Patent ID: 8910562

Claim:
A pneumatic system for controlling a bath crust breaker, comprising: a cylinder defining a piston chamber; a piston slidably displaced within the cylinder by a pressurized fluid directed to either a first portion of the piston chamber with respect to the piston or a second portion of the piston chamber oppositely positioned about the piston with respect to the first portion; and a pneumatic valve system, including: a first control valve positioned between a first pressure limiting orifice and the piston chamber, the first control valve being aligned between first control valve first and second positions, wherein the first control valve in the first control valve first position is aligned with the first portion, and in the first control valve second position is aligned with the second portion; and a second control valve positioned between a second pressure limiting orifice and the first control valve, the second control valve being aligned between second control valve first and second positions.