A shredder (1) is provided for comminuting organic material to form shreds. The shredder has a shredding chamber (2) provided with rotatable cutting devices (3), wherein the shredder (1) furthermore includes a fan chamber (6) containing a fan (7) which is connected to the shredding chamber (2) via a passage (4), wherein the fan (7) is configured to generate a suction force which will suck the shreds out of the shredding chamber via the passage and will remove these from the fan chamber (6) via a discharge opening (8). In contrast to the known shredders, this shredder (1) no longer has a discharge opening in the shredding chamber and, in addition, no longer requires a calibration grille.

A paper shredder cutting assembly having an arbor, spaced-apart cutting blades on the arbor, a rigid frame set apart from and parallel to the arbor, and braces coupling the arbor to the frame. Each resilient brace is a spacer between a pair of spaced-apart cutting blades. The braces support arbor and cutting blades. The rigid frame and the braces cooperate to strengthen, and to reduce translational motion of the arbor, while allowing rotation of the arbor. Each brace has a brace body, a brace tang extending therefrom, and a brace tab extending perpendicularly from the brace tang. Each brace tab is aligned with another along an edge of the rigid frame, the brace bodies are spacers between the cutting blades, and the brace tabs impair translational motion of the brace bodies. A paper shredder with a motor, gearing, and counterposing cutting assemblies has motion-limited resilient spacers adjacent to cutting blades.

A method and apparatus for infectious waste treatment. First, the infectious waste may be shredded into a mixture of liquid and shredded solid waste, then the mixture may be poured into a plurality of perforated bags. The liquid waste drips from the perforated bags onto a preheating subsystem and the solid waste remains in the perforated bags. The preheating subsystem heats up the liquid waste to a pre-disinfection temperature. Finally, steam may be utilized to heat up the liquid waste and the solid waste to a disinfecting temperature.

A stationary housing (3) has an interior space (5) and at least one interior wall (7). At least one sawblade (9) is rotatable with respect to the stationary housing (3), and has a periphery (12) provided with a plurality of cutting teeth (15) and a plurality of collecting notches (17). An inlet opening (19) for feeding material to the interior space (5), and an outlet opening (21) for dispatching pulverized material from the interior space (5) are provided in the interior wall (7) of the housing (3), with a plurality of recesses (23) facing the periphery (12) of the sawblade (9) receiving the cut material from collecting notches (17) of the sawblade (9), and reverting the cut material to the periphery (12) of the sawblade (9) so that the material is cut multiple times before dispatch. The interior wall (7) surrounds a main part of the periphery (12) of the sawblade (9), and the inlet opening (19) and the outlet opening (21) are in direct communication with the interior space (5) so that the material enters and leaves the interior space (5) during one revolution of the sawblade (9).

The shredding device comprises a rectangular housing a rotating shaft which penetrates the lateral the walls of the rectangular housing, a driving unit which rotates said rotating shaft, a plurality of disk-shaped cutters which are detachably mounted on the rotating shaft, each of the disk-shaped cutter has a plurality of cutter U-shaped concaves and which have predetermined-depth at every predetermined interval, a plurality of disk-shaped spacers which are detachably mounted on said rotating shaft, mounted between neighboring two of said disk-shaped cutters and which have a diameter smaller than a diameter of said disk-shaped cutter, and scrapers each of which is mounted on each of longitudinal side walls of said rectangular housing, and is arranged with predetermined gap against circumferences of the disc cutters and circumference of said disk-shaped spacers; wherein each of the disk-shaped cutters has a cutter groove running along its circumference.

A device to reduce solid state drives (SSD) and the like digital media storage devices into particles less than 2 mm maximum edge length. The device is particularly adapted to disintegrating 1.8 and 2.5 solid state drives at a rate of about 360 HDD/hr or 720 SSD/hr with a throughput of about 10 seconds. A blade assembly is designed to provide multiple cutting angles while rotating at 520 rpm to maintain a low decibel rating.

A plastic-dedicated shredder according to the present invention includes at least a hopper, a shredder housing located below the hopper, and a base to which the shredder housing is fixed. The shredder housing includes at least a lower hosing and an upper housing that can open and close. The shredder housing includes a rotation blade support. A rotation blade is fixed to the lower housing and arranged in a shredding chamber of the rotation blade support. The rotation blade support includes a blade support main body and a blade support segment that are separable from each other. The blade support segment is configured to be movable relative to the blade support main body to open and close the shredding chamber. In the present invention, the rotation blade support is divided into two parts, the blade support main body and the blade support segment. When cleaning the shredding chamber, the blade support segment is moved to open the shredding chamber of the rotation blade support and thoroughly clean and remove residues from the shredding chamber.

A work machine having a belt tensioning system is described. A belt is engaged with an engine drive sheave and a driven sheave of a rotor having a plurality of cutting tools configured for reducing wood infeed material. An idler pulley is mounted to an idler arm that is hinged to the machine frame. An actuator is hinged to the idler arm and the frame. The actuator may be extended and retracted in order to press the idler pulley into stronger and weaker engagement with the belt in order to set the desired amount of tension in the belt. One or more sensors may be used to sense the amount of tension in the belt, and the one or more sensors may be in communication with a control system that controls the actuator to monitor and adjust the belt tension so that it is maintained within desired limits.

Featured are a two-stage grinder, an apparatus embodying same and methods related thereto. Such a medical waste grinder includes a first stage and a second stage. The first stage includes spring loaded cutter stacks mounted on two adjacent shafts between two edge plates, each of the cutter stacks including cutters arranged in a helix to create space, each cutter including a number of teeth per blade and including a major diameter and a minor diameter, each cutter turning opposite a fixed counter knife enabling a pinching action against the teeth of the cutter. The second stage includes spring loaded cutter stacks.

A method for producing clean black mass, anode or cathode for subsequent recycling is provided, the method comprising subjecting an intact battery to a shredding process to produce an aggregate, wherein the smallest particle generated is between 2.5 percent and 40 percent of original battery size. Also provided is a shredder for minimizing aggregation of whole batteries, the shredder comprising a shaft defining a longitudinal axis and a latitudinal axis; and a plurality of teeth disposed on said knives which fit on said shaft at an angle to the latitudinal axis selected from 15 degrees and 45 degrees, wherein the teeth have a first proximal end integrally molded to the shaft and a second free distal end.