Pull-up by torque fitting

US8398124B2 · kind B2 · utility

Inventors

• Mark A. Bennett · LaGrange, US
• Tobin Barry · Chagrin Falls, US
• Mark A. Clason · Orwell, US
• John D. Karkosiak · Broadview Heights, US
• Thomas A. Lippucci · Seven Hills, US
• Andrew P. Marshall · University Heights, US
• Jeffrey Michael Rubinski · Novelty, US
• Edward A. Stroberg · Willoughby, US
• Peter C. Williams · Cleveland Heights, US

Key dates

• Filing date: Nov 2, 2007
• Grant date: Mar 19, 2013
• Expiry date: Jun 3, 2029

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L2201/10
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A fitting is provided that may optionally be pulled up to its final assembled condition by torque rather than by turns. At least one fitting component includes a structure that facilitates pull up by torque. In one embodiment, a ring is provided that may be disposed on one of the fitting components and includes an engagement surface that engages a surface on the other of the fitting components at a first axial position that corresponds to a complete pull up. The engaging surfaces increase the torque required to continue pulling up the fitting past the first axial position.