US Patent 7789276 Pressurized receptacle for dispensing a viscous product

A pressurized receptacle that dispenses viscous product from a container that has a dispensing valve. The dispensing valve has a valve pot that is secured in the container opening which seats a spring that biases a dispensing stack and a valve element to a closed position. The biasing position can be selectively overcome by a rotary collar that interacts with a helical ramp that can house at least one stud that drives the dispensing stack and thereby the valve element open to allow dispensation to occur.