Cylinder lock
CA 1077288 A · Owner: Bahry, Abraham · Inventors: Bahry, Abraham; Dolev, Moshe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pin-tumbler in which each tumbler within the fixed part of the lock is made of two parts consisting mainly of pins with their respective housing, one pin telescopically slidable within the other both being urged by springs against the free space in the centre of the inner housing of the rotating cylinder into which the key can be lengthwise inserted, the outer walls of the outer pin forming between them a profile of one or more raised steps or depressions corresponding to the profile of the said insertible key which key has a profile of several adjacent notches, each notch having either raised steps or depressions or a flat surface symmetrically arranged around the central line of 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
- Granted May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 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.