Patents Assigned to P. K. Lindsay Co., Inc.
  • Patent number: 6176439
    Abstract: An enhanced mixing equipment system including a power supply, an actuatable valve, the actuatable valve connected via a line between the power supply and a storage vessel, an actuatable discharge/mixing valve attached to a portion of the storage vessel, the actuatable discharge/mixing valve connected via a line between the actuatable valve and a hose, a terminal end of the hose having a nozzle, a control input line connecting the power supply to a control valve positioned adjacent to the nozzle, and a control return line having a safety bleed positioned adjacent to the actuatable valve and connecting the control valve to the actuatable valve and the actuatable discharge/mixing valve such that any loss of pressure in the control return line results in closing the actuatable valve and the actuatable discharge/mixing valve as pressure is released through the safety bleed. With such an arrangement various configurations are possible which provide various redundancies in operator safety.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: January 23, 2001
    Assignee: P. K. Lindsay Co., Inc.
    Inventor: David Masison