Vehicle front fork
US4438909A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1981 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Aug 27, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/516
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Herein disclosed in a front fork for a two-wheeled vehicle, in which a fork tube carrying a piston at its lower end is slidably fitted in a bottom casing filled with working oil, in which a seat tube fixed to the bottom portion of the bottom casing has its upper portion inserted into the fork tube, in which a check valve operating so as to be closed upon contraction of the fork and opened upon extension of the fork is carried by the lower end of the fork tube, in which a check valve operating so as to be opened upon the contraction of the fork and closed upon the extension of the fork is slidably fitted on the fork tube above the piston, in which as orifice is formed in the fork pipe thereby to provide communication between the inside and outside thereof, and in which a plurality of orifices are formed in the seat tube and are arranged in the axial direction of the same. The front fork tube constructed can improve the riding comfort and hold steering stability which are independent of the conditions of a road surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.