Patents by Inventor Vinh K. Do
Vinh K. Do 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).
-
Patent number: 10273952Abstract: A pressure packing for a piston rod of a reciprocating compressor includes a case having a piston rod through bore. A compartment within the case is coincident with the through bore and the compartment has an axial length at least as long as a stroke of the piston rod.Type: GrantFiled: June 22, 2012Date of Patent: April 30, 2019Assignee: Nuovo Pignone SrlInventors: Carlos Alfredo Trevino, Vinh K. Do, Tomasz Tomaszewski, Jeffrey Allen Raynal
-
Publication number: 20160138584Abstract: A pressure packing for a piston rod of a reciprocating compressor includes a case having a piston rod through bore. A compartment within the case is coincident with the through bore and the compartment has an axial length at least as long as a stroke of the piston rod.Type: ApplicationFiled: June 22, 2012Publication date: May 19, 2016Applicant: Nuovo Pignone SrlInventors: Carlos Alfredo TREVINO, Vinh K. DO, Tomasz TOMASZEWSKI, Jeffrey Allen RAYNAL
-
Patent number: 8967675Abstract: A tubular connector connects two tubulars of a string of tubular members. The tubular connector has a pin end tubular member having an axis and a pin end. A pin end flange is positioned on an outer diameter of the pin end and has an undercut adjacent the union of the pin end flange with the pin end. The tubular connector also has a box end tubular member having a box end. A box end shoulder is adjacent the union of the box end with the box end tubular member. The box end shoulder has an undercut thereon. The pin end is secured to the box end so that the pin end tubular member and the box end tubular member are joined, stresses applied to the pin end tubular member and the box end tubular member are distributed through the undercuts.Type: GrantFiled: August 24, 2012Date of Patent: March 3, 2015Assignee: Vetco Gray Inc.Inventors: Vinh K. Do, Joseph William Pallini, Jr., Kevin Edward O'Dell
-
Publication number: 20140054890Abstract: A tubular connector connects two tubulars of a string of tubular members. The tubular connector has a pin end tubular member having an axis and a pin end. A pin end flange is positioned on an outer diameter of the pin end and has an undercut adjacent the union of the pin end flange with the pin end. The tubular connector also has a box end tubular member having a box end. A box end shoulder is adjacent the union of the box end with the box end tubular member. The box end shoulder has an undercut thereon. The pin end is secured to the box end so that the pin end tubular member and the box end tubular member are joined, stresses applied to the pin end tubular member and the box end tubular member are distributed through the undercuts.Type: ApplicationFiled: August 24, 2012Publication date: February 27, 2014Applicant: Vetco Gray Inc.Inventors: Vinh K. Do, Joseph William Pallini, JR., Kevin Edward O'Dell
-
Patent number: 7913558Abstract: Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical overloads includes applying an overload indicator across an interface between components in the compressor, and observing a mechanical condition of the overload indicator. The mechanical condition of the overload indicator is indicative of whether the compressor experienced a mechanical overload. By placing the indicator in an appropriate location in the compressor, overload conditions can be checked during routine inspections and maintenance checks.Type: GrantFiled: February 28, 2007Date of Patent: March 29, 2011Assignee: Nuovo Pignone Holdings, S.p.A.Inventors: Hamid Reza Sarshar, Vinh K. Do, Simone Pratesi, Nicola Campo, Jeffrey Raynal
-
Publication number: 20080206069Abstract: Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical overloads includes applying an overload indicator across an interface between components in the compressor, and observing a mechanical condition of the overload indicator. The mechanical condition of the overload indicator is indicative of whether the compressor experienced a mechanical overload. By placing the indicator in an appropriate location in the compressor, overload conditions can be checked during routine inspections and maintenance checks.Type: ApplicationFiled: February 28, 2007Publication date: August 28, 2008Inventors: Hamid Reza Sarshar, Vinh K. Do, Simone Pratesi, Nicola Campo, Jeffrey Raynal
-
