Patent Number: 6,254,367

Title: High viscosity product pumping method and apparatus

Abstract: The required larger than normal pressure drop between the infeed and pump inlets of a positive displacement gear or lobe type pump pumping a high viscosity fluid such as pastry dough is obtained by the introduction of a vacuum inside the pump at or near the rotary nip points of the gear or lobe type pump to provide a means for the removal of any gas present in the vicinity of the nip point.

Inventors: Seiling; Samuel Orrin (Richmond, VA)


International Classification: F04C 13/00 (20060101); F01C 001/18 ()

Expiration Date: 07/03/2018