Fabrication of pile weatherstripping having fins
US5338382A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Aug 10, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1052
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Pile weatherstripping having rows of pile sandwiching a fin is fabricated so as to precisely locate the height of the fin with respect to the height of the pile. A travelling endless band receives webs providing the fins on opposite sides thereof with the edge of each web, which defines the height of the fin, precisely positioned on a side of the band and the other edge overhanging the edges of the band. Alignment of the webs on the band is provided either by an aligning fixture or by coining the webs to provide lines of indentations which index the webs at the edges of the band. The yarn which forms the pile is wound around the webs and the band and serves to wrap the overhanging portions of the webs around the band, or a guide may be used to facilitate wrapping of the webs around the band, prior to winding of the yarn. Backing strips are attached, as by ultrasonic welding, along the edges of the band. Then the yarn is slit without cutting into the webs. Hold down wires may be used overlying the webs on the surfaces of the bands and below the yarn. These wires are lifted during slitting. After slitting there is provided a pair of weatherstrips having rows of pile provided by the s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.