Tufted weatherstripping with barrier fin
US4637948A · kind A · utility
Inventors
Key dates
| Filing date | Aug 14, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Aug 14, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23993
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for tufting weatherstripping involves forming a barrier fin on a substrate, advancing the substrate with the barrier fin extending downwardly from the underside thereof past a tufter head, and passing the downwardly extending barrier fin through a channel in the needleplate of the tufter head while the substrate passes over and is supported by the needleplate. A row of tufts is then tufted along one or both sides of the barrier fin. The barrier fin may be formed by folding the substrate, adhering a strip to the underside of the substrate, or by forming a film from a row of previously inserted tufts. Preferably, the substrate is guided transversely to ensure alignment of the barrier fin or fins between the rows of tufts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.