| SHRED-IT INTERNATIONAL INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120006920 | STAGED PAPER SHREDDER - This invention relates to a paper shredder. A first stage shredder accepts paper from a hopper. The first stage shredder comprises two knife shaft assemblies with a plurality of sequentially oriented knives and spacers on hexagonal shafts. A second stage shredder accepts the output of the first stage shredder. The second stage shredder has two counter rotating shafts with saw tooth disk knives and separating spacers and cuts the paper finer than that of the first stage shredder. A third stage shredder may be connected to the second stage shredder providing even further paper size reduction. Each of the second stage shredder and third stage shredder may be disengaged from the shredding process. The first stage, second stage and third stage shredders are interlocked electronically so that if any stage suffers a jam the preceding stages are stopped. The jammed stage is reversed to remove the jam and all preceding stages stop until a signal is provided to restart. Optical sensors are provided between each stage, which signal if too much paper is being passed from one stage to another. If this is the case the preceding stages automatically stop until such time as they receive an electronic signal indicting the overload situation has been relieved. | 01-12-2012 |
| 20100162778 | SECURITY COVER FOR A CYLINDER LOCK - There is provided a security cover for a cylinder lock. The security cover may comprise a top wall and a peripheral side wall and may be adapted to be secured over an end of the lock and may include a key slot extending through the top wall and positioned to align with the lock cylinder when the cover is secured over the lock. There is also provided a key for use with the cover and a method for securing a cylinder lock. | 07-01-2010 |
