Patent Number: 047611278
Section: claims

1. Apparatus for the encapsulation of harmful waste products, comprising a drum formed with axially compressible rolling rings, a charge chute for the delivery of wastes and an encapsulating material into the drum, a vibratable platform supporting the drum beneath the charge chute, an inflatable support means for the platform for lifting the drum against a surface at the bottom of the charge chute and for axially compressing the rolling rings by a predetermined amount to maintain the end of the drum in sealing engagement about the charge chute, and vibration means for vibrating the platform to agitate the contents of the drum but without breaking the seal at the charge chute due to the pre-compression of the rolling rings. 2. Apparatus accordiing to claim 1 in which the inflatable support comprises a plurality of pneumatic cushions beneath the platform and connected to a common compressed gas supply. 3. Apparatus according to claim 1 in which the vibration means comprises at least one vibrator secured to and mounted under the platform.