Swagelok Company

Whitey Co.

Other

Case Western Reserve University

Crawford Fitting Co.

Whitney Co.

Peter C Williams

Cal R Brown

Mark A Clason

Mark A Bennett

Dale C Arstein

Jeffrey Michael Rubinski

Douglas S Welch

John D Karkosiak

Douglas J McClure

Steven V Marx

Ronald P Campbell

Gregory S Kalata

Jeffrey S Rayle

Howard C B Kuhns

Andrew P Marshall

Mark D Bearer

Stephen J Zaborszki

Lonnie E Johnston

Tobin Berry

Sunniva R Collins

Edward M Yusko, Jr

Ulrich H Koch

Gerhard H Schiroky

Connor M Dorony

James E Gotch

Michael Mussig

William J Menz

Kennan Joseph Malec

William J Knaggs

Daniel G Trivett

Richard F Wozniak

Ray D Linderman

Raymond Scott Milhoan

Eric M Kvarda

Christina Semkow

Matthew K Messer

William H Glime, Iii

George A Carlson

Frank Ernst

Richard A Ales

Anna V Agaponova

Terry M Kalain

Michael T Gallagher

Arthur Frank Anton

Johan Jan Goemans

Franziska H Dacek

Larry Dean Vandendriessche

David A McMillan

Michael Ray Butkovic

Gerald A Babuder

William H Glime

Thomas A Lippucci

Jeffrey T Jeromson

John Barry Hull

Michael Douglas Seymour

Wenxian Yang

Ronald Hamilton

Justin Hamilton

Edward A Stroberg

Benjamin Chan

Jason Fruh

Donald E Negrelli

Gilbert F Lutz

Howard C Kuhns

Edward A Pezak

Cyprian A W Illing

Thomas M Mannion

Cyprian Adair William Illing

Carl E Meece

Richard J Medvick

Michael J Mohlenkamp

Theodore J Gausman

Andrew Creque

Michael D Bestic

William Michael Ponikvar

Kevin Nieman

Charles W Hayes, Ii

Robert V Perusek

Victor N Rasanow

Kevin Mracek

Wayne Ostrosky

Robert C Stewart

Sylvia Antionette Bon

Stephen W Moore

Tobin Barry

Sanjeey S Moghe

Michael Rossiter

Robert A Fotta

Richard J Mlinarik

Timothy Garrett Gray

Prasanna Bhamidipati

Stephen J Zaborski

Edward M Yusko Jr

Joseph M Stenger

Stephen R Wirbel

Appasaheb T Patil

Douglas A Covert

David W Crozier

Susan E Corbin

Timothy J Francis

A workpiece made from a self passivating metal and having one or more surface regions defining a Beilby layer as a result of a previous metal shaping operation is activated for subsequent low temperature gas hardening by exposing the workpiece to the vapors produced by heating an oxygen-free nitrogen halide salt.

Enhanced activation of self-passivating metals

The present application discloses methods and apparatus for installing fitting components, such as a conduit gripping device, on a conduit to form an assembly. The assembly is joinable with at least one other fitting component to form a fitting. The present application also discloses methods and apparatus for evaluating characteristics of components of a mechanically attached connection. Characteristics that may be evaluated include, but are not limited to, the position of a conduit gripping device on a conduit, an amount of axial compression or stroke of the conduit gripping device, an amount of clamping force applied to the conduit gripping device as the conduit gripping device is compressed, and an amount of torque applied to members that compresses the conduit gripping device.

Fitting assembly evaluating apparatus and methods

A method for treating a workpiece made from a self-passivating metal and having a Beilby layer is disclosed. The method comprises exposing the workpiece to the vapors produced by heating a reagent having a guanidine [HNC(NH)] moiety and complexed with HCl to activate the workpiece for low temperature interstitial surface hardening.

Chemical activation of self-passivating metals

A fitting includes a first and second threaded fitting component and a conduit gripping device receivable within the first threaded fitting component. A stroke resisting member is integral with the first threaded fitting component and includes a web having a first radial thickness and extending axially inward from the first threaded fitting component to a distal ring portion having a second radial thickness greater than the first radial thickness. A radially extending bearing surface of the distal ring portion axially engages a radially extending portion of the second fitting component when the first and second fitting components are joined together to the first relative axial position. The stroke resisting member resists additional axial stroke of the first and second fitting components, such that a tightening torque beyond the first relative axial position is increased by the axial engagement.

Conduit fitting with components adapted for facilitating assembly

A method for treating a workpiece made of self-passivating metal and having a Beilby layer including applying a coating to a surface of the workpiece, the coating including a reagent, treating the coating to thermally alter the reagent, wherein the thermal altering of the reagent activates and/or hardens the surface.

