Anti-jam device that restricts the number of paper sheets each time
US7584912B1 · kind B1 · utility
3Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 20, 2008 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Oct 20, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C2018/164
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An anti-jam device that restricts the number of sheets each time is disclosed. It comprises a movable element and a fixture element disposed above the rotary shafts. The movable element is a pair of rods parallel to the rotary shafts, with both ends in the preformed holes on the fixing element. When the shredder is in its auto mode, the passage width defined by the gap between the rods is exactly the maximum thickness of paper that can be feded each time. When the shredder is in the rev mode, the rods are pushed by paper upwards to form a larger gap, allowing the paper to be backed out easily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.