Feeder tube
US5709296A · kind A · utility
Inventor
Key dates
| Filing date | Sep 11, 1996 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Sep 11, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G65/466
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to a feeder tube intended for bulk product, which comprises a cylindrical tube (2) in which there are inlet openings (8, 18) distributed along the length of the tube, a screw conveyor (3) disposed coaxially within the tube, rotating the tube about its axis, rotating the screw conveyor relative to the tube, moving the feeder tube in the lateral direction, and activators (9A, 9B, 19) for the bulk product, which activators are disposed on the tube in association with the inlet openings and form projections on the outer side of the tube. Each inlet opening has at least one first portion (10A, 10B, 20A, 20B) which is limited in the direction of rotation by a hole edge (11A, 11B, 21A, 21B) without an activator, and one second portion at the rear end of the first portion is limited by an activator (9A, 9B, 19).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.