Hydraulic clamp
US4932640A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 1989 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Jul 10, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B5/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a hydraulic clamp adapted to fixedly secure an object such as a die, a workpiece and the like strongly to a machine tool such as an injection molding machine, a press machine and the like by means of multiplication action of a wedge, PA1 a drive chamber is formed in a clamp housing with its front end open and a clamp arm is inserted in the drive chamber to be vertically pivotable, PA1 a driving wedge is inserted between a wedge retaining surface defining an upper part of the drive chamber and a driven portion formed at a top of the clamp arm from behind and adapted to be moved longitudinally reciprocatively by means of a hydraulic cylinder, and PA1 a sliding shuttle member is interposed between the sliding contact surfaces of the driving wedge and of at least one of the wedge retaining surface and the driven portion to be slidable in a forward and backward direction within a given range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.