Locator and transmitter calibration system
US8635043B1 · kind B1 · utility
21Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2010 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Apr 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A framework encloses a stepper motor, mounting structure, and circuitry for use in calibrating the responses of utility locators or the precise frequency outputs of locating transmitters, and associated tilt, directional, angle, and gradient sensors. The framework contains two Helmholtz or similar field windings embedded in its sides to achieve maximum accuracy in calibration of locating instruments, such that a locator may be precisely situated within the uniform field of the windings for calibration measurement or testing. Calibration and testing may be done manually or by automated means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.