Patent · US Expired

Combination square, level and plumbing tool

US5933974A · kind A · utility

23Cited by
5References
5Claims
0Family size

Inventors

Key dates

Filing dateMay 28, 1997
Grant dateAug 10, 1999
Priority date—
Expiry dateMay 28, 2017

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01C15/10
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A carpenter's square having a first and second leg at right angles to each other, and a third leg extending between the first and second legs. A magnetic strip on the first leg for attaching the tool to a metallic surface to be plumbed. A first notch in the third leg a first distance from the first leg and a second notch in the third leg a second distance from the first leg so that a plumb string can be threaded through the first and second notches and thereby held in place to support a plumb bob to allow a plumb reading to be taken without the need for manually supporting the plumb bob.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.