Controlled spring suspension for riding device

Claim 1

IN A RIDER ACTUATED ROCKING DEVICE HAVING A STATIONARY BASE ASSEMBLY AND A SEAT ROCKABLY SUPPORTED THEREON, SAID SEAT HAVING A HOLLOW BODY WITH FRONT AND REAR PORTIONS, A RESILIENT SUSPENSION UNIT CONNECTING SAID SEAT TO SAID BASE ASSEMBLY AND COMPRISING, BRACKET MEANS MOUNTED ON SAID BASE ASSEMBLY, RIGID ATTACHING MEANS CONNECTED TO THE FRONT AND REAR PORTIONS OF SAID HOLLOW BODY, FIRST RESILIENT MEANS MOUNTED BETWEEN SAID BRACKET MEANS AND SAID ATTACHING MEANS AT THE FRONT PORTION OF SAID BODY, SECOND RESILIENT MEANS MOUNTED BETWEEN SAID BRACKET MEANS AND SAID ATTACHING MEANS AT THE REAR PORTION OF SAID BODY, SAID FIRST AND SECOND RESILIENT MEANS EXTENDING IN A FORE AND AFT DIRECTION IN A SUBSTANTIALLY HORIZONTAL PLANE AND WITHIN THE OVER-ALL LENGTH OF THE SEAT PORTION WHEN THE SEAT IS IN AN UNACTUATED POSITION, TORQUE RESTRAINING MEANS ACTING BETWEEN SAID BRACKET MEANS AND SAID ATTACHING MEANS TO CONFINE THE RELATIVE MOVEMENT BETWEEN THE SEAT AND THE BRACKET MEANS TO A SUBSTANTIALLY VERTICAL PLANE PASSING THROUGH THE LONGITUDINAL AXIS OF THE SEAT, AND SAID RESILIENT SUSPENSION UNIT INCLUDING SAID BRACKET MEANS, SAID ATTACHING MEANS, SAID FIRST AND SECOND RESILIENT MEANS AND SAID TORQUE RESTRAINING MEANS BEING LOCATED WITHIN THE BODY OF SAID SEAT WHEREBY THE RESILIENT SUSPENSION UNIT IS SUBSTANTIALLY CONCEALED BY SAID SEAT.