| 20110258771 | SEAT TILT MECHANISM FOR CHAIRS USED BY PEOPLE WITH DISABILITIES - This application provides a mechanism that consists of right and left mounting bases that in different embodiments are adapted for mounting on a variety of different chairs. These mechanisms have roller tracks that have been designed on a radius with the fulcrum or pivot point positioned very close to where the center of mass is located, for a wide spectrum of different sized people from children through over-sized adults, to achieve varying degrees of movement. On the inside of the left and right mounting bases are curved slots that are parallel to the curvature of the roller tracks where guide members on the front and rear mounting brackets keep the seat and back rest from coming off the chair. There are front and rear rollers that traverse within the roller tracks that pivot on axles in the front and rear mounting brackets. In the curved slots on the sides are adjustable stop pins that limit the tilt or travel of the seat and back rest. A rack and spur gear mechanism is incorporated to manually adjust the position of the seat and back rest of the chair by rotating a crank handle. By removing the rack and spur gear mechanism and adjusting the stop pins the device will perform as a rocking chair. Turning a friction locking knob will lock the seat and back into a stationary position. | 10-27-2011 |
