Front fork position-dependent damping for bicycles and motorcycles
US11473644B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Dec 19, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2234/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A damper for a telescopic fork leg for a front fork of a vehicle, wherein the damper comprises a twin-tube cylinder and a piston rod assembly comprising a piston rod, wherein a first piston is attached to the inner end portion of the piston rod, wherein a second piston is attached to the piston rod between the first piston and an outer end portion of the piston rod, wherein the inner tube is provided with at least one outlet hole 19 through the wall of the inner tube, the outlet hole being positioned such that a sealing portion of the second piston at compression of the damper travels past at the at least one outlet hole, and wherein the inner tube is provided with at least one return hole through the wall of the inner tube, the at least one return hole being positioned such that it connects a chamber of the twin-tube cylinder to an outer volume of the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.