Patents by Inventor Alan Lockstedt
Alan Lockstedt has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7387178Abstract: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing surfaces. The seal includes one or more relief ports that are disposed through the seal body and that have openings through each of the seal body external surfaces. The relief port can be specially configured, e.g., have different diameter sections of constant or variable dimensions, to provide a degree of control over pressure equalization through the seal body when the seal is loaded within the drill bit. The seal may include an element, e.g., solid, tubular, or porous, disposed within the relief port to provide a further desired degree of control over pressure equalization through the seal when the seal is loaded within the drill bit.Type: GrantFiled: April 10, 2007Date of Patent: June 17, 2008Assignee: Smith International, Inc.Inventors: James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan Lockstedt, Peter T. Cariveau, Alysia C. White, Anthony Griffo, Michael Siracki
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Publication number: 20070181347Abstract: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing surfaces. The seal includes one or more relief ports that are disposed through the seal body and that have openings through each of the seal body external surfaces. The relief port can be specially configured, e.g., have different diameter sections of constant or variable dimensions, to provide a degree of control over pressure equalization through the seal body when the seal is loaded within the drill bit. The seal may include an element, e.g., solid, tubular, or porous, disposed within the relief port to provide a further desired degree of control over pressure equalization through the seal when the seal is loaded within the drill bit.Type: ApplicationFiled: April 10, 2007Publication date: August 9, 2007Applicant: SMITH INTERNATIONAL, INC.Inventors: James Neville, James Larsen, Steven Peterson, Manikiran Bandi, Alan Lockstedt, Peter Cariveau, Alysia White, Anthony Griffo, Michael Siracki
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Publication number: 20070107940Abstract: A lubricant is shown and described. The lubricant includes about 1 to 15 weight percent of a sulfur-phosphorus extreme pressure agent, about 5 to 40 weight percent of a thickener, preferably a metal-complex soap, and a basestock. The basestock may be a mineral oil, a synthetic oil, or a combination thereof. Lubricant additives such as corrosion inhibitors, oxidation inhibitors, and anti-wear agents may also be added.Type: ApplicationFiled: November 14, 2005Publication date: May 17, 2007Applicant: Smith International, Inc.Inventors: Alan Lockstedt, Robert Denton
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Patent number: 7201241Abstract: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing surfaces. The seal includes one or more relief ports that are disposed through the seal body and that have openings through each of the seal body external surfaces. The relief port can be specially configured, e.g., have different diameter sections of constant or variable dimensions, to provide a degree of control over pressure equalization through the seal body when the seal is loaded within the drill bit. The seal may include an element, e.g., solid, tubular, or porous, disposed within the relief port to provide a further desired degree of control over pressure equalization through the seal when the seal is loaded within the drill bit.Type: GrantFiled: December 19, 2005Date of Patent: April 10, 2007Assignee: Smith International, Inc.Inventors: James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan Lockstedt, Peter T. Cariveau, Alysia C. White, Anthony Griffo, Michael Siracki
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Publication number: 20060260847Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: ApplicationFiled: July 28, 2006Publication date: November 23, 2006Applicant: Smith International, Inc.Inventors: Alan Lockstedt, Gary Portwood, Scott McDonough
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Publication number: 20060254823Abstract: A high-temperature lubricant is shown and described. The lubricant includes a base stock and about 1 to about 20 weight percent zirconium 2-ethylhexanoate. The lubricant may also include about 1 to about 9 weight percent bismuth 2-ethylhexanoate.Type: ApplicationFiled: May 16, 2005Publication date: November 16, 2006Applicant: Smith International, Inc.Inventors: Robert Denton, Alan Lockstedt, Alysia White
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Publication number: 20060096782Abstract: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing surfaces. The seal includes one or more relief ports that are disposed through the seal body and that have openings through each of the seal body external surfaces. The relief port can be specially configured, e.g., have different diameter sections of constant or variable dimensions, to provide a degree of control over pressure equalization through the seal body when the seal is loaded within the drill bit. The seal may include an element, e.g., solid, tubular, or porous, disposed within the relief port to provide a further desired degree of control over pressure equalization through the seal when the seal is loaded within the drill bit.Type: ApplicationFiled: December 19, 2005Publication date: May 11, 2006Inventors: James Neville, James Larsen, Steven Peterson, Manikiran Bandi, Alan Lockstedt, Peter Cariveau, Alysia White, Anthony Griffo, Michael Siracki
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Publication number: 20060027403Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gave curve such that its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: ApplicationFiled: September 29, 2005Publication date: February 9, 2006Applicant: Smith International, Inc.Inventors: Alan Lockstedt, Gary Portwood, Scott McDonough
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Patent number: 6976548Abstract: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing surfaces. The seal includes one or more relief ports that are disposed through the seal body and that have openings through each of the seal body external surfaces. The relief port can be specially configured, e.g., have different diameter sections of constant or variable dimensions, to provide a degree of control over pressure equalization through the seal body when the seal is loaded within the drill bit. The seal may include an element, e.g., solid, tubular, or porous, disposed within the relief port to provide a further desired degree of control over pressure equalization through the seal when the seal is loaded within the drill bit.Type: GrantFiled: April 2, 2003Date of Patent: December 20, 2005Assignee: Smith International, Inc.Inventors: James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan Lockstedt, Peter T. Cariveau, Alysia C. White, Anthony Griffo, Michael Siracki
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Publication number: 20050167162Abstract: A rolling cone drill bit is provided that has gage inserts on the first row from the bit axis to cut to full gage diameter that have a cutting portion enhanced with a layer of super abrasive material. The gage cutting surface has a center axis that is canted to be more normal to the gage curve such that the its point of contact at gage is away from the thinner portion of the layer of super abrasive material.Type: ApplicationFiled: January 10, 2005Publication date: August 4, 2005Applicant: Smith International, Inc.Inventors: Alan Lockstedt, Gary Portwood, Scott McDonough
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Publication number: 20050133265Abstract: A lubricating grease is specific for a rock bit for drilling subterranean formations. The rock bit body includes a plurality of journal pins, each having a bearing surface, with a cutter cone mounted on each journal pin and also including a bearing surface. A grease reservoir provides lubricating grease to such bearing surfaces. The grease composition adjacent the bearing surfaces comprises a lubricating base oil, sufficient thickener and additives in the base oil to form a rock bit grease, and an effective amount of polarized graphite.Type: ApplicationFiled: December 23, 2003Publication date: June 23, 2005Inventors: Robert Denton, Alan Lockstedt
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Publication number: 20040040747Abstract: Self relieving seals of this invention comprise an elastomeric seal body having a first sealing surface and a second sealing surface for contact with respective drill bit sealing surfaces. The seal includes a pair of external surfaces that each extend along the seal body between the first and second sealing surfaces. The seal includes one or more relief ports that are disposed through the seal body and that have openings through each of the seal body external surfaces. The relief port can be specially configured, e.g., have different diameter sections of constant or variable dimensions, to provide a degree of control over pressure equalization through the seal body when the seal is loaded within the drill bit. The seal may include an element, e.g., solid, tubular, or porous, disposed within the relief port to provide a further desired degree of control over pressure equalization through the seal when the seal is loaded within the drill bit.Type: ApplicationFiled: April 2, 2003Publication date: March 4, 2004Applicant: Smith International, Inc.Inventors: James L. Neville, James L. Larsen, Steven W. Peterson, Manikiran Bandi, Alan Lockstedt, Peter T. Cariveau, Alysia C. White, Anthony Griffo, Michael Siracki