Seat belt pretensioner
CA 2085422 A1 · Owner: Nishizawa, Muneo · Inventors: Nishizawa, Muneo; Hamaue, Tetsuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Seat Belt Pretensioner A seat belt pretensioner (P) of the type which rotates the take-up shaft (R1) of a retractor (R) in the belt-winding direction so as to wind a length of the belt onto the retractor reel (R3) includes a driven gear (3) connected to the retractor take-up shaft (R1) and a driving gear (1) connected to a power source (2) the driving gear (1) normally being held in clearance from the driven gear (3) in the set condition of the pretensioner and being displaced and rotated upon operation of the power source (2) to engage it with the driven gear( 3) and to drive the driven gear in rotation. The teeth (11 or 31) of one of the gears (1 or 3) have addenda that diverge from 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 December 15, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 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.