Patent ID: 6789790
Filing Date: 2004-09-14
Classification: F16F

Abstract:
A device for reducing the resonant vibrations of a helical spring having two opposite ends which are movable toward and away from one another between a first condition corresponding with a condition at which the spring is in static equilibrium and a second condition at which the spring is more compressed than in its first condition and wherein the helical spring has a coil mid-section located approximately midway between the two ends of the spring, the device comprising:means associated with the coil mid-section of the spring for limiting the movement of the coil mid-section away from one end of the spring to about the distance between the coil mid-section and said one end when the spring is disposed in its first condition, and said associated means includes means for acting between said one end of the coil and the coil mid-section for limiting the movement of the coil mid-section as aforesaid; wherein the associated means includes tension means connected between said one end of the spring and the coil mid-section for preventing the coil mid-section from being displaced relative to said one end beyond a length equal to about the distance between the coil mid-section and said one end when the spring is disposed in its static equilibrium condition while not obstructing the movement of the spring ends toward and away from one another between the first and second conditions; the tension means includes a substantially inelastic cable bound between said one end of the spring and the coil mid-section; and wherein the spring includes a member associated with said one end of the spring, and the member includes a central body and a series of pins projecting radially from the central body, and the substantially inelastic cable is threaded between the series of pins and the coil mid-section for limiting the movement of the coil mid-section away from one end of the spring as aforesaid.