Patents by Inventor Paavo Lahtinen

Paavo Lahtinen 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).

  • Means for automatic closing and opening of the air intake duct of an oil burner
    Patent number: 4244685
    Abstract: The shaft of an oil burner drive motor carries a plate and means responsive to stopping of the shaft for moving the plate axially of the shaft in a direction to close the air intake duct and responsive to starting of the shaft for moving the plate axially in a direction to open the air intake duct.
    Type: Grant
    Filed: September 21, 1978
    Date of Patent: January 13, 1981
    Assignee: Nortti-Tuote Oy
    Inventor: Paavo Lahtinen
  • Electro-mechanical winnings distribution assembly for slot machines
    Patent number: 4226252
    Abstract: An electro-mechanical winnings distribution assembly for a slot machine in which a release coin operates a microswitch to produce a pulse which is fed to an electromagnet to pivot a winnings distribution lever against the action of a spring from a position at which pins on the lever move from a position in the marginal spaces of rows of coins in edge-to-edge relationship to a position out of the spaces.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: October 7, 1980
    Inventor: Paavo Lahtinen
  • Slot machine
    Patent number: D262042
    Type: Grant
    Filed: October 19, 1978
    Date of Patent: November 24, 1981
    Inventor: Paavo Lahtinen