Method and apparatus for selectively drawing air from a plurality of vacuum channels
US6047733A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1997 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Jun 4, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86541
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A sequencing manifold for selectively drawing air from a plurality of vacuum channels, comprises, a fixed element having an outer surface and an internal cylinder, the fixed element further including a plurality of holes passing from the outer surface to the internal cylinder, the plurality of holes communicating with the plurality of vacuum channels. A piston is movably disposed within the internal cylinder and includes a hollow portion in communication with a device for drawing air. The piston is movable within the internal cylinder to align the hollow portion with a predetermined number of the plurality of holes for selectively drawing air from the predetermined number of the plurality of holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.