Patent · US Expired

Countersink gauge having self-centering probe

US7363721B2 · kind B2 · utility

5Cited by
8References
20Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 7, 2005
Grant dateApr 29, 2008
Priority date—
Expiry dateMar 3, 2026

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01B3/28
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A feature of a countersink in a hole, such as the diameter, is measured by a gauge having a self centering, spherically shaped probe which shifts laterally upon engagement with the countersink side walls to as to align itself with the central axis of the hole. The gauge includes an outer tube gripped by a user during the measurement, and an axially displaceable shaft within the tube that drives an indicator dial. The shaft is coupled with the probe by a flexible connector which transmits axial displacement of the probe to the shaft but allows slight lateral movement of the probe relative to the shaft, permitting the probe to become centered within the countersink.

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