Handcuffs
CA 2135137 A1 · Owner: Wakefield, David · Inventors: Wakefield, David; Cross, Geoffrey William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Handcuffs, A rigid handcuff (Figure 3) includes a pair of separate lockable bracelet members (16, 18) each having a respective plate-like extension (30 32)each of which abuts the other at end faces along a line normal to a longitudinalaxis of the handcuff the line and the axis lying in the common plane of the bracelet members. A respective plate-like connector (38) overlies the abutted extensions (30, 32) with the outer ends of each connector (38) abutting against a respective bracelet member (16, 18). The extensions (30 32) and the connectors, (38) ensure that the bracelet members are restrained against all movement relative to one another thereby providing a rigid handcuff assembly. A …
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 November 4, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2016.
- 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.