Tension-compression liquid spring unit
US4611794A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1981 |
| Grant date | Sep 16, 1986 |
| Priority date | — |
| Expiry date | Apr 3, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/54
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A liquid spring unit operable in both tension and compression includes a liquid spring having a cylinder, a piston, a seal between the cylinder and piston, and compressible liquid in the cylinder. A cylinder extension has diametrically opposed slots therein. A sleeve slidably mounts the cylinder and has diametrically opposed slots in alignment with the slots in the cylinder extension. A link is attached to the piston and has pintles received in the pairs of aligned slots. A first load-receiving member is attached to the sleeve and a second load-receiving member bears on the link to force the piston into the cylinder when the load-receiving members are moved toward each other and causes the cylinder to be moved onto the piston when the load-receiving members are pulled away from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.