Coaxial engine starter system
CA 2177302 C · Owner: Nara, Koji · Inventors: Kogure, Mitsuhiro; Okada, Michio; Nagashima, Shinichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a coaxial engine starter comprising a pinion connected to the output shaft which is driven by an electric motor via a helical spline, a switch unit for selectively closing a power supply line to the electric motor and a solenoid, device consisting of an annular armature and an annular energization coil surrounding the output shaft to axially drive the pinion and a moveable contact of the switch unit in the axial direction the energization coil is disposed between the electric motor and the pinion with a commutator of the electric motor facing theenergization coil and a pigtail for one of the brushes is directly connected to the moveable contact. Also, the contacts of the switch unit are …
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, 1996 and granted August 19, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2018.
- 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.