Automatic pneumatic feeder
US4501518A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1982 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Dec 10, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G53/28
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pneumatic material transference apparatus consisting of a closed hopper having a material inlet pipe at the top, a material outlet pipe at the bottom ending in a discharge chamber and a pneumatic operating system consisting of a valve chamber operatively connected to a control pipe, the upper end of which opens into the top of the hopper, the valve chamber having two valve seats, a valve disc associated with each valve seat, the valve discs being connected to each other by a valve stem such that when one disc is closed, the other one is open, a pressurized air supply chamber in cooperation with one of the valve discs and a vacuum chamber in cooperation with the other of the valve discs, an induction throat between the pressurized air supply and the discharge chamber, and a nozzle within the induction throat having an opening within the vacuum chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.