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US 11,554,912 B2Granted
Removable thief hatch plug
AssigneeChesapeake Energy Corporation
InventorLandon K. Worth
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a removable plug configured to preclude the release of gases through a thief hatch positioned on a hydrocarbon tank.
Claims18
An apparatus configured to substantially preclude the release of gases through a hatch in a tank, said tank having a thief hatch opening, said apparatus comprising:
- a first rigid plate having a first diameter and a first center hole;
- a second rigid plate said second rigid plate having a second diameter;
- a flexible disk said flexible disk having a third diameter, said flexible disk positioned between said first rigid plate and said second rigid plate;
- a shaft passing through said first center hole, a second center hold and a third center hole, a first end of said shaft protrudes beyond said first rigid plate and said first end of said shaft carries threads, a second end of said shaft protrudes beyond said second rigid plate and carries a handle;
- a first nut positioned on said first end of said shaft;
- and,
- a second nut positioned on said shaft adjacent to said second rigid plate, said first nut and said second nut retain said first rigid plate, said second rigid plate and said flexible disk on said shaft.
4 more elements
An apparatus configured to substantially preclude the release of gases through a hatch in a tank, said tank having a thief hatch opening, said apparatus comprising:
- a first rigid plate having a first diameter and a first center hole;
- a second rigid plate said second rigid plate having a second diameter where said second diameter is less than said first diameter and having a second center hole;
- a flexible disk said flexible disk having a third diameter where said third diameter is greater than said first diameter and having a third center hole, said flexible disk positioned between said first rigid plate and said second rigid plate;
- a shaft passing through said first center hole, said second center hole and said third center hole, a first end of said shaft protrudes beyond said first rigid plate and said first end of said shaft carries threads, a second end of said shaft protrudes beyond said second rigid plate and carries a handle;
- first and second laterally extending arms carried by either said second end of said shaft or said handle;
- a first nut positioned on said first end of said shaft;
- and,
- a second nut positioned on said shaft adjacent to said second rigid plate, said first nut and said second nut bias said first rigid plate and said second rigid plate against said flexible disk.
5 more elements
Dependencies are inferred from the claim text.