| 主权项 |
1. An apparatus for containment of collected materials, the apparatus comprising:
at least one storage tank, the storage tank having a tank wall and a hollow interior region; a bladder disposed within the hollow interior region, the bladder being operable to contain the material therewithin; at least one opening formed in the bladder to allow the materials to enter or exit the bladder; an access port disposed on the storage tank and accessible to the hollow interior region of the tank; a vacuum pump attachable to the access port and operable to regulate the pressure of the hollow interior region of the tank, external to the bladder; an engagement device disposed at least partially internal to the bladder and operable to restrict the movement of the bladder within the hollow interior region; and a switch that is disposed in or near the tank wall and that is operably connected to the vacuum pump to regulate the depressurizing of the hollow interior region of the storage tank, such that when the bladder does not contact the engagement device, the engagement device and the switch are in a spaced-apart, non-contacting relationship with each other, and when the bladder contacts the engagement device, the engagement device is pushed into contact with the switch. |
