Patent ID: 8800730

Claim:
A shock absorber for a muscle-powered or partially muscle-powered vehicle, the shock absorber comprising: a damper device having a damper housing with a first damper chamber and a second damper chamber formed therein; at least one damper piston separating said first and second damper chamber from one another, and a piston rod connected to said damper piston and extending from said damper piston and through said second damper chamber out of said damper housing; at least one throttling device; said piston rod having a flow duct formed therein and fluidically connecting said first and second damper chambers to one another, extending through said piston rod and to said at least one throttling device; said flow duct including at least one damping duct at said throttling device provided, said flow duct containing a field-sensitive rheological fluid; and a field generating device disposed at said throttling device for subjecting said field-sensitive rheological fluid to a field of a predetermined strength for influencing a flow of said field-sensitive rheological fluid through said throttling device; and at least one spring device including a first and at least one second spring chamber provided with a compressible medium.