Method for relieving pressure in newly vulcanized tires while still in the tire press
US6770229B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 7, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Jan 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/0675
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for relieving pressure in a vulcanized tire while still in a tire press is disclosed, wherein the bladder securement mechanism utilizes a position sensor mechanism and eliminates the need for spacers and a floating piston. A tire press comprises a lower mold, an upper mold, and a bladder securement mechanism. The bladder securement mechanism has an upper clamping mechanism for securing the upper periphery of a bladder and a lower clamping mechanism for securing the lower periphery of the bladder. A center mechanism tube has a center mechanism rod positioned therein. A piston is disposed within the center mechanism tube. The piston provides reciprocating motion to the center mechanism rod. A position sensor mechanism operatively associated with the bladder securement mechanism. The method comprises the steps of positioning a green tire on the bottom mold; lowering the upper clamping mechanism; inflating the bladder, thereby forming a seal between the bladder and the tire; closing the press so that the green tire is enclosed within the upper and lower molds; curing the green tire; breaking the seal by moving the upper clamping mechanism downward toward the lower clamping mec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.