Self-locking safety pin
CA 2019184 C · Owner: Ritchie, Frances · Inventors: Ritchie, Mark; Ritchie, Frances
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A self-locking safety pin comprising a tubular body which extends in circular fashion in a plane between opposed spaced, ends, the ends disposed to form a gap in the circular body and an, elongated curved tongue slidably mounted to extend under bias, between a closed position extending across the gap from one end of the body into the other, and an open position in which the tongue is withdrawn into said one end of the body. The free end of the tongue is tapered to a fabric-piercing point. An actuator by, which the tongue may be moved to open position extends from the, tongue through an elongated slot on the body to the exterior surface of the body. An anchor is also positioned on 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 June 18, 1990 and granted January 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 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.