Induction tacking method and apparatus
US4650947A · kind A · utility
Inventors
Key dates
| Filing date | Feb 19, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Feb 19, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/3055
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Securing a ribbon of an expandable resin containing a heat activated blowing agent to a metal body, such as a sheet metal bow for the roof of a vehicle body, by bonding a portion of the ribbon to the body. The portion of the metal body immediately adjacent the ribbon is induction heated to transfer sufficient heat to the ribbon to bond it to the metal body without heating the bulk of the ribbon sufficiently to activate the blowing agent to expand the bulk of the ribbon into a foam resin. Subsequently, the metal body with the ribbon secured thereto is assembled with a panel and then heated to activate the blowing agent to produce a resin foam disposed between the metal body and panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.