Bend detector for a pipeline pig
US4628613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1986 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Jan 13, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bend detector for use on a pipeline pig assembly comprising a front pig element and a rear pig element pivotally connected to the front pig element by the bend detector; the front pig element having a longitudinally disposed housing with a forward drive cup for driving the assembly by the flow of a fluid through a pipeline system, the rear pig element having a longitudinally disposed housing axially supported in the pipeline, a plurality of odometer wheels radially affixed to the housing of the rear pig element for determining the distance traversed by the assembly through the pipeline system; the bend detector comprising a universal joint having a pair of yoke members pivotally connected to a central member about a pair of mutually perpendicular axes, each of the yoke members having a yoke and a collar, mounting plates for attaching the collars to the front pig element and the rear pig element, respectively, the central member being bored out for receiving a longitudinal hollow sleeve and a central opening in each of the collars thereby forming an axially aligned passageway with the hollow sleeve, a cable received in the passageway and having its rear end anchored to the rear mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.