Apparatus for remotely indicating pipeline pig including a sensor housing having surface engaging orthogonally disposed paramagnetic materials a solid state sensor and a flag
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 9, 1996
Grant Date -
N/A
app pub date -
May 9, 1994
filing date -
May 9, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for non-intrusively indicating the passage of a pipeline pig having a housing adapted to be supported adjacent the exterior surface of a pipeline through which a magnet carrying pig moves, the housing containing an armature formed of pole pieces of paramagnetic material having a narrow gap therein that receives a solid-state magnetic sensing member, the sensing member providing changing electrical characteristics in response to changes in ambient magnetic field intensities, and an indicator pivotally attached to the housing and normally held in a ready position by a latch, the latch being operated by a circuit controlled by the magnetic sensing member so that the flag is released to move to an operative position in response to a changed magnetic field intensity caused by the passage of a magnet carrying pig, the armature within the housing serving to increase the sensitivity of the magnetic sensing member.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully