Joseph G Luongo

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:

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:

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:

8333568, Dec 18, 2012

Filed:

Mar 4, 2005

Appl. No.:

10/598310

Inventors:

Joseph A. Luongo - Walpole MA, US
John Angelosanto - North Attleboro MA, US
Frank Rubino - North Attleboro MA, US
David J. First - Carlisle MA, US
Jean-Pierre Pugnaire - Arlington MA, US
Richard R. Venable - Milton MA, US

Assignee:

Waters Technologies Corporation - Milford MA

International Classification:

F04B 49/00

US Classification:

417 63, 417437, 92 5 R

Abstract:

Embodiments of the present invention are directed to method and devices for measuring the pressure of a pump chamber in which no internal opening or connections are needed. One embodiment of the present invention is directed to an apparatus for pumping fluid. The apparatus comprises at least one housing having a transducer surface. The transducer surface has a thickness exhibiting measurable deformation upon the chamber holding a fluid under pressure such that the transducer surface has a first position at which the chamber is at one pressure and a second position at which the chamber is at a second pressure. A strain sensor is affixed to the transducer surface producing; at least one signal upon the transducer surface assuming the first position and at least one signal upon the transducer surface assuming the second position to function as an integrated pressure transducer.

US Patent:

20080099070, May 1, 2008

Filed:

Aug 24, 2005

Appl. No.:

11/573904

Inventors:

Joseph A. Luongo - Walpole MA, US
Charles Murphy - Norton MA, US
David Friswell - Upton MA, US
Mark W. Moeller - Kingston MA, US
Peter Kirby - Upton MA, US

Assignee:

WATERS INVESTMENTS LIMITED - New Castle

International Classification:

F16K 27/00

US Classification:

137 1518, 251366

Abstract:

Embodiments of the present invention feature devices and methods for holding fluids at high pressures. One embodiment of the present invention features a fluid containing conveying device for receiving and discharging fluids. The device comprises a housing having a chamber for containing a fluid. The housing has a first gasket receiving surface for receiving a gasket. A gasket formed of a deformable material and having a first abutment surface and second abutment surface. The first abutment surface received on the first gasket receiving surface and the second abutment surface for receiving a chamber closing piece. The chamber closing piece having a second gasket receiving surface, the chamber closing piece for closing the chamber. At least one of the first gasket receiving surface of the housing and the second gasket receiving surface of the chamber closing piece having a retaining grove, having at least one edge. Compression means for compressing the gasket, deforming the material such that the gasket is pressed into retaining groove and gripped by the edge of the cavity to prevent gasket movement.

US Patent:

20110272855, Nov 10, 2011

Filed:

Oct 28, 2009

Appl. No.:

13/125182

Inventors:

Joseph A. Luongo - Walpole MA, US
Michael Budnick - Blackstone MA, US
Mark W. Moeller - Kingston MA, US
James P. Murphy - Franklin MA, US
Geoff C. Gerhardt - Millbury MA, US
Keith Fadgen - Hope Valley RI, US
Joseph D. Michienzi - Plainville MA, US

Assignee:

WATERS TECHNOLOGIES CORPORATION - Milford MA

International Classification:

B29C 59/02

US Classification:

264293

Abstract:

Described are techniques for fabricating one or more parts of a valve used in a liquid chromatography system. At least one of a rotor and a stator are provided. The rotor is included in the valve and has a first surface facing a stator. The stator is included in the valve and has a second surface facing the rotor. A pattern is formed in at least one of the first surface and the second surface. Forming the pattern includes compressing the at least one surface by applying pressure thereto causing displacement of material to form at least one groove.

US Patent:

20140044577, Feb 13, 2014

Filed:

Apr 17, 2012

Appl. No.:

14/007392

Inventors:

Joshua A. Shreve - Franklin MA, US
Neal B. Almeida - Cumberland RI, US
John Angelosanto - North Attleboro MA, US
Joseph A. Luongo - Walpole MA, US

Assignee:

WATERS TECHNOLOGIES CORPORATION - Milford MA

International Classification:

F04B 7/00

US Classification:

417437

Abstract:

Described are embodiments of a pump that can be used, for example, in liquid chromatography applications. The pump includes a seal wash housing, pump head and seal assembly. A wear-resistant coating applied to a sealing surface or gland of the pump head or seal wash housing improves the hardness and chemical compatibility of the sealing surface. Oxidation of the sealing surface is reduced so that the sealing surface is less abrasive to the seal assembly and the lifetime of the seal assembly is increased.

US Patent:

57884650, Aug 4, 1998

Filed:

Feb 23, 1996

Appl. No.:

8/606149

Inventors:

Joseph A. Luongo - Walpole MA
Jeffrey Howard Stokes - Franklin MA
Robert E. Reynolds - Easton MA
Wade P. Leveille - Douglas MA
Robert J. Dumas - Upton MA

Assignee:

Waters Investments Limited - Wilmington DE

International Classification:

F04B 1700

US Classification:

417360

Abstract:

A pump configured so that tools are not required to remove the pump head and disassemble the plunger. A single large hand operated knob or head nut facilitates tool-less pump head removal. The pump head is guided into position in a manifold and held in place by the hand knob. The manifold is designed to receive all the external fluidic connections made to the pump head. Fluid paths to the pump head have been replaced with miniature face seals which facilitate high pressure sealing between the pump head and manifold. Low pressure tubing seals reside in a seal wash chamber or housing and are not attached to the head, eliminating the need for tooling to disconnect them during pump head removal. A tool-less plunger mechanism includes a nutcap assembly having a plunger socket receiving a plunger assembly including a sapphire plunger fixed to a plunger holder ball accommodated by the socket. The plunger assembly is captured within the socket by a plurality of cams.