Electrically insulated tube union
US5114190A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1991 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Aug 27, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L25/023
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electrically insulated tube union includes a pair of tube fitting assemblies and an electrically non-conductive connector. Each tube fitting assembly has a fitting body, a fitting nut and a threaded ferrule. The connector has a body with an external radial flange between the ends thereof. The connector body is externally threaded on either side of the flange and the threads are axially spaced from the connector ends. The ferrules threadably engage the connector threads and are captured between their respective fitting nut and body. Each ferrule has a tapered end with an unthreaded portion that seats in a frusto-conical portion of the fitting body so that when the fitting nut and body are threadably engaged the ferrule unthreaded end grips the unthreaded connector ends to provide a fluidtight and electrically insulated coupling between the pair of tube fitting assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.