# US 2021/0329940 A1 · Stirrer of a machine for making and dispensing liquid or semiliquid food products and machine comprising the stirrer

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- Number: US 2021/0329940 A1
- Document ID: US20210329940A1
- Status: Published application
- Kind: A1
- Application number: 17/242,291
- Filed: 2021-04-27
- Published: 2021-10-28
- Earliest claimed: 2020-04-28
- Assignees: Ali Group S.R.L.—Carpigiani
- Applicants: Ali Group S.R.L. - Carpigiani
- Inventors: Roberto LAZZARINI; Federico TASSI
- Web page: https://patentgrep.com/patent/US20210329940A1

## CPC

- A23G 9/12: using means for stirring the contents in a non-moving container
- A23G 9/045: {of slush-ice, e.g. semi-frozen beverage}
- A23G 9/22: Details, component parts or accessories of apparatus insofar as not peculiar to a single one of the preceding groups
- A23G 9/224: {Agitators or scrapers}
- A23G 9/16: the products being within a cooled chamber, e.g. drum
- A23G: COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF

## Abstract

A stirrer of a machine for making and dispensing liquid or semi-liquid food products, rotating about an axis, comprises: a first end element and a second end element; longitudinal elements extending along the axis between the first end element and second end element; scraping elements which are removably couplable to the longitudinal elements, the scraping elements having a portion that is partly helical in shape.

## Claims

### Claim 1

A stirrer of a machine for making and dispensing ice cream products, rotating about an axis and characterized in that it comprises:
a first end element and a second end element;
longitudinal elements extending along the axis between the first end element and second end element;
scraping elements removably couplable to the longitudinal elements, the scraping elements having a portion that is partly helical in shape, wherein:
the scraping elements are provided with first engagement elements configured to allow the scraping elements and longitudinal elements to be coupled to each other.
the first engagement elements are formed on opposite sides of the portion.
the first engagement elements are defined by a plurality of elastically deformable locking elements adapted to allow the scraping element to be held at a predetermined position when it has been removably coupled to the longitudinal elements.

### Claim 2 (depends on 1)

The stirrer according to claim 1, wherein the locking elements are defined by protuberances.

### Claim 3 (depends on 1)

The stirrer according to claim 1, wherein the longitudinal elements have a prismatic shape.

### Claim 4 (depends on 1)

The stirrer according to claim 1, wherein the first end element and the second end element have an annular shape.

### Claim 5 (depends on 1)

The stirrer according to claim 1, wherein the first end element, the second end element, the longitudinal elements and the scraping elements are made of plastic material.

### Claim 6 (depends on 1)

A machine for making liquid or semi-liquid food products, comprising:
a container for containing liquid or semi-liquid products;
a thermal treatment cylinder contained inside the container;
a stirrer according to claim 1, located inside the container and mounted to the outside of the thermal treatment cylinder;
a thermal system comprising a heat exchanger associated with the thermal treatment cylinder.

### Claim 7 (depends on 6)

The machine according to claim 6, wherein the container for containing liquid or semi-liquid products is defined by a first, inside wall and a second, outside wall, the first, inside wall and the second, outside wall forming between them a gap that is not affected by the liquid or semi-liquid products.

### Claim 8 (depends on 7)

The machine according to claim 7, wherein the first, inside wall forms part of a first element and the second, outside wall forms part of a second element, the first element being insertable into the second element.

### Claim 9 (depends on 6)

The machine according to claim 6, wherein the thermal treatment cylinder is disposed at an angle to a vertical direction.

### Claim 10 (depends on 6)

The machine according to claim 6, wherein the container is provided with a product outlet duct and comprising a dispensing unit associated with the container, comprising: a lever movable between a position for closing the outlet duct and a position for opening the outlet duct, and a closing element connected to the lever and adapted to be moved by it to open or close the outlet duct.

### Claim 11 (depends on 10)

The machine according to claim 10, wherein the lever is configured to be moved in rotation.