Shock absorber using electro-viscous fluid
US5000299A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Jan 31, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M171/001
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A shock absorber including a main housing body having a cylindrical portion and closure portions closing the open ends of the cylindrical portion, an inner cylindrical member disposed within the main body and cooperating therewith to define an inner cylinder chamber and an outer annular space, and a piston slidably received within the cylinder chamber, so as to divide the cylinder chamber into two fluid chambers filled with an electro-viscous fluid. The fluid chambers communicate with each other through communication passage which includes a portion formed within the annular space. An operating and a balancing rod are secured to the piston and extend slidably through the respective two closure portions of the main body. The shock absorber includes at least one pair of electrodes one of which consists of a portion of the cylindrical portion of the main body and the other of which consists of a portion of the inner cylindrical portion. The electrodes are disposed so as to define at least a portion of the communication passage, for applying a voltage to the fluid in that portion of the passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.