Apparatus and method for manufacturing rubber-wrapped spiral wound gaskets
US6665925B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Dec 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/5191
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus (10) for manufacturing rubber-based spiral wound gaskets,in which a length of an elongate band (22) passes through a bath (34) for applying a coating of a rubber sealing material and then is wound in overlapping relation on a die (100) to make a spiral wound gasket. Wire brushes (70) remove the rubber sealing material from selected portions of the band, to define interior and exterior diameter portions of the wound gaskets. The die (100) defines a slot (102) extending inwardly from a perimeter for receiving a distal end portion of the elongate band (22) so that the gasket does not unwind. A fixing device (120) secures selected portions of the wound elongate band together at the interior and exterior diameters. A cutter (90) severs the elongate band (22) in order to remove the spiral wound gasket from the apparatus (10). A tapper (134) moves strikingly against a perimeter portion of the die to dislodge the spiral wound gasket. A method is disclosed that winds the elongate band around the perimeter of the die (100) until a desired radially thick spiral wound gasket is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.