But, how does the dispenser know when to stop pumping gas? It starts when the customer removes the pump handle from the dispenser. This action activates a switch that starts the flow of gas.

Discover the innovative automatic liquid soap dispenser for aircraft lavatories by Yokohama Rubber Co Ltd. Patented design includes human body detection for hands-free soap dispensing.

The liquid nitrogen jet presented more excellent impact capability than water jet because of its higher axial and radial velocities. The impact capability of liquid nitrogen jet increased with the ...