Swagelok is a privately held international company, focusing on the manufacture and sale of gas and fluid systems components, such as tube fittings, valves, tubing, and gauges. It was founded in 1947 by Fred A. Lennon in Cleveland, Ohio and in 1965, it moved to Solon, Ohio, where its headquarters remain. They are best known for creating the Swagelok compression tube fitting U.S. Patent 3,075,793 in 1959, a commonly used family of connectors for high and low pressure stainless steel tubing. Wikipedia.

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Patent
Swagelok Company | Date: 2017-01-26

A preassembly for a conduit fitting includes an annular fitting component and a conduit gripping device. The annular fitting component has an interior wall extending along a central axis from an inboard end to an outboard end. The interior wall includes an inboard surface having a first diameter, an outboard surface having a second diameter smaller than the first diameter, and an intermediate surface recessed from the inboard surface by an outward facing inboard radial wall and recessed from the outboard surface by an inward facing outboard radial wall. The conduit gripping device is retained within the annular fitting component and includes a projection extending radially outward of an outer circumferential surface of the conduit gripping device, and axially toward an inboard end of the conduit gripping device, with an end portion of the projection being axially captured between the inboard radial wall and the outboard radial wall.


Patent
Swagelok Company | Date: 2016-08-09

A conduit fitting of the type having first and second threaded fitting components and at least one conduit gripping device, further includes a stroke limiting member that allows the fitting to be pulled up by applying a predetermined torque. In one embodiment, the stroke limiting member may be a non-integral torque collar. Alternatively, the fitting may also be pulled up by turns or may have an integral torque collar. In still another embodiment, a stroke limiting member is provided that may be used to enable a fitting that is designed to be pulled up by turns to also be pulled up by torque. In other embodiments, the non-integral torque collar may be installed onto one of the fitting components, and then deformed so as to prevent or make it more difficult to remove the torque collar after installation onto the fitting component.


Patent
Swagelok Company | Date: 2016-12-14

A fitting for a tube or pipe capable of functioning a high pressures having a first fitting component adapted to receive the conduit end; a conduit gripping device such as a ferrule or ferrules and a second fitting component that can be joined to the first fitting component to cause the conduit gripping device to grip the conduit and seal when assembled. In one aspect of the invention, the first fitting component is constructed from a material that is softer than the material used to construct the second fitting component. An additional aspect of the invention include a retaining portion on the second fitting component that constrains the tube gripping device against pressure. The retaining portion can also be configured to retain the tube gripping device to the second fitting component prior to installation and in a finger-tight condition. A further aspect of the invention includes a first fitting component in which an exterior portion of the component is work hardened radially outward from the tube gripping device. The fitting may optionally be provided with a structure to effect the pull-up by torque functionality.


Patent
Swagelok Company | Date: 2017-03-10

A diaphragm valve includes a valve body, a valve assembly disposed to seal the valve cavity and including a diaphragm and a valve seat retained with a seat carrier, a threaded member assembled with the valve body, and a valve actuator assembled with the valve body and operable to move a surface of the diaphragm into and out of contact with the valve seat. The valve body includes a valve cavity, a first port and a second port, with the first port and the second port being open to the valve cavity. The threaded member includes an annular bead that directly contacts the diaphragm to apply a compressive load to the diaphragm against a first side of the seat carrier. The valve actuator is separate from the threaded member, and is removable from the valve body without removing the threaded member from the valve body.


A fitting is provided that may optionally be pulled-up to its final assembled condition by torque rather than by turns. In one embodiment, at least one fitting component includes a structure that facilitates pull-up by torque. The structure may take a wide variety of different forms.


Patent
Swagelok Company | Date: 2017-01-18

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.


Patent
Swagelok Company | Date: 2017-01-18

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.


Patent
Case Western Reserve University and Swagelok Company | Date: 2017-06-07

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.


Patent
Swagelok Company | Date: 2017-03-15

A fitting includes first and second threaded fitting components, a conduit gripping device, and a stroke resisting member having a first axial length, the stroke resisting member being disposed between a threaded portion of the first fitting component and a radially extending portion of the second fitting component. The stroke resisting member is axially engaged by the radially extending portion of the second fitting component when the first and second fitting components are joined together to a first relative axial position, such that a tightening torque beyond the first relative axial position is increased by the axial engagement. The stroke resisting member is plastically compressed to a second axial length smaller than the first axial length when the first and second fitting components are joined together to a second relative axial position advanced beyond the first relative axial position.


Patent
Swagelok Company | Date: 2017-04-19

Two conduit gripping devices (24,30) that are to be used together in a conduit fitting assembly (10) 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 (24,30) comprises a retaining structure (R) by which the devices are mechanically connected together as a subassembly (10). For example, in one embodiment a front ferrule (24) and a back ferrule (30) for a tube fitting may be snapped together.

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