# US 9,873,235 B2 · Distribution unit for a particulate material

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,873,235 B2
- Document ID: US9873235B2
- Status: Granted
- Kind: B2
- Application number: 15/306,766
- Filed: 2015-04-20
- Published: 2017-02-23
- Granted: 2018-01-23
- Earliest claimed: 2014-04-28
- Assignees: Marangoni S.P.A.
- Applicants: Marangoni S.P.A.
- Inventors: Alessandro Cumer; Daniele Morani
- Web page: https://patentgrep.com/patent/US9873235B2

## CPC

- B29D 30/54: Retreading
- B05B 7/1404: {Arrangements for supplying particulate material}
- B05B 7/1454: {comprising means for supplying collected oversprayed particulate material (spray booth with arrangements for collecting oversprayed material B05B14/40)}
- B05B 7/1486: {for spraying particulate material in dry state}
- B29D 30/72: Side-walls
- B05B 12/085: {responsive to flow or pressure of liquid or other fluent material to be discharged (B05B1/3006, B05B1/323 take precedence; spray pistols designed to control volume of flow with the controlling means being fluid actuated B05B7/1254)}
- B05C 19/00: Apparatus specially adapted for applying particulate materials to surfaces
- B05C 19/04: the particulate material being projected, poured or allowed to flow onto the surface of the work (B05C19/02 takes precedence; involving spraying or electrostatic projection B05B ){(B05C19/005 takes precedence)}
- B29D 2030/541: {Abrading the tyre, e.g. buffing, to remove tread and/or sidewalls rubber, to prepare it for retreading}
- B29D 2030/726: {Decorating or marking the sidewalls before tyre vulcanization}
- B29K 2105/251: {Particles, powder or granules (expandable particles B29K2105/046)}
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

## Abstract

A distribution unit (U) for distribution carbonaceous particulate material, in particular powdered rubber or equivalent material to be applied on the peripheral surfaces (F) of a tire (P), comprises nozzle diffuser (2) for spreading said particulate material and pneumatic supply (1,3,5,7) for feeding said particulate material to said nozzle diffuser (2).

## Claims

### Claim 1

Distribution unit for distribution carbonaceous particulate material, to be applied on the peripheral surfaces of a tire, comprising:
a nozzle diffuser for spreading said particulate material;
a pneumatic supply assembly for feeding said particulate material to said nozzle diffuser; and,
a suction unit for sucking residues of said particulate material falling from said nozzle diffuser;
wherein said nozzle diffuser and said suction unit are mounted directly on a dispenser assembly configured for dispensing extruded rubber on peripheral surfaces of a retreated tire; and,
wherein said suction unit is so disposed with respect to said nozzle diffuser on said dispenser assembly so as to prevent dispersion of said particulate material.

### Claim 2 (depends on 1)

Unit according to claim 1, wherein said pneumatic supply assembly comprises a pneumatic supply hopper containing said particulate material, a Venturi tube coupled to a pump, said tube being disposed below said hopper and connected to said nozzle diffuser.

### Claim 3 (depends on 2)

Unit according to claim 2, further comprising a controller for controlling and regulating the air flow applied to said Venturi tube, and for controlling and adjusting the air pressure applied to said Venturi tube.