Patent ID: 9232874
Filing Date: 2016-01-12
CPC Classification: A47J,B67D

Claim Text:
1. A beverage preparation machine comprising: a tank for containing a food-grade fluid, the tank comprising: a reservoir body with side, bottom and top walls, at least one dispensing opening comprising a spring-mounted poppet valve for establishing a fluid connection between the machine and the tank, the spring-mounted poppet valve comprising a stem head, a valve stem resting onto a surface of the machine, and a spring that is in contact at one end with the valve stem and on the other end with the reservoir, the tank having a weight W a switch located in the vicinity of at least one wall of the tank, so that: when the tank has a weight W a user warning device that is actuated when the switch does not contact the tank wall so as to warn the user that the tank needs a refill.