Publication number: 20080202247Abstract: Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical overloads includes forming a mechanical fuse that is configured to strain under overload conditions, and observing a condition of the mechanical fuse. The condition of the mechanical fuse is indicative of whether the compressor experienced a mechanical overload. By simply observing the mechanical fuse, overload conditions can be checked during routine inspections and maintenance checks.Type: ApplicationFiled: February 28, 2007Publication date: August 28, 2008Inventors: Hamid Reza Sarshar, Vinh K. Do, Simone Pratesi, Nicola Campo, Jeffrey Raynal
-
Patent number: 7406864Abstract: Mechanical overloads in a reciprocating gas compressor can cause irreparable damage to compressor components if the source of the overloads is not repaired. A method of detecting mechanical overloads includes forming a mechanical fuse that is configured to strain under overload conditions, and observing a condition of the mechanical fuse. The condition of the mechanical fuse is indicative of whether the compressor experienced a mechanical overload. By simply observing the mechanical fuse, overload conditions can be checked during routine inspections and maintenance checks.Type: GrantFiled: February 28, 2007Date of Patent: August 5, 2008Assignee: Nuovo Pignone Holdings, S.p.A.Inventors: Hamid Reza Sarshar, Vinh K. Do, Simone Pratesi, Nicola Campo, Jeffrey Raynal
-
Patent number: 7380452Abstract: A method of determining fuse parameters in a reciprocating gas compressor ensures a safe failure upon exceeding an overload limit. Stresses and bolted joint behavior for critical components in compressor running gear are evaluated using a finite element analysis. Capabilities of the critical components during an overload event are evaluated using a propagation and variances tool. The capabilities of the critical components are compared against overload conditions. At least one of an optimal fuse location and a fuse geometry are determined according to the comparison to establish a safe failure point upon exceeding the overload limit. With a mechanical fuse defining a failure point, critical compressor components can be protected from damage, and personnel can be protected from risk of a gas leakage.Type: GrantFiled: February 28, 2007Date of Patent: June 3, 2008Assignee: Nuovo Pignone Holdings, S.p.A.Inventors: Hamid Reza Sarshar, Vinh K. Do, Simone Pratesi, Nicola Campo, Jeffrey Raynal
-
Patent number: 6604515Abstract: A cooling apparatus (10) and method for a turbocharged internal combustion engine (12). The combustion air (16) exiting a turbocharger (18) is passed over an air-to-water intercooler (40) then over an air-to-air intercooler (42) for heat exchange with liquid coolant and with ambient air (32) respectively. During periods of low ambient air temperature, the combustion air may be directed through a bypass duct (80) around the air-to-air intercooler, and further, may be heated by the coolant in the air-to-water intercooler. A multi-speed fan (44) and/or shutters (48) may be used to control the flow of ambient air across the air-to-air intercooler. A cooling duct (68) provides a flow of ambient air to the fan motor (46) during periods of operation when the flow of ambient air over the air-to-air heat exchanger is restricted by the shutters. Coolant exiting a subcooler (28) has the lowest temperature in the system and is directed to a lube oil cooler (34) for engine lubricant cooling.Type: GrantFiled: January 16, 2002Date of Patent: August 12, 2003Assignee: General Electric CompanyInventors: Gregory A. Marsh, Brian L. Walter, Peter L. Valentine, Mahesh C. Aggarwal, Robert A. Armbruster, Jr., Vinh K. Do
-
Publication number: 20020195090Abstract: A cooling apparatus (10) and method for a turbocharged internal combustion engine (12). The combustion air (16) exiting a turbocharger (18) is passed over an air-to-water intercooler (40) then over an air-to-air intercooler (42) for heat exchange with liquid coolant and with ambient air (32) respectively. During periods of low ambient air temperature, the combustion air may be directed through a bypass duct (80) around the air-to-air intercooler, and further, may be heated by the coolant in the air-to-water intercooler. A multi-speed fan (44) and/or shutters (48) may be used to control the flow of ambient air across the air-to-air intercooler. A cooling duct (68) provides a flow of ambient air to the fan motor (46) during periods of operation when the flow of ambient air over the air-to-air heat exchanger is restricted by the shutters. Coolant exiting a subcooler (28) has the lowest temperature in the system and is directed to a lube oil cooler (34) for engine lubricant cooling.Type: ApplicationFiled: January 16, 2002Publication date: December 26, 2002Inventors: Gregory A. Marsh, Brian L. Walter, Peter L. Valentine, Mahesh C. Aggarwal, Robert A. Armbruster, Vinh K. Do