Shredder with media detector
US9440238B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2013 |
| Grant date | Sep 13, 2016 |
| Priority date | — |
| Expiry date | Jun 28, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C18/0007
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A shredder includes a housing having an opening for the insertion of media to be shredded. A cutting assembly for the shredding of media is disposed in the housing. A media detector including an infrared emitter and an infrared sensor is disposed about the opening for the detection of the presence of media to be shredded in the opening. A controller is disposed in the housing and is in responsive communication with the media detector for controlling the operation of the cutting assembly. The controller is programmed with a dynamic media detection threshold that is at least in part passed upon an emission sensed value and a background sensed value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.