Signals and indicators – Indicators – Magnetically actuated
Patent
1992-12-16
1994-01-18
Cuchlinski, Jr., William A.
Signals and indicators
Indicators
Magnetically actuated
G01D 506
Patent
active
052792510
ABSTRACT:
The present invention is a signaling device for indicating passage of a pig through a pipeline. The device attaches to the pipeline by means of a nipple welded to the pipeline. As a pig travels past the device, an actuator of the device which hangs down into the pipeline is pushed upward by the pig. The actuator causes a spring biased plunger located within the device to move upward, causing a polar magnet attached to the plunger's upper end to approach a rotatable magnetic indicator ball. The ball is colored black on an upper half which is initially visible through a clear dust cover provided on the device and is colored yellow on a lower half. The upper half of the ball is of opposite polarity and the lower half is of like polarity to the polar magnet. As the polar magnet approaches the rotatable magnetic ball, the yellow half of the magnetic indicator ball is repelled by the like polarity of the polar magnet, causing the magnetic indicator ball to rotate 180 degrees so that the yellow half is now visible through the dust cover. After the pig has passed, the plunger springs back to its original lower position and the ball can be reset to its original position by means of a reset lever attached to the ball. An alternate embodiment replaces the magnetic indicator ball with a proximity switch which is activated when the polar magnet approaches the proximity switch as the plunger moves upward.
REFERENCES:
patent: 3109410 (1963-11-01), Ver Nooy
patent: 3327677 (1967-06-01), King
patent: 3646906 (1972-03-01), Hammer
patent: 3815542 (1974-06-01), Cooper
patent: 4596204 (1986-06-01), Ralls
patent: 4638278 (1987-01-01), Bullock
patent: 4714888 (1987-12-01), French et al.
patent: 4857851 (1989-08-01), Anderson et al.
Cuchlinski Jr. William A.
TDW Delaware Inc.
Worth W. Morris
LandOfFree
Bidirectional pipeline pig signaling device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bidirectional pipeline pig signaling device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bidirectional pipeline pig signaling device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1131010