Ejector dwell controller for a sorting apparatus
US4271968A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1978 |
| Grant date | Jun 9, 1981 |
| Priority date | — |
| Expiry date | May 5, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07C5/3425
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sorting apparatus for sorting a stream of articles and for ejecting unacceptably classified articles therefrom is characterized by an ejector dwell controller operative to control the duration of operation of an ejector element in accordance with the length of the article being ejected. The ejector is initiated when a predetermined lead-point on an article classified as unacceptable enters into an ejection zone proximal to the ejector and continues until a predetermined cut-off point thereon enters the ejection zone. An ejecting force is thus directed toward the same predetermined portion of each article being ejected without regard to the location of the defect causing the unacceptable classification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.