Restraining protective seat for infants
CA 2084448 A1 · Owner: Koyanagi, Toshiro · Inventors: Koyanagi, Toshiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An infant-restraining protective seat (1) includes a seat back (3) tiltably attached to the body (7) of a seat portion via a turning shaft (20), with the seat portion (2) and seat back (3) being foldable. A torsion spring (54) is interposed between the body (7) of he seat portion and the seat back (3). The torsion spring (54) is adapted to assume a free state when an upper hook pin (52) is at an .alpha. position. Under these conditions, the seat back (3) is capable of tilting forward to .beta. under its own weight. When the seat back 3 is tilted in the direction of .beta. shock is mitigated by the torsion spring (54). When the seat back (3) is tilted toward .gamma. and .delta. half-latching …
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 3, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2014.
- 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.