Patents by Inventor Mauricio Anibal Lizama Troncoso

Mauricio Anibal Lizama Troncoso 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: 6533304
    Abstract: The present invention provides a hydraulic powered wheelchair pivotable from a sitting position to a standing position with minimal user effort. The pivoting frame assembly includes a rigid horizontally arranged wheel support structure, a single vertical extending member secured to the wheel support structure and centered between the wheels, and a pivoting frame linkage assembly pivotably connected at the upper end of the vertically extending member. A hydraulic jack rests on the wheel support structurs, and is connected at the other end to the seat support members of the pivoting assembly. A user of the wheelchair pivots a lever assembly to raise the jack, and thus raise the chair to the standing position. An electric buzzer system is integrated with the wheelchair, and an alarm informs the operator when the chair has reached the standing position.
    Type: Grant
    Filed: December 2, 2000
    Date of Patent: March 18, 2003
    Assignee: University of Puerto Rico
    Inventors: Mauricio Anibal Lizama-Troncoso, David Serrano-Acevedo, Dennis Martell-Solares, Eduardo F. Carlo-López, Eduardo Bravo-Rios
  • Publication number: 20010024025
    Abstract: The present invention provides a hydraulic powered wheelchair pivotable from a sitting position to a standing position with minimal user effort. The pivoting frame assembly includes a rigid horizontally arranged wheel support structure, a single vertical extending member secured to the wheel support structure and centered between the wheels, and a pivoting frame linkage assembly pivotably connected at the upper end of the vertically extending member. A hydraulic jack rests on the wheel support structurs, and is connected at the other end to the seat support members of the pivoting assembly. A user of the wheelchair pivots a lever assembly to raise the jack, and thus raise the chair to the standing position. An electric buzzer system is integrated with the wheelchair, and an alarm informs the operator when the chair has reached the standing position.
    Type: Application
    Filed: December 2, 2000
    Publication date: September 27, 2001
    Inventors: Mauricio Anibal Lizama-Troncoso, David Serrano-Acevedo, Dennis Martell-Solares, Eduardo F. Carlo-Lopez, Eduardo Bravo-Rios
  • Patent number: 6227981
    Abstract: The present invention contemplates an improved ball ramp assembly that enables even the most severely handicapped bowler to guide and accelerate a bowling ball toward the intended bowling pins. The bowling ramp assembly includes a ramp having a ball guide defining a ball path along the ramp, a base coupled to a proximal end of the ramp for supporting the ramp, a ball release coupled to the ramp for selectively controlling travel of the ball along the ramp, and a positioning assembly coupled to the ramp for adjusting the orientation of the ramp. The ball release includes a ball stopping member that moves between a ball blocking position and a ball releasing position. The positioning assembly includes at least one motor coupled to the ramp and a wheel located at the distal end of the ramp. The ball release and positioning assembly are both controlled by switches which may be located remotely from the ramp.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: May 8, 2001
    Assignee: University of Puerto Rico
    Inventors: Mauricio Anibal Lizama Troncoso, David Serrano, Joel Rivera, José Soto, Raul Jordan, Lorenzo Detres