Method of making spacer stock
US5761946A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1995 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | May 25, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D11/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A flat elongated substrate having a bead of a gas and/or moisture pervious adhesive having a desiccant is moved along a predetermined linear path between spaced upper wheels aligned with spaced lower wheels. The upper wheels have a peripheral groove to shape the bead as the substrate moves between the upper and lower wheels. The lower wheels each have a U shape peripheral groove with the base of the U of the downstream wheels being narrower than the base of the U of the upstream wheels and the depth of the U of the downstream wheels being deeper than the depth of the U of the upstream wheels to provide a spacer stock having a base connected to a pair of spaced upright legs such that the base connected to the legs have a generally U shape configuration and a shaped bead on the surface of the base between the legs. The spacer stock may be bent to form a spacer frame to separate outer sheets of an insulating glazing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.