Resources Contact Us Home
Articulated seating mechanism

Image Number 3 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
Process for producing a carbon-comprising support
Sparse network almanac
Nonvolatile semiconductor memory device and method for manufacturing the same
Mirac proteins
SONOS stack with split nitride memory layer
Software self-checking systems and methods
Data storage device with surface ornamentation
  Randomly Featured Patents
Wavefront refractions and high order aberration correction when wavefront maps involve geometrical transformations
Control system for controlling the diaphragm in a photographic camera
Safety penetrating instrument with penetrating member protected after penetration to predetermined depth
Semiconductor IC device having a memory and a logic circuit implemented with a single chip
Reduced oxides having large thermoelectric ZT values
Audio supply apparatus
Tool for removing plant growth from peripheral zones of sprinkler heads
Abrasive finishing with lubricant and tracking
Page turner for sheet music
Edgewise winding method and edgewise winding apparatus