Vibration attenuator seat

A vibration attenuator seat comprising:

• a seat assembly having first and second spaced apart ends;
• a base assembly having first and second spaced apart ends and a center portion disposed between the ends;
• antifriction means connecting the seat assembly to the base assembly and supporting the seat assembly above the base assembly for predetermined ultra low coefficient of friction horizontal linear movement of the seat assembly relative to the base assembly;
• first spring means connected at one end to the first end of the seat assembly and connected at the other end to the center portion of the base assembly disposed in a preloaded, closed-coil condition to prevent an increase in the distance of the first end of the seat assembly from the center portion of the base assembly until first predetermined load in a first direction is exceeded and to allow an increase in the distance of the first end of the seat assembly from the center portion of the base assembly in a second direction opposite the first direction;
• second spring means connected at one end to the second end of the seat assembly and connected at the other end to the center portion of the base assembly disposed in a preloaded, closed-coil condition to prevent an increase in the distance of the second end of the seat assembly from the center portion of the base assembly until a second predetermined load in the second direction is exceeded and to allow an increase in the distance of the second end of the seat assembly from the center portion of the base assembly in the first direction.

A vibration attenuator seat comprising:

• a seat assembly having first and second spaced apart ends and a shaft portion connecting the ends;
• a base assembly having first and second spaced apart ends and a center portion disposed therebetween;
• antifriction means disposed in and encircled by the base assembly, said antifriction means encircling the shaft portion of the seat assembly and providing a predetermined ultra low coefficient of friction between the shaft portion and the base assembly for horizontal linear movement of the seat assembly relative to the base assembly;
• first spring means connected at one end to the first end of the seat assembly and connected at the other end to the center portion of the base assembly disposed in a preloaded, closed-coil condition to prevent an increase in the distance of the first end of the seat assembly from the center portion of the base assembly until a first predetermined load in a first direction is exceeded and to urge the first end of the seat assembly toward the center portion of the base assembly with a first predetermined low spring force until the closed-coil condition is regained, said first spring means including means for allowing an unrestricted increase in the distance of the first end of the seat assembly from the center portion of the base assembly in a second direction opposite the first direction;
• second spring means connected at one end to the second end of the seat assembly and connected at the other end to the center portion of the base assembly, disposed in a preloaded, closed-coil condition to prevent an increase in the distance of the first end of the seat assembly from the center portion of the base assembly until a second predetermined load in a second direction is exceeded and to urge the second end of the seat assembly toward the center portion of the base assembly with a second predetermined low spring force until the closed-coil condition is regained, said first spring means including means allowing an unrestricted increase in the distance of the second end of the seat assembly from the center portion of the base assembly in the second direction.