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Nigel M. Page Patents |
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Inventor: Page; Nigel M.
Address: Merrillville, IN
No. of patents: 2
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6578647 |
Sealing structure for a rock drill bit |
June 17, 2003 |
| A sealing structure for a rock drill bit includes an elastomeric diaphragm for installation in the drill bit so as to separate grease from drilling mud. The diaphragm has an aperture extending through it, and a plug is disposed in the aperture so as to form a mechanical seal with a wall |
| 6357540 |
Rotary drill bit with lip seal in roller cone bit |
March 19, 2002 |
| A roller-cone drill bit in which a double lip seal, made of a self-lubricating elastomer, protects the bearings from the mud. |
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