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A shock absorber including a casing, a piston rod having a portion in the casing, a piston head mounted on the piston rod for dividing the casing into chambers on opposite sides thereof, a piston head having a central bore therein having an inner peripheral surface which flares outwardly at opposite

A shock absorber including a casing, a piston rod having a portion in the casing, a piston head mounted on the piston rod for dividing the casing into chambers on opposite sides thereof, a piston head having a central bore therein having an inner peripheral surface which flares outwardly at opposite ends thereof, and a plurality of interspersed grooves and ridges on the piston rod within the bore for permitting flow of liquid between the chambers to thereby provide fluid amplification through the spaces between the inner peripheral surface of the piston head and the outer peripheral surface of the piston rod.

대표청구항 ▼

A shock absorber comprising a casing, a piston rod having a first portion within said casing and a second portion outside of said casing, an end wall in said casing for mounting said piston rod for movement into and out of said casing, a piston head, first and second chambers on opposite sides of sa

A shock absorber comprising a casing, a piston rod having a first portion within said casing and a second portion outside of said casing, an end wall in said casing for mounting said piston rod for movement into and out of said casing, a piston head, first and second chambers on opposite sides of said piston head, compressible fluid in said first and second chambers, a bore centrally located in said piston head, first peripheral portion means on said piston head surrounding said bore for mounting said piston head on said first portion of said piston rod, groove means between said first portion of said piston rod and said piston head, and second outwardly flaring peripheral portion means on said piston head surrounding said bore and at opposite ends of said first peripheral portion means and of larger diameter than said first peripheral portion means and forming a continuation thereof for forming a fluid amplification orifice in combination with said first peripheral portion means and said first portion of said shaft and said groove means for passing said compressible fluid between said first and second chambers in both directions of movement of said piston rod.