Patent · US Active

Scalable rules capable of creating size-adjustable circles, arcs, and curved shapes

US9772172B2 · kind B2 · utility

0Cited by

29References

21Claims

0Family size

Inventors

Frank Pinal · Jersey City, US
Carlos Rodriguez · Tijuana, MX

Key dates

Filing date	Jan 18, 2013
Grant date	Sep 26, 2017
Priority date	—
Expiry date	Jul 3, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG01B3/1089
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A tool capable of creating and measuring circles and circular profiles of any size without the need for a pivoting center arm. Circle size can be selectively adjusted and held, and both the inside and outside of tool creates and measures circles of a near infinite number of size. The tool contains marking rules such as radius, diameter, arc length, circumference, sector area, area of a circle for any size circle, etc., obviating the need for calculating the same, and any or a combination of unit measure systems can be employed.

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