Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Patent
1994-05-09
1996-04-09
O'Shea, Sandra L.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
For small object detection or location
324260, 324235, G01V 308, G01R 3307, G01N 2772
Patent
active
055065058
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.
REFERENCES:
patent: 3109410 (1963-11-01), Ver Nooy
patent: 3673628 (1972-07-01), Sullivan
patent: 3754275 (1973-08-01), Carter et al.
patent: 4491018 (1985-01-01), Osburn
patent: 4596204 (1986-06-01), Hicks
patent: 4692703 (1987-09-01), Extance et al.
patent: 4709208 (1987-11-01), Kevr
patent: 4714888 (1987-12-01), French et al.
patent: 4857851 (1989-08-01), Anderson et al.
patent: 4935698 (1990-06-01), Kawaji et al.
patent: 5279251 (1994-01-01), Ver Nooy
Rosenberg Jeffrey S.
Worthen Steven D.
O'Shea Sandra L.
Phillips Roger
TDW Delaware Inc.
LandOfFree
Apparatus for remotely indicating pipeline pig including a senso does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for remotely indicating pipeline pig including a senso, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for remotely indicating pipeline pig including a senso will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-141334