Patent ID: 7674033

Claim:
A dynamic mixer that comprises: a housing comprising a first inlet opening, a second inlet opening, an outlet opening, and a mixing chamber, wherein the second inlet opening opens into the mixing chamber and wherein the outlet opening opens out of the mixing chamber; a rotatable mixing element mounted in the mixing chamber, wherein the rotatable mixing element rotates about a rotation axis that extends through the housing; and a delay chamber comprising a delay chamber volume, wherein the delay chamber is located in the housing, and wherein the delay chamber comprises a length between a first end and a second end, and further wherein the first inlet opening opens into the delay chamber; and a setback opening located between the delay chamber and the mixing chamber, wherein the setback opening is spaced from the second end of the delay chamber such that a portion of the delay chamber volume is located between the setback opening and the second end of the delay chamber, and further wherein the setback opening is located at a position along the length of the delay chamber that is between the first inlet opening and the second end of the delay chamber.