The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 1983
Filed:
Feb. 14, 1979
Paavo Piiroinen, Joensuu, FI;
Oy Wartsila AB, Helsinki, FI;
Abstract
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 set the lock mechanism in its correct cylinder-releasing position.