Pipe coupling assembly and method for lined and unlined pipe
US7909368B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 2008 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | May 1, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L58/182
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A coupling assembly includes a first pipe having a threaded portion and a non-threaded portion and a second pipe having a threaded and non-threaded portion. The non-threaded portion of each of the pipes is located at a free end of the first pipe and the second pipe. The coupling assembly also includes a coupling member for fixedly connecting the first pipe and the second pipe. The coupling member includes a first threaded inlet for receiving the first pipe, a second threaded inlet for receiving the second pipe and a non-threaded portion extending between the first inlet and the second inlet. The