Holder fixed by vacuum for industrial use
US4708381A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1986 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Apr 4, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66C1/0231
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A holder for industrial use attachable by vacuum comprises a rigid backpiece (3), a flexible intermediate element (2), and a central distance-maintaining element (1). The intermediate element (2) comprises a comparatively rigid sealing ring (9) with a sealing lip (13), which in use abuts against the element held fixed and with its opposite side against the backpiece (3). The central distance-maintaining element (1) is rigidly connected to the backpiece (3). The sealing ring (9) of the intermediate element (2) is movably and outwardly resiliently biassed in a direction away from the back piece. When the side of the sealing ring with the lip is unloaded and the ring is pressed outwardly, a vacuum valve (14) is automatically closed by the intermediate element, which valve opens when the holder is pressed against the object held fixed whereby the holder becomes attached by the sucking action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.