Self-cleaning gravimetric and volumetric dosing apparatuses
US12042956B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 2020 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Apr 5, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/9238
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A self-cleaning dosing apparatus includes a material hopper for containing pellets of material, a feed screw, a first material outlet through which pellets of material fall by gravity onto a first end of the feed screw for the feeding of pellets to a process machine. A second material outlet is located beneath the first end of the feed screw, with a slide gate blocking the second material outlet. A pneumatic piston is provided for pulling the slide gate to unblock the second material outlet, and a Venturi pump is located under the second material outlet for pulling pellets through the second material outlet when the slide gate is opened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.