Safety device for a pneumatic membrane press
US6823778B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Oct 21, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B15/28
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A safety device for a pneumatic membrane press with door(s) comprises at least one unit for controlled establishment of a leak, each optionally associated with a cooperating opening/door assembly. Each unit includes an actuator module comprising an opening for receiving a key mounted on the door of the press and an actuating member whose position depends on the presence or not of the key in the opening; and a valve module comprising a sealing member for a circulation duct between an aperture in fluid connection with one or more inflation volume(s) pressurised when the press is pressurised and an aperture opening into the open air, the actuating member allowing the closure of the duct by the sealing member when the key is in the receiving opening and forcing the freeing of the duct when the key is not in the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.