Dt Swiss Inc.

Dt Swiss Ag

Karsten Richter

Martin Walthert

Samuel Zbinden

A shock device for an at least partially muscle-powered two-wheeled vehicle, including at least one tube system having two telescopic tubes, the tube system extending from a first end to a second end. A suspension system is provided which is effective between the two ends and which biases the two tubes to an extended position. The suspension system includes a positive air spring and an independent, series-connected supplementary spring. Both the positive air spring and the supplementary spring bias the tube system to the extended position. The supplementary spring shows a lower breakaway force than does the positive air spring, and the ratio of the suspension travel of the positive air spring to the suspension travel of the supplementary spring is higher than 4:1.

Shock device in particular for bicycles

A shock device for an at least partially muscle-powered two-wheeled vehicle including a damping system having a damper cylinder and a moving piston disposed therein and connected with a piston rod extending from the damper cylinder, wherein the piston acts on a first damping chamber in the damper cylinder in the compression stage as the piston rod plunges in from a retracted base position into a plunged-in position. In the damping system, as the piston rod plunges in, damping fluid is transferred from the first damping chamber to an auxiliary chamber. A flow resistance for transferring the damping fluid into the auxiliary chamber is configured travel-dependent, depending on the piston position. The flow resistance for transferring the damping fluid into the auxiliary chamber over a first travel distance of the piston including the base position is smaller than over a second travel distance that is plunged in further.

Growing community of inventors

Biel, Switzerland

Karsten Richter