Patents by Inventor Michael Lensak

Michael Lensak 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).

  • Safety device for detecting improper positioning of a ladder
    Patent number: 5740881
    Abstract: A safety device for detecting improper positioning of a ladder including an alarm connected to an energy source. A longitudinal and lateral level indicator switch are connected between the alarm and energy source with a first orientation for precluding power transfer to the alarm when the ladder is orientated in a safe disposition. The switches further have a second orientation for allowing power transfer to the alarm when the ladder is oriented in a dangerous disposition. Finally, an actuator switch is included for activating the device solely during use.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: April 21, 1998
    Inventor: Michael Lensak