Extension set for spirit levels
US7290346B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2006 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Feb 9, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An extension set for a spirit level having an elongated leveling face for setting on a surface and defining a nominal working length, an opposite face to the leveling face, a pair of opposite major side surfaces, and a pair of opposite end sections, the extension set including a pair of discrete elongated U-shaped profile spirit level extenders for lengthwise accommodating an end section of the spirit level with its leveling face facing towards the surface and its opposite face facing away therefrom on spaced apart alignment on the surface such that the pair of spirit level extenders partially underlie the spirit level's leveling face and their remaining portions extend lengthwise therebeyond for extending its nominal working length, and a pair of spirit level clamps for mounting on the pair of spirit level extenders for clamping the spirit level thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.