Hydraulic press
US4080139A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1976 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Dec 20, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B5/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A press for molding large sheets around a forming surface which includes an elastic press pad, a first frame member on the side of the press pad away from the working surface thereof, a pressure cell formed between the press pad and the first frame member, the pressure cell containing an elastic diaphragm in contact with the press pad, a second frame member formed in a generally L-shaped configuration to encompass and hold an annular bead of the elastic diaphragm, mounting bolts for adjusting the positioning of the second frame member with respect to the first frame member, and channels in the first frame member for supplying a pressure medium to a pressure zone between the first and second frame members and the elastic diaphragm. In addition, the annular bead of the diaphragm is provided with a slot that contains a sealing ring, and the first frame member may be separated from contact with the second frame member by spacers to allow for pressure medium communication between the slot and the pressure medium zone between the first and second frame members and the elastic diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.