Patent · US Expired

Flexible probe for insertion into an auxiliary pipe extending from a main pipe

US6084402A · kind A · utility

5Cited by
8References
4Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 18, 1999
Grant dateJul 4, 2000
Priority date—
Expiry dateMar 18, 2019

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16L2101/30
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A flexible probe for insertion into an auxiliary pipe indicates the proximity of the auxiliary pipe to a device within a main pipe. The probe includes an apparatus for generating a magnetic field for detection within the main pipe. An indicator associated with the probe generates a signal when the probe is adjacent the main pipe. The magnetic field generating apparatus includes a coil with an electronic circuit for generating an alternating current signal and also includes a switch operable when the probe contacts the main pipe.

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