Adjustable arch measuring tool and associated use thereof
US9920539B1 · kind B1 · utility
Inventor
Key dates
| Filing date | May 11, 2016 |
| Grant date | Mar 20, 2018 |
| Priority date | — |
| Expiry date | Sep 3, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F21/003
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An adjustable arch measuring tool measures an arcuate curvature of one of a window and a door and thereby assists a user to layout a radius of the arcuate curvature on an existing cutting surface. The adjustable arch measuring tool includes a first member having an arcuate slot defining an adjustable fulcrum axis formed at a proximal end thereof, a second member having an aperture formed at a proximal end thereof, and a fastener removably inserted through the aperture and selectively locked along a curvilinear longitudinal length of the arcuate slot. Advantageously, the second member is selectively pivoted about the adjustable fulcrum axis defined along the arcuate slot of the first member. With the use of reference points and guide pins, each half of the arch can be easily drawn directly on the working surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.