Patents by Inventor Jaakko Martikainen

Jaakko Martikainen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4320640
    Abstract: A cylinder lock comprising a stationary cylinder housing and therein a turnable cylinder inclosing a plurality of tumbler discs turnable by means of the key of the lock. There is also a locking bar normally locking the cylinder non-turnably to the cylinder housing. When the tumbler discs have been brought to a releasing position, the locking bar can move closer to the center of the lock into a groove formed by alignment of peripheral recesses in the tumbler discs, and this releases the cylinder from its locking. In the lock there is also at least one composite tumbler disc including two parts, a first part and a second part, which are angularly adjustably connected to each other. The first part can be turned with a key. Within an adjustment sector the first part has such a small radial extension that it leaves the locking bar free to move radially to its cylinder-releasing position.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: March 23, 1982
    Assignee: Oy Wartsila AB
    Inventor: Jaakko Martikainen
  • Patent number: 4211097
    Abstract: A cylinder lock assembly is disclosed which comprises an outer cylinder having a front end with a key hole and a rear end with an end member. The outer cylinder encloses a rotatable inner cylinder. The end member and the outer cylinder are provided with mutually corresponding groove arrangements forming an axially fully interlocking attachment, between these two parts. The end member is insertable in a radial direction into the outer cylinder for attaching it thereto. The assembly also includes an attachment locking member engaging the outer cylinder and the end member in order to lock the end member to the outer cylinder in radial direction. The assembly can also be provided with a latch member arranged to move radially guided by the end member and the outer cylinder. The latch member may also serve as a fastening member of the assembly.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: July 8, 1980
    Assignee: Oy Wartsila AB
    Inventors: Jaakko Martikainen, Kurt Pousar