Patent ID: 7537139

Claim:
A dispenser adapted for simultaneously dispensing and mixing at least two flowable components in predetermined dispensing proportions, the dispenser including: at least a first container and a second container, said first container housing a first flowable component having a first viscosity and having a first interior hollow region of a first cross section and a first flow-governing aperture having a first aperture size, said second container housing a second flowable component reactive with the first flowable component having a second viscosity and having a second interior hollow region of a second cross section and a second flow-governing aperture having a second aperture size; said first hollow region being pressurized by a first propellant charge of a first pressure and first gas mix, said second hollow region being pressurized by a second propellant charge of a second pressure and second gas mix; a single valve mixing assembly, the assembly including a body defining at least two flow passages, each passage fluidly connecting an inlet to a single mixing region, the mixing assembly also defining a single exit port fluidly connected to the mixing region, the mixing assembly being aligned with, and non-displaceable with respect to, the containers such that a respective inlet is adjacent to an aperture defined in a corresponding container, the mixing assembly further including a single valve member disposed therein for linear movement between an open state in which the valve member is removed from the mixing region and flow communication is established between each flow passage and the exit port, and a closed state in which the valve member is disposed in the mixing region and flow communication is blocked between each flow passage and the exit port; said predetermined dispensing proportions being established by the proportions of said first cross section to said second cross section, said first aperture size to said second aperture size, said first pressure to said second pressure, said first gas mix to said second gas mix and said first viscosity to said second viscosity; and, wherein the valve member defines a pair of deflection surfaces adapted positionable in the mixing region when flow communication is established and for contacting material flowing past the valve member when the member is in the open state.