Speed level
US7266899B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Nov 27, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S33/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention provides a combination tool for use by an individual workman, without resorting to assistance by another workman, for laying out horizontal and plumb lines in a confined space, such as that found in a shower stall, bathtub enclosure, or fireplace. The invention has a body in the shape of an isosceles triangle. Centrally positioned referencing levels align with the centerlines of each leg of the triangle. The referencing levels are duplicated in order to provide better accuracy of measurement. The tool is of sufficient thickness to allow the removable attachment of a chalk line clip to one of two blunted ends of the tool so that a single workman can extend and snap chalk lines on a surface of interest. A tiler may use the tool of the present invention to practice an inventive technique of laying tile in an efficient and aesthetically pleasing manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.