Controllable shock absorber for motor vehicles
US5462143A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1994 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Feb 17, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/512
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A shock absorber for an automotive vehicle includes a damping cylinder having a cylinder chamber containing damping fluid; a damping piston axially slidably received in the damping cylinder and dividing the cylinder chamber into first and second work chambers; pressure-responsive valves mounted on the damping piston for controlling the flow of fluid through the damping piston in the pressing and pulling phases; an axially hollow piston rod affixed to the damping piston and extending axially in the damping cylinder; an outer tube coaxially surrounding the damping cylinder and defining an equalizing chamber therewith; and a bottom valve assembly provided in the second work chamber. The equalizing chamber is in communication with the second work chamber through the bottom valve assembly. There are further provided a first bypass channel coupling the first and second work chambers with one another through the hollow piston rod; a second bypass channel coupling the second work chamber with the equalizing chamber by circumventing a bottom valve of the bottom valve assembly; and a setting device for controlling the first and second bypass channels as a function of relative rotary displace…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.