is a resilient valve element that can be opened by a sleeve slidably engaging , the nib assembly. After the sleeve opens the valve the sleeve slides with , respect to the nib assembly to expose the nib. In another embodiment …
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 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2025.
- 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.