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:
Jan. 09, 1979
Filed:
Dec. 27, 1976
Ilkka Pusa, Joensuu, FI;
Oiva Hurskainen, Joensuu, FI;
Oy Wartsila AB, Helsinki, FI;
Abstract
A method for the production of a cylinder lock with a fixed cylinder housing, a turnable cylinder therein and a number of locking discs turnable by the key of the lock; a locking bar operable in the radial direction by the locking discs locks the cylinder to the cylinder housing. The method provides the lock cylinder with locking discs without peripheral recesses allowing the opening of the lock; the locking discs are turned with a key member into an opening position defined by the key member; and a joint groove corresponding to the form of the locking bar is machined into the set of locking discs at the position of the locking bar. Each of the locking discs is provided at the right position with a peripheral recess allowing the opening of the lock. The operation can be repeated with other key members for providing the lock mechanism with a desired number of opening combinations usuable in mastered locking systems.