Plastic sleeve and method of manufacturing the same
US6386551B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | May 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/703
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention resides in a boot seal for use in sealing a joint. The joint comprises first and second relatively movable parts. The boot seal is configured in the form of a sleeve to extend between and around the vehicle relatively movable parts. The sleeve has a laminate wall which comprises at least two layers of thermoplastic elastomeric material which are bonded together. At least one of the layers is a stretch-toughenable polyester thermoplastic elastomer which has been diametrically stretched in an amount effective to increase the toughness of said one layer. The laminate wall has a percent elongation to rupture of at least 100, and a flexural modulus which is less than 100,000 psi. The laminate wall preferably has a puncture resistance of at least 50 Newtons/mm wall thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.