Joseph A Luongo

US Patent:

7186336, Mar 6, 2007

Filed:

May 21, 2004

Appl. No.:

10/851497

Inventors:

Geoff C. Gerhardt - Millbury MA, US
Joseph A. Luongo - Walpole MA, US

Assignee:

Waters Investments Limited - New Castle DE

International Classification:

B01D 15/08

US Classification:

2101982, 210101, 210659, 422 70

Abstract:

A method and apparatus for monitoring and controlling the nano-scale flow rate of fluid in the operating flow path of a HPLC system. A first flow sensor is disposed in a first flow path between a first flow-divider and a fluidic tee. A second flow sensor is disposed in a second flow path between a second flow-divider and the fluidic tee. A first recycle flow restrictor is disposed in the first recycle flow path in fluid communication with the first flow-divider. A second recycle flow restrictor is disposed in the second The permeability of each recycle flow restrictor can be selected to produce a desired flow rate with each respective flow path. The output signals of the first and second flow sensors to control output of a pump within each flow path.

US Patent:

7241115, Jul 10, 2007

Filed:

Aug 21, 2003

Appl. No.:

10/645082

Inventors:

Joseph A. Luongo - Walpole MA, US
Steven J. Ciavarini - Natick MA, US
Robert Q. Tacconi - Medfield MA, US
Frank A. Rubino - North Attleboro MA, US
Robert J. Dumas - Upton MA, US

Assignee:

Waters Investments Limited - DE

International Classification:

F04B 49/00
G01M 3/04
G08B 21/00

US Classification:

417 53, 417 63, 73 40, 340605

Abstract:

Embodiments of the present invention feature a method and apparatus for detecting defects, such as, leaks, component failure and adverse performance. One embodiment of the present apparatus for pumping fluid comprises a pumping chamber having an inlet and an outlet powered by a motor. The motor operates in pumping mode upon receiving a pumping signal. The apparatus further comprises at least one inlet valve in fluid communication with the inlet of the pumping chamber. And, the apparatus comprises a switchable valve in fluid communication with the outlet of the pumping chamber. The switchable valve has a closed position and an open position, and assumes the closed position upon receiving a close signal. A pressure measuring device is in fluid communication with the pumping chamber, between said inlet valve and switchable valve. The pressure measuring device determines a minimal pressure and first threshold pressure at a first time and a second threshold pressure at a second time.

US Patent:

7665480, Feb 23, 2010

Filed:

Aug 17, 2005

Appl. No.:

11/573742

Inventors:

John Angelosanto - North Attleboro MA, US
Joseph A. Luongo - Walpole MA, US
Frank A. Rubino - North Attleboro MA, US

International Classification:

F16L 35/00

US Classification:

137 1511, 137312, 137800, 277320

Abstract:

Embodiments of the present invention are directed to methods and devices for conveying or containing fluids under pressure in which seals are provided with a defined path to vent fluid in the event of a seal failure.

US Patent:

7674375, Mar 9, 2010

Filed:

May 20, 2005

Appl. No.:

11/569301

Inventors:

Geoff C. Gerhardt - Millbury MA, US
Joseph A. Luongo - Walpole MA, US

Assignee:

Waters Technologies Corporation - Milford MA

International Classification:

B01D 15/08

US Classification:

2101982, 210101, 210656, 210659

Abstract:

A method and apparatus for monitoring and controlling nano-scale flow rate of fluid in the operating flow path of a HPLC system provide fluid flow without relying on complex calibration routines to compensate for solvent compositions gradients typically used in HPLC. The apparatus and method are used to correct the flow output of a typical, analytical-scale (0. 1-5 mL/min) HPLC pump to enable accurate anti precise flow delivery at capillary (

US Patent:

7955059, Jun 7, 2011

Filed:

Mar 2, 2005

Appl. No.:

10/598031

Inventors:

Theodore D. Ciolkosz - Milton MA, US
Peter Kirby - Derry NH, US
Mark W. Moeller - Kingston MA, US
Russell Keene - Sudbury MA, US
Daniel J. McCormick - Westford MA, US
Charles Murphy - Uxbridge MA, US
Joseph A. Luongo - Walpole MA, US
David R. Friswell - Upton MA, US
Theodore Dourdeville - Marion MA, US

Assignee:

Waters Technologies Corporation - Milford MA

International Classification:

F04B 39/04
F16K 15/04

US Classification:

417454, 13753311, 13753313, 13753315

Abstract:

In various embodiments a fluid control device suitable for high pressure analytical instruments includes a housing having an interior surface with an end wall. The interior surface defines a chamber. A valve assembly disposed in the chamber controls the flow of fluid through the chamber. An end cap is disposed in the housing opposite the end wall to enclose the chamber. The end wall and end cap each have an opening to pass a fluid to the chamber or to remove a fluid from the chamber. The housing and end cap each has an abutment surface to receive the other abutment surface. At least one of the abutment surfaces has a plastic seal coating. A means of compression, such as a compression housing and compression sleeve, is included to engage the end cap to deform the plastic seal coating between the abutment surfaces and thereby seal the chamber.

US Patent:

8176932, May 15, 2012

Filed:

Jan 5, 2010

Appl. No.:

12/652271

Inventors:

John Angelosanto - North Attleboro MA, US
Joseph A. Luongo - Walpole MA, US
Frank Rubino - North Attleboro MA, US

Assignee:

Waters Technologies Corporation - Milford MA

International Classification:

F16L 35/00

US Classification:

137312, 137800, 277320

Abstract:

Embodiments of the present invention are directed to methods and devices for conveying or containing fluids under pressure in which seals are provided with a defined path to vent fluid in the event of a seal failure.

US Patent:

8241013, Aug 14, 2012

Filed:

Oct 24, 2006

Appl. No.:

12/089713

Inventors:

Mark W. Moeller - Kingston MA, US
Daniel J. McCormick - Westford MA, US
Joseph A. Luongo - Walpole MA, US

Assignee:

Waters Technologies Corporation - Milford MA

International Classification:

F04B 49/00
F16K 5/10
F16K 11/087

US Classification:

417286, 417532, 13762541, 251208

Abstract:

Embodiments of the present invention are directed to devices and methods for propelling fluids that feature at least one first pump assembly having a primary pump, an accumulator pump, drive means, valve means and control means. The valve means moves between the first position and the second position as the accumulator pump and primary pump alternate between a loading movement and a pump movement. The control means is in signal communication with the accumulator pump, the primary pump and the valve means. The control means issues signal command to the accumulator pump to assume the loading movement and the pump movement and the primary pump to assume the loading movement and pump movement in coordination with the movement of the valve means such that fluids are propelled from the first outlet.

US Patent:

8297589, Oct 30, 2012

Filed:

Apr 11, 2007

Appl. No.:

12/296461

Inventors:

Theodore Dourdeville - Marion MA, US
Frank A. Rubino - North Attleboro MA, US
Kurt D. Joudrey - Newton MA, US
Joseph A. Luongo - Walpole MA, US
John Angelosanto - North Attleboro MA, US

Assignee:

Waters Technologies Corp - Milford MA

International Classification:

F16K 31/02

US Classification:

25112919, 25112901, 25112904

Abstract:

A valve including a linear positioning component operatively connected to a valve body and an actuating element.