G - Physics
01
F
G01F 11/28 (2006.01) B66B 17/08 (2006.01) B66B 17/26 (2006.01) G01F 11/42 (2006.01) G01F 11/46 (2006.01)
Patent
CA 2156997
A measuring flask is described for use in a mine shaft assembly. The measuring flask includes a body, a discharge opening, a door, and a pressurised fluid actuated door locking mechanism. The body defines a storage chamber having a sloping bottom and the discharge opening is defined in the body adjacent to the sloping bottom . The door is displaceable between a closed position in which it closes the discharge opening and an open position in which is permits material to be discharged from the measuring flask through the opening. The door locking mechanism is operable to lock the door releasably in its closed position. Instead or in addition to the door locking mechanism, the measuring flask has a resilient door retaining arrangement configured to retain the door releasably in its closed position.
Mccarthy Tetrault Llp
Rotaque (proprietary) Limited
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