Patents by Inventor Robert O. Braesch

Robert O. Braesch 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).

  • Air lifting and balancing unit
    Patent number: 5556077
    Abstract: An air lifting and balancing unit including a cylinder, a piston in the cylinder, a ball screw affixed to the piston, a ball nut mounted for rotation on the ball screw, a drum mounted on the ball nut, a chain driven by the drum, and centrifugally actuated brakes mounted on the drum for stopping rotation of the drum when the drum exceeds a predetermined acceleration either due to a loss of load or to a loss of air pressure applied to the piston, and a pneumatic circuit in communication with the cylinder for providing air pressure thereto which applies a force on the piston which is at a substantially constant incremental value in opposition to the force exerted by the load applied to the piston through the chain and the drum and the ball screw regardless of variations in said air pressure to thereby cause the speed of the chain to remain substantially constant.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: September 17, 1996
    Assignee: Columbus McKinnon Corporation
    Inventors: Robert O. Braesch, Peter L. Hong, Thomas A. Mefferd, Michael D. Olson
  • Air lifting and balancing unit with constant force pneumatic circuit
    Patent number: 5520368
    Abstract: An air lifting and balancing unit including a cylinder, a piston in the cylinder, a ball screw affixed to the piston, a ball nut mounted for rotation on the ball screw, a drum mounted on the ball nut, a chain driven by the drum, and centrifugally actuated brakes mounted on the drum for stopping rotation of the drum when the drum exceeds a predetermined acceleration either due to a loss of load or to a loss of air pressure applied to the piston, and a pneumatic circuit in communication with the cylinder for providing air pressure thereto which applies a force on the piston which is at a substantially constant incremental value in opposition to the force exerted by the load applied to the piston through the chain and the drum and the ball screw regardless of variations in said air pressure to thereby cause the speed of the chain to remain substantially constant.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: May 28, 1996
    Assignee: Columbus McKinnon Corporation
    Inventors: Robert O. Braesch, Thomas A. Mefferd, Michael D. Olson
  • Pneumatic control circuit for applying constant force
    Patent number: 5517821
    Abstract: An air lifting and balancing unit including a cylinder, a piston in the cylinder, a ball screw affixed to the piston, a ball nut mounted for rotation on the ball screw, a drum mounted on the ball nut, a chain driven by the drum, and centrifugally actuated brakes mounted on the drum for stopping rotation of the drum when the drum exceeds a predetermined acceleration either due to a loss of load or to a loss of air pressure applied to the piston, and a pneumatic circuit in communication with the cylinder for providing air pressure thereto which applies a force on the piston which is at a substantially constant incremental value in opposition to the force exerted by the load applied to the piston through the chain and the drum and the ball screw regardless of variations in said air pressure to thereby cause the speed of the chain to remain substantially constant.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: May 21, 1996
    Assignee: Columbus McKinnon Corporation
    Inventors: Robert O. Braesch, Peter L. Hong, Thomas A. Mefferd, Michael D. Olson
  • Air lifting and balancing unit
    Patent number: 5439200
    Abstract: An air lifting and balancing unit including a cylinder, a piston in the cylinder, a ball screw affixed to the piston, a ball nut mounted for rotation on the ball screw, a drum mounted on the ball nut, a chain driven by the drum, and centrifugally actuated brakes mounted on the drum for stopping rotation of the drum when the drum exceeds a predetermined acceleration either due to a loss of load or to a loss of air pressure applied to the piston, and a pneumatic circuit in communication with the cylinder for providing air pressure thereto which applies a force on the piston which is at a substantially constant incremental value in opposition to the force exerted by the load applied to the piston through the chain and the drum and the ball screw regardless of variations in said air pressure to thereby cause the speed of the chain to remain substantially constant.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: August 8, 1995
    Assignee: Columbus McKinnon Corporation
    Inventors: Robert O. Braesch, Peter L. Hong, Thomas A. Mefferd, Michael D. Olson