Shock absorber with third fluid chamber

摘要

A number of embodiments of tubular type shock absorbers that permit improved damping characteristics in both directions by providing a third fluid chamber that surrounds the central shock absorber portion which defines the normal first and second fluid chambers separated by a piston connected by a piston rod to one of the two suspended elements. An annular piston is connected to the piston rod and displaces fluid from the third fluid chamber through a shock absorbing arrangement for augmenting the shock absorbing action of the centrally positioned shock absorber. Several embodiments of reservoir arrangements are disclosed.