Shock absorber for a bicycle

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 rheoloqical fluid;
• and
• a field generating device disposed at said throttling device for subjecting said field-sensitive rheoloqical fluid to a field of a predetermined strength for influencing a flow of said field-sensitive rheoloqical fluid through said throttling device;
• said throttling device having multiple damping ducts distributed about a periphery thereof, wherein a length of said damping ducts transverse to a flow direction is greater than a periphery of said damper piston.

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 rheoloqical fluid;
• and
• a field generating device disposed at said throttling device for subjecting said field-sensitive rheoloqical fluid to a field of a predetermined strength for influencing a flow of said field-sensitive rheoloqical fluid through said throttling device;
• wherein a maximum flow cross-section in the compression stage and a maximum flow cross-section in rebound stage are different;
• and
• further comprising a shim valve in said at least one damping duct.

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 rheoloqical fluid;
• and
• a field generating device disposed at said throttling device for subjecting said field-sensitive rheoloqical fluid to a field of a predetermined strength for influencing a flow of said field-sensitive rheoloqical fluid through said throttling device;
• wherein a flow cross-section of said at least one damping duct is defined by at least one transition section and at least one blocking section and/or at least one bypass section, and
• wherein at least a portion of the transition section and/or of the bypass section is adjustable at the cross-sectional area of the flow duct.

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 rheoloqical fluid;
• and
• a field generating device disposed at said throttling device for subjecting said field-sensitive rheoloqical fluid to a field of a predetermined strength for influencing a flow of said field-sensitive rheoloqical fluid through said throttling device,
• wherein said throttling device is disposed external of said damper housing in at least one relative position of said damper piston relative to said damper chambers.