Multi-purpose T-square and level combination tool
US5353509A · kind A · utility
Inventor
Key dates
| Filing date | Jul 27, 1993 |
| Grant date | Oct 11, 1994 |
| Priority date | — |
| Expiry date | Jul 27, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-purpose combination tool for forming an enlarged T-square or, alternately, an elongated carpenter's level to facilitate installation of wall panels, doors, windows, signs and the like. The tool comprises an arm and a cross member rigidly mountable perpendicularly thereon. The arm and the cross member each have a central web portion with parallel flanges at opposite end edges of the web portion and spaced apart level vials secured within cutouts formed in each of the respective web portions. Ruler scales are situated along the end edges so that when the arm is rigidly mounted perpendicularly to the cross member, the scales share a common point of origin. In addition, the cross member, when so attached to the arm, forms a shoulder projecting outwardly therefrom against which the straight edge of a workpiece can be abutted while the arm itself is used as a guide for marking or cutting. Extension of either the arm or the cross member or both is possible by attaching additional pieces similar to the arm to each of them. To make simply an elongated carpenter's level, the cross member can be attached to the arm so that the cross member forms a longitudinal extension thereof. Conve…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.