Combined metering apparatus
US5767453A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Apr 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01G19/393
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention provides a combined metering apparatus in which the convey efficiency of a target metering object from an upper-stage hopper to a lower-stage hopper is improved. For this purpose, the direction in which a bottom plate 33 of a pool hopper 25 is moved to open the lower open surface of a cylindrical body 26 and the direction in which a bottom plate 43 of a lower-stage metering hopper 35 is moved to close the lower open surface of a cylindrical body 36 are set the same. Also, the direction in which the bottom plate 43 of the metering hopper 35 is moved to open the lower open surface of the cylindrical body 36 and the direction in which a bottom plate 59 of a lower-stage timing hopper 50 is moved to open the lower open surface of a cylindrical body 51 are set the same. Hence, when the bottom plate of the lower-stage hopper is moved in the closing direction, the bottom plate of the upper-stage hopper is moved in the opening direction almost simultaneously, so that the target metering object in the upper-stage hopper can be transferred to the lower-stage hopper efficiently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.