Saint-gobain Performance Plastics Corporation

Furon Company

Mario Fregoso

Kenji A Kingsford

Hy B Nguyen

Thomas J Sievers

Raymond T Savard

Anthony K Chan

David R Martinez

Stéphane Domy

Julien Nallet

Ankit Soni

Thuan An T Dinh

A dual containment fitting may include a primary tubing, a secondary tubing, and a dual containment body. The secondary tubing may surround and be concentric with a first portion of the primary tubing forming a first leak containment space between the primary tubing and the secondary tubing. The dual containment body may include a flare fitting portion and a primary containment nut portion. The flare fitting portion may surround and be concentric with the primary tubing forming a second leak containment space between the primary tubing and the flare fitting portion. The primary containment nut portion may surround and be concentric with the flared end of the primary tubing forming a third leak containment space between the primary tubing and the primary containment nut portion. The primary containment nut portion may include at least one leak passage hole connecting the third leak containment space with the second leak containment space.

Dual containment fitting and dual containment fitting assembly

The present invention relates to a tube connector assembly which may comprise a body provided with a through cavity extending in an axial direction, a ring adapted to be mounted at the periphery of a useful portion of the tube and provided, at one of its ends, with a support surface adapted to receive a curved end portion of the tube, a nut adapted to be screwed onto the body so as to compress the curved end portion of the tube against a receiving surface in the axial direction via said ring, and an annular receiving part forming the receiving surface and removably mounted on the body.

Tube connector assembly

Anti-pumping dispense valves, constructed according to principles of this invention, comprise a fluid transport housing having a fluid inlet passage extending into the housing, a fluid outlet passage extending out of the housing, and a fluid transport chamber disposed within the housing. The fluid transport chamber includes an valve seat. An actuator housing is attached to the fluid transport housing and includes an actuator chamber that is in contact with the fluid transport chambers. A diaphragm/poppet assembly is disposed within the fluid transport chamber and comprises a poppet positioned downstream of the seat for placement against the seat to stop fluid flow through the first fluid transport chamber. An actuator is disposed within the actuator chamber for moving the diaphragm/poppet assembly. Dispense valves of this invention operate to provide a slight vacuum within the fluid flow passageway in the valve to retain or pull back into the valve any nondispensed liquid, thereby eliminating and/or greatly reducing the possibility product contamination via unwanted excess liquid dispensement or dried residual liquid dispensement.

Anti-pumping dispense valve

An encapsulated magnet assembly comprises a non-metallic housing and a magnet disposed within a housing magnet chamber. A housing end cap is fuse bonded to the housing to encapsulate the magnet therein and form an air and fluid-tight seal with the housing. An insulating spacer is interposed between an exposed surface of the magnet and the end cap before assembly and fuse bonding, and is formed from a thermally insulating material to prevent the transmission of thermal energy to the magnet during the fuse bonding process. The insulating spacer serves to protect the magnet from unwanted thermally induced magnetic field losses. The housing also includes one or more projections that extend into the magnet chamber and that cooperate with complementary grooves in the magnet to prevent the magnet from rotating within the chamber.

Encapsulated magnet assembly and method for making the same

A poppet and seat assembly comprises a poppet having a circular imperforate head portion at one poppet end and has an opposite end adapted for connection with a poppet actuator. The poppet head includes a valve seat interface surface along an outside head surface that tapers upwardly, moving radially outwardly from the head, at an angle in the range of from 8 to 25 degrees. The poppet includes a flange that extends radially around the head and that defines a terminal outside diameter edge of the poppet. The flange includes a tongue that projects axially away from the flange. A diaphragm extends radially around the poppet head and is interposed between the poppet head and the flange to enable poppet head movement relative to the flange. The poppet head, flange and diaphragm are all part of a one-piece construction. The assembly also comprises a circular poppet seat that is positioned adjacent to and opposite from the poppet. The seat has a poppet interface surface that tapers upwardly moving radially inwardly towards a radial axis of the seat in the range of from about 2 to 30 degrees. Together, the interacting poppet and seat surfaces are specifically designed to enable high efficiency actuation of the poppet vis-a-vis the seat to provided seating and unseating operation of the assembly. Additionally, the poppet and seat interface surfaces are cleanly swept and devoid of any surface features that could cause unwanted fluid hold up.

High-efficiency poppet and seat assembly

A valve apparatus comprises a valve body, a piston disposed within the valve body, and a rolling diaphragm poppet that is attached the piston to regulates fluid flow through the valve via interaction with a valve seat within the valve body. The valve body has a chamber extending therethrough that includes a valve seat at one chamber end that defines a fluid inlet passage into chamber. The piston disposed within the chamber and is adapted for axial displacement therein by an actuating means. The rolling diaphragm poppet is attached to an end of the piston and is of a one-piece construction. The poppet includes a head that has a circular radial cross section, and that has a frontside surface that is adapted to interface with the valve seat in the chamber to control fluid flow therethrough. The head also has a backside surface that is adapted to accommodate attachment with an end of the piston. The poppet includes a cylindrical sleeve that extends axially away from a peripheral edge of the head and that has a non-bellowed configuration. A flange extends radially from the sleeve to define a peripheral edge of the poppet. The flange including means for providing a leak-tight seal with the valve body. Axial displacement of the poppet head within the chamber, in response to the axial movement of the piston, is provided by a rolling movement of the sleeve in an axial direction between a piston wall surface and a concentric wall surface within the valve body.

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Whittier, CA, United States of America

Mario Fregoso