Patents by Inventor Alfredo Quiroga
Alfredo Quiroga 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: 9234612Abstract: A threaded joint has a sealing ring radially positioned between a pin and a box and axially positioned on a portion of the pin on an opposite side of the threads of the pin from the nose of the pin. The sealing ring has two protruding annular lips positioned at a skewed angle to the longitudinal axis, two or more radial annular ribs on an external surface, an internal surface, and an at least partly embedded reinforcement ring. When the joint is made up, the sealing ring is in sealing contact with an annular groove of the box by the annular ribs and in sealing contact with the pin by the internal surface. The internal surface of the sealing ring can have a uniform diameter or have radially protruding annular ribs.Type: GrantFiled: June 20, 2008Date of Patent: January 12, 2016Assignee: Tenaris Connections LimitedInventors: Nestor J. Santi, Gastón Mazzaferro, Alfredo Quiroga
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Patent number: 8840152Abstract: Thin-walled pipe joints can include a first pipe and a second pipe. The first pipe includes a hollow pin member positioned at about an end of the first pipe. The second pipe includes a hollow box member positioned at about an end of the second pipe. The hollow box member is further configured to at least partially surround the pin member of the first pipe. The joint also includes a first ring placed adjacent an end of the hollow pin member and a second ring engaged with the box member. The second ring substantially axially abuts against the first ring and the first ring substantially axially abuts the box member. The second ring further generally extends from the first ring in a direction opposite to the end of the pin member adjacent to the box member.Type: GrantFiled: March 28, 2011Date of Patent: September 23, 2014Assignee: Tenaris Connections LimitedInventors: Gabriel Carcagno, Alfredo Quiroga, Gaston Mazzaferro
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Patent number: 8333409Abstract: A threaded joint comprises a pin coupled to a box with an annular groove, one or a pair of seal rings, and hydraulic actuating means to pressurize the seal ring or rings against the pin to provide sealability of the joint. The seal ring or rings comprise a frustoconical surface, an external surface, and an internal surface with one or more protruding annular ribs. In the unpressurized state, the seal ring or rings do not protrude from the groove. In the pressurized state, the frustoconical surface of the sealing ring is in sealing contact with an internal surface of the annular groove of the box, and the annular ribs of the sealing ring are in sealing contact with the external surface of the pin.Type: GrantFiled: June 25, 2008Date of Patent: December 18, 2012Assignee: Tenaris Connections LimitedInventors: Nestor J. Santi, Gastón Mazzaferro, Alfredo Quiroga
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Patent number: 8186722Abstract: A high torque threaded joint comprising a box member having threads and a pin member having threads (10) configured and positioned to mate with the threads of the box member. There is a flank-to-flank contact thread profile using trapezoidal threads with both a positive and very low load flank angle, (?1 or a); and a positive and very low stabbing flank (14) angle, (?2, or b), wherein the threads are coated with a solid, dopefree surface treatment.Type: GrantFiled: March 27, 2008Date of Patent: May 29, 2012Assignee: Tenaris Connections LimitedInventors: Gabriel E. Carcagno, Francisco Alfredo Quiroga
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Publication number: 20110233926Abstract: Pipe joints and methods for connecting a first pipe to a second pipe are provided. The joint includes a first pipe and a second pipe. The first pipe includes a hollow pin member positioned at about an end of the first pipe. The second pipe includes a hollow box member positioned at about an end of the second pipe. The hollow box member is further configured to at least partially surround the pin member of the first pipe. The joint also includes a first ring placed adjacent an end of the hollow pin member and a second ring engaged with the box member. The second ring substantially axially abuts against the first ring and the first ring substantially axially abuts the box member. The second ring further generally extends from the first ring in a direction opposite to the end of the pin member adjacent to the box member.Type: ApplicationFiled: March 28, 2011Publication date: September 29, 2011Applicant: Tenaris Connections LimitedInventors: Gabriel Carcagno, Alfredo Quiroga, Gaston Mazzaferro
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Publication number: 20100187808Abstract: A threaded joint comprises a pin coupled to a box with an annular groove, one or a pair of seal rings, and hydraulic actuating means to pressurize the seal ring or rings against the pin to provide improved scalability of the joint. The seal ring or rings comprise a frustoconical surface, an external surface, and an internal surface with one or more protruding annular ribs. In the unpressurized state, the seal ring or rings do not protrude from the groove. In the pressurized state, the frustoconical surface of the sealing ring is in sealing contact with an internal surface of the annular groove of the box, and the annular ribs of the sealing ring are in sealing contact with the external surface of the pin.Type: ApplicationFiled: June 25, 2008Publication date: July 29, 2010Applicant: TENARIS CONNECTIONS AGInventors: Nestor J. Santi, Gastón Mazzaferro, Alfredo Quiroga
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Publication number: 20100181727Abstract: A threaded joint has a sealing ring radially positioned between a pin and a box and axially positioned on a portion of the pin on an opposite side of the threads of the pin from the nose of the pin. The sealing ring has two protruding annular lips positioned at a skewed angle to the longitudinal axis, two or more radial annular ribs on an external surface, an internal surface, and an at least partly embedded reinforcement ring. When the joint is made up, the sealing ring is in sealing contact with an annular groove of the box by the annular ribs and in sealing contact with the pin by the internal surface. The internal surface of the sealing ring can have a uniform diameter or have radially protruding annular ribs.Type: ApplicationFiled: June 20, 2008Publication date: July 22, 2010Applicant: TENARIS CONNECTIONS AGInventors: Nestor J. Santi, Gastón Mazzaferro, Alfredo Quiroga
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Publication number: 20100181762Abstract: A high torque threaded joint comprising a box member having threads and a pin member having threads (10) configured and positioned to mate with the threads of the box member. There- is a flank-to-flank contact thread profile using trapezoidal threads with both a positive and very low load flank angle, (?1 or a); and a positive and very low stabbin flank (14) angle, (?2, or b), wherein the threads are coated with a solid, dopefree surface treatment.Type: ApplicationFiled: March 27, 2008Publication date: July 22, 2010Applicant: Tenaris Connectiona AGInventors: Gabriel E. Carcagno, Francisco Alfredo Quiroga