# US 10,766,216 B2 · Tire heating press

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- Number: US 10,766,216 B2
- Document ID: US10766216B2
- Status: Granted
- Kind: B2
- Application number: 16/066,582
- Filed: 2017-01-27
- Published: 2019-01-10
- Granted: 2020-09-08
- Earliest claimed: 2016-02-29
- Assignees: Harburg-Freudenberger Maschinenbau GmbH
- Applicants: Harburg-Freudenberger Maschinenbau GmbH
- Inventors: Arne Zimmermann
- Web page: https://patentgrep.com/patent/US10766216B2

## CPC

- B29D 30/0662: {Accessories, details or auxiliary operations}
- B29C 35/007: {Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids (B29C35/0294 takes precedence)}
- B29D 2030/0667: {Circulating the fluids, e.g. introducing and removing them into and from the moulds; devices therefor}
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)

## Abstract

A device is used to vulcanize tire blanks and has at least one heatable mold for receiving the tire blank. Furthermore, the device has at least one controllable supply device for a heating medium, which is provided with at least one valve. The valve has a positioning device that is actuated by a liquid fluid.

## Claims

### Claim 1

A device for vulcanization of tire blanks, comprising: at least one heatable mold for receiving the tire blank; at least one controllable supply device for a heating medium, the supply device having one inlet valve and one outlet valve, wherein the inlet valve has a first positioning device that is actuated by a liquid fluid, wherein the outlet valve has a second positioning device that is actuated by the liquid fluid, wherein the first positioning device includes a first piston-cylinder assembly and the second positioning device includes a second piston-cylinder assembly; and a pump to deliver the liquid fluid from a tank to the first and the second piston-cylinder assemblies and for a pressure buildup, wherein the pump is coupled to the tank, and wherein the inlet valve is connected to a first control valve by a first control line for actuating the inlet valve and the outlet valve is connected to a second control valve by a second control line for actuating the outlet valve, wherein the first control valve and the second control valve are 3/2-way valves.

### Claim 2 (depends on 1)

The device according to claim 1, wherein the inlet valve has a spring for definition of a normal position.

### Claim 3 (depends on 1)

The device according to claim 1, wherein the inlet valve is closed in a normal state.

### Claim 4 (depends on 1)

The device according to claim 1, wherein the outlet valve is open in a normal state.