Color changing crimp ring device

US12338917B2 · kind B2 · utility

Inventor

• Simon Schwartz · Dahn, DE

Key dates

• Filing date: Oct 12, 2023
• Grant date: Jun 24, 2025
• Expiry date: Nov 28, 2043

Classification

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

Abstract

A color changing crimp ring device to facilitate a worker to visually identify that a crimp ring on a plumbing line has been fully crimped includes a crimp ring that is comprised of deformable material to resist being deformed until exposed to a sufficient compressive force generated by a crimping tool for crimped the crimp ring around a cross-linked polyethylene plumbing pipe. A reactive layer is applied to the crimp ring and the reactive layer normally displays a neutral color. The reactive layer reacts to the sufficient compressive force generated by the crimping tool such that the reactive layer displays a highly visible color. In this way the reactive layer facilitates a worker to visually identify that the crimp ring has been fully crimped onto the cross-linked polyethylene plumbing pipe.