Method for producing a channel shaped trim
US4333221A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1980 |
| Grant date | Jun 8, 1982 |
| Priority date | — |
| Expiry date | Apr 28, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24331
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for producing a channel-shaped trim including a core member embedded within a covering material and having a longitudinally extending opening for embracing and clamping an edge flange of a support member comprising the steps of perforating a plurality of transversely extending slits of which length is made larger at predetermined intervals in a band-shaped metallic plate to form unslit connecting portions of which width is made narrower at predetermined intervals in both side end portions thereof, rolling the unslit connecting portions in a longitudinal direction thereof to form a core member, covering the core member with a covering material, breaking the core member in the narrower connecting portions to divide into a plurality of core pieces, and bending the covered and divided core member into a desired cross-sectional shape of the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.