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US 2009/0152520 A1Published application
Pig extracting device
AssigneeSouthern California Gas Company
InventorTimothy Hepburn
Life of this patent
Estimating the term…
Abstract
A portable device for extracting a pig from a pipeline which uses a lifting means to raise or lower the device and wheels or other suitable means to allow for the device to be easily and quickly moved into position with minimal man power improving the efficiency and safety of the pig extraction process.
Claims20
A portable device for extracting a pig from a pipeline comprising:
- (a) a tray for receiving said pig;
- (b) a top frame connected to said tray;
- (c) a bottom frame;
- (d) a lifting assembly disposed between said top frame and bottom frame for adjusting the height of said tray;
- (e) a cable which can be attached to said pig;
- and
- (f) a device attached to said top frame for winding said cable unto a drum thereby pulling said pig out of said pipeline and unto said tray.
4 more elements
A device for extracting a pig from a pipeline comprising:
- (a) a tray for receiving said pig;
- (b) a top frame attached to the bottom of said tray;
- (c) a bottom frame with a set of front wheels and a set of rear wheels attached thereto;
- (d) a lifting mechanism disposed between said top frame and bottom frame for adjusting the height of said tray;
- (e) a cable which can be attached to said pig;
- and
- (f) a device attached to said top frame for winding said cable unto a drum thereby pulling said pig out of said pipeline and unto said tray.
4 more elements
A method of extracting a pig from a pipeline comprising:
- (a) moving a wheeled device equipped with a tray for receiving said pig in position in front of a pipeline containing said pig;
- (b) adjusting the height of said tray to align it at the proper level to receive said pig from said pipeline;
- (c) attaching a cable to said pig;
- and
- (d) extracting said pig from said pipeline by winding said cable onto a drum.
2 more elements
Dependencies are inferred from the claim text.