Patents by Inventor Pekka Tapio Tourunen

Pekka Tapio Tourunen 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).

  • Hydraulic shock absorber
    Patent number: 4044865
    Abstract: A hydraulic shock absorber includes a cylinder, a piston therein, a sleeve surrounding the cylinder wall and provided with an internal thread, the crest of which engages the cylinder wall, possibly a storage chamber for liquid provided outside the cylinder and connected to the slot of the thread, at least one cylinder chamber in communication with the slot of the thread through at least one narrow opening which may be throttled more or less by the crest of the thread, when the cylinder and the sleeve are rotated mutually.
    Type: Grant
    Filed: May 25, 1976
    Date of Patent: August 30, 1977
    Assignee: AB Mecman
    Inventor: Pekka Tapio Tourunen