| 摘要 |
<p>A delivery unit for ice creams of the type including at least a first piston pump supplied by at least one ice cream producing assembly, wherein the cylinder of said piston pump, in the portion corresponding to the end part of the . supply stroke of said piston, is connected through a radial port to the delivery side of at least one second pump. Said second pump sucks a flowing ice cream garnishing material from a suction conduit controlled by a check valve, said sucking operation taking place when said first pump is in a nonoperative position with its piston obstructing said radial port, the piston stroke of said second pump being controlled, during the sucking operation, against the action of counteracting means.</p> |