Activation of self-passivating metals using reagent coatings for low temperature nitrocarburization

A push to connect fitting includes first and second fitting components, a sealing arrangement, a gripping arrangement, and a colleting ring. The first fitting component has an outboard end that is adapted to receive a conduit end. The second fitting component is joined to the first fitting component to define an interior cavity. The sealing arrangement, disposed in the interior cavity, seals one of the first and second fitting components with an outer surface of a conduit end when the conduit end is inserted into the outboard end of the first fitting component. The gripping arrangement is disposed in the interior cavity, and the colleting ring is disposed in the interior cavity and has an inboard end surface engaging an outboard end surface of the gripping arrangement.

Push to connect conduit fitting assemblies and arrangements

A ferrule subassembly for a conduit fitting includes first and second ferrules. The first ferrule includes a front body portion defining a forward tapered surface, a rear body portion defining an interior camming surface, and a retaining extension joined with the rear body portion radially outward of the camming surface and extending axially rearward and radially inward from the inner axial portion. The second ferrule includes a front portion having a tapered forward contact surface adjacent the first ferrule camming surface, an outer radial portion extending axially rearward of the forward contact surface, and a recessed portion axially rearward of the outer radial portion. An end portion of the retaining extension is received in the recessed portion of the second ferrule to retain the second ferrule with the first ferrule as a discontinuous subassembly.

Ferrule assembly for conduit fitting

A workpiece made from a self-passivating metal and having one or more surface regions defining a Beilby layer as a result of a previous metal shaping operation is activated for subsequent low temperature gas hardening by exposing the workpiece to the vapors produced by heating a non-polymeric N/C/H compound.

A ferrule for a conduit fitting includes an interior wall extending along a central axis through the ferrule so that the ferrule can be installed over a conduit end. A first axial side of the ferrule defines a first end portion, a first end camming surface disposed on the first end portion at a first angle with respect to the central axis, and a first end driven surface disposed at a second angle with respect to the central axis, the second angle being greater than the first angle. A second axial side of the ferrule defines a second end portion, a second end camming surface disposed on the second end portion at a third angle with respect to the central axis, the third angle being substantially equal to the first angle, and a second end driven surface disposed at a fourth angle with respect to the central axis, the fourth angle being substantially equal to the second angle. A central boss portion extends radially outward to define a radially outermost surface at an axial center point of the ferrule.

Ferrule for a conduit fitting

Two conduit gripping devices that are to be used together in a conduit fitting assembly are interconnected or held together as a cartridge or subassembly prior to assembly with fitting components to form a fitting assembly. In a more specific embodiment, one or both of the conduit gripping devices comprises a retaining structure by which the devices are mechanically connected together as a subassembly. For example, in one embodiment a front ferrule and a back ferrule for a tube fitting may be snapped together.

A subassembly for a conduit fitting includes a first ferrule and a second ferrule alignable relative to an axis. The first ferrule includes a camming surface at a back portion thereof, and the second ferrule includes a surface that contacts the camming surface when the first ferrule and the second ferrule are axially moved together along the axis. A retaining structure retains the first ferrule and the second ferrule together as a subassembly, and includes a flange extending radially outward and axially rearward from the back portion of the first ferrule to define an outer diameter recess. The flange includes an end portion that extends radially inward to define an inner diameter recess retaining a forward portion of the second ferrule. The outer diameter recess and the inner diameter recess together define a hinge portion of the flange.

A fitting assembly includes a first fitting component having an outboard end that receives the conduit end portion, a second fitting component joined to the first fitting component to define an interior cavity, a seal device disposed in the interior cavity, and a retainer assembled with at least one of the first and second fitting components. The seal device forms a seal between one of the first and second fitting components and an outer surface of a conduit end portion. The retainer includes a gripping portion received in a circumferential groove of the conduit end portion to grip the conduit end portion, and a colleting portion outboard of the gripping portion and configured to apply a colleting force to the outer surface of the conduit end portion at least when an outboard axial load is applied to the conduit.

Single action push to connect conduit fitting

Low temperature gas carburization of stainless steel using acetylene as the carburizing specie is carried out under soft vacuum conditions in the presence of hydrogen or other companion gas. Carburization is made to go faster by including HCl or other carbon-free, halogen-containing activating compound in the carburizing gas being fed to the carburization reactor.

Concurrent flow of activating gas in low temperature carburization

Growing community of inventors

Cleveland Heights, OH, United States of America

Peter C Williams