Resources Contact Us Home
Articulated seating mechanism

Image Number 13 for United States Patent #7234772.

An articulated seating mechanism including a rocker base, a seat plate, and a pair of side rails, each having an arcuate side. The side rails may be disposed downwardly from the seat plate or upwardly from the rocker base. First and second arcuate gear portions are disposed on the arcuate side of each of the side rails and a first and second substantially flat or linear gear racks are affixed either to the underside of the seat plate or the upper side of the rocker base, so as to bring the linear gears and the arcuate gears into intermeshing relationship. A back support is pivotally connected to the seat plate and to first and second back links, and the back links are pivotally connected to the rocker base to provide a rocking motion of the seat plate and a dynamic synchronous adjustment of the angular variation between the seat plate and the back support. The linear gear racks move in a tangent to the arcuate gear portions to provide a moving fulcrum during rocking movements. No springs or other force means are necessary to assist in moving easily from a reclined position to task.

  Recently Added Patents
Adaptive switch mode LED system
Method for producing interferon alpha 5
Topology arrangement for achieving reliable communication in wireless automotive networks
Prevention and reduction of blood loss
Cartridge for conducting a chemical reaction
Tomlinson Harashima precoding with additional receiver processing in a multi-user multiple-input multiple-output wireless transmission system
Variety corn line NPAA2675
  Randomly Featured Patents
Combination utensil and lid for packaged comestibles
Current-biased potentiometric NOx sensor for vehicle emissions
Adaptable end effector for atomic force microscopy based nano robotic manipulators
Recombinant canine thyroid stimulating hormone and methods of production and use thereof
Coil transducer
Child's bicycle
Non-aqueous electrolytic secondary cell
Swing speed analyzer
Fatigue resistant large hollow rotor blade for underwater energy converter
Tamper evident notched sealing envelope