Vacuum operated material transfer system
US3955714A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1975 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Jun 12, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/3109
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a material transfer system, a substantially airtight hopper is rotatably supported at the top of an upright column which is in turn supported by a base. The hopper may be divided into a plurality of compartment sections, and inlet and outlet ports are provided for each hopper compartment. A vacuum pump is connected to the interior of the hopper through the column. A hose is adapted for connection to one of the inlet ports to direct material into the hopper, and sealing apparatus is provided for closing the remainder of the inlet ports. Each discharge port is provided with a chute for receiving and transferring material under the action of gravity. Drain apparatus is provided for receiving liquid from each discharge port. Each discharge port is further provided with structure for sealing the discharge port in response to the presence of vacuum within the hopper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.