Ratchet system for motorcycle helmet shield
CA 2111780 A1 · Owner: Hong Jin Crown America, Inc. · Inventors: Hong, Scott S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ratchet system for a motorcycle or bicycle helmet shield has a one-piece face shield with end tabs having a ring of upraised teeth and additional radially extending teeth along a curved edge. The ratchet system also has a pair of helmet-mounted side plates, each having a leaf spring with a central point that engages in grooves between the radially extending teeth of the end tabs. The end tabs are pivotally mounted on the side plates. The ratchet system also has shield covers having a set of surface teeth to engage with grooves between the upraised teeth of the end tabs. The ratchet system may also include bolts for attaching the system to the helmet for, holding the covers against the end …
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 17, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2015.
- 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.