Variable dashpot for motor vehicles
US5303803A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1991 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Apr 5, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/24
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A variable dashpot for motor vehicles A cylinder (2) full of vibration-suppressing fluid accommodates a piston (3). The piston is provided with vibration-suppressing valves, is fastened to a piston rod (8), and separates the cylinder into two compartments. The compartments communicate through a bypass. The cross-section of the bypass can be adjusted with a component (11) comprising a stator (12) with windings (13) and an electric motor (10) with a rotor (17). The improvement comprises making it possible to continuously and highly dynamically vary the cross-section of the bypass in a dashpot of the same size. This is attained in that the stator windings are accommodated directly in a recess (9) in the piston rod, which is made out of a material that can be magnetized, and the rotor is provided with permanent magnets (22), activates the adjusting component (11), and is accommodated in a bore in the stator (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.