Spring fork

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8393448
APP PUB NO 20100219607A1
SERIAL NO

12161743

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A spring fork, in particular for bicycles, with a suspension system and a hydraulic damping system, includes a compression stage damping system (6) for a spring deflection process and a traction stage damping system (5) for a rebound process. At least one piston (3, 16, 27) is provided, which is located in the cylinder (2), and at least one connecting channel (17, 17a) is provided which connects the cylinder chambers located on both sides of the piston and is intended for the overflow of hydraulic oil (21). The compression stage damping system (6), which is activated during the spring deflection process, can be blocked by closing the connecting passage (lockout). At least with the compression stage damping system (6) blocked and, if appropriate, also with the traction stage damping system (5) also blocked, a bypass channel (11, 20, 20a) which has a reduced cross-section in comparison to the connecting channel (17, 17a) is opened. As a result, the strong damping effect is largely maintained in particular during the rocking peddling action, but on the other hand, automatic return of the fork to its initial position (sag position) is made possible.

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Patent Owner(s)

Patent OwnerAddress
GUSTAV MAGENWIRTH GMBH & CO KGSTUTTGARTER STR 48 BAD URACH 72574

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kunstle, Reiner Metzingen/Neuhausen, DE 3 9
Lude, Dirk Metzingen, DE 7 127

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