Pipe length tally system
US5001658A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1989 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Jun 19, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/1094
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for use in measuring the lengths of individual pipes in a disassembled pipe string and automatically computing and recording the individual lengths and their cumulative total. The system 20 includes a measuring tape 21 on a spool 22 journalled for rotation as the tape is withdrawn therefrom and a system operations controller 48. The controller comprises a shaft encorder 50 for generating an encoded signal of voltage pulses representing the angular rotation of the spool and microprocessor 60 for converting the encoded signal to a data signal representing the length of a pipe P, the pipe number in order of sequence of measurement, and a cumulative total of individual pipe lengths. The data signals are transferable to a memory storage 64 by manual switch from which they are coupled to a visual display 70 and are retrievable for recording by a printer 72. The controller includes reset means 84 for zeroing controller components when the tape is in a most fully wound position and means 86 for selectively and successively deleting the data signal representing the last measured pipe length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.