Outside corner mastic applicator
US5814351A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1996 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Sep 23, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/1655
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An applicator for drywall mastic can alternatively cover flat drywall joints, outside corner drywall joints, or simultaneously both outside corners on a stub drywall, all with little or no manual adjustment of the applicator. A spring biased lever is pivotally mounted on each side of the applicator. Normally, the bias extends a projection on the lever which rides over the edge of the outside corner in order to guide and direct the applicator as it moves along a corner wall. A circumferential flange on a wheel cooperates with the projection to give greater stability. If the applicator is pressed against a flat wall, the projection is pushed back against the bias of the spring so that the projection has no effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.