Impact force shaping head
US4688646A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1983 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Mar 16, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/512
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An impact force shaping head includes an elongated casing having an interior wall, an open end and a closed end and contains a liquid. A piston is slidingly mounted within the casing and extends longitudinally beyond the open end of the casing. The piston sealingly engages the interior wall of the casing to define a liquid-filled first chamber between the piston and the closed end of the casing. A reservoir contains liquid and a conduit connects the first chamber with the reservoir. A control valve controls the flow of liquid through the conduit. The control valve is operative in response to changes in the pressure of the liquid contained in the first chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.