Fake head assembly
US10814267B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 12, 2017 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Aug 15, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/40011
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present disclosure relates a fake head assembly including a fake head body having an engage face, a first vacuum suction hole configured to be connected to an evacuating device to perform an evacuation, an adsorption portion having an adsorption surface, a plurality of first vacuum holes inside the fake head body, each first vacuum hole including a first end on the adsorption surface and a second end on the engage face, the plurality of first vacuum holes being arranged in order in a first direction of the fake head assembly; a shunt device detachably connected to the fake head body, the shunt device having a plurality of evacuating slots which extend in the first direction and have different extension lengths; the first vacuum suction hole being closable by the shunt device and selectively communicated with one evacuating slot, so as to be communicated the second end of at least some of the first vacuum holes via the one evacuating slot; and a connecting device for connecting the shunt device to the engage surface of the fake head body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.