Lockable door hinge
CA 1079913 A · Owner: Lombardi, Adolfo · Inventors: Lombardi, Adolfo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, A lockable door hinge is described which is of the usual butt hinge type with a pair of pivoting butt plates. One of these plates contains a vertically slidable bolt which moves into and out of engagement with at least one projecting abutment flange on the other butt plate. By vertical positioning of the bolt the door may, swing freely or it may be limited in its swinging movement to a closed position or one or more partially open positions. The bolt may also be used to hold the door in an open position.
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
- Granted June 24, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 1997.
- 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.