Slipping cylinder lock
CA 1163819 A · Owner: Oy Wartsila Ab · Inventors: Piiroinen, Paavo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cylinder lock comprising a fixed cylinder housing and therein a turnable cylinder and a lock mechanism locking the cylinder to the cylinder housing. The turning of the cylinder is performed by means of the key of the lock after the key has set the lock mechanism in a cylinder-releasing position. Force transmission from the key to the cylinder is arranged to take part in a first, stage of the function of the lock through a slipping clutch so, arranged that when the turning force of the key exceeds a certain value, the elements enclosed in the cylinder and directly connected to the key are able to slip relatively to the cylinder in the turning direction of the key, in case the key has not …
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 March 20, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 2001.
- 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.