Clamping device, in particular a machine vise
US3941362A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Sep 9, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H25/183
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A clamping device having a hollow spindle screwable in a stationary vise part and a pressure rod axially slidable in the hollow spindle for exerting clamping pressure. A mechanical or hydraulic power amplifier is arranged in a cylindrical housing connected to the hollow spindle. The secondary or driven member of the power amplifier acts onto a pressure rod. The primary member of the power amplifier is acted upon by a driving element which itself is arranged in a compressed air cylinder adjoining the power amplifier housing. An additional mechanical or hydraulic power amplifier is arranged in the compressed air cylinder between the compressed air piston and the aforementioned primary member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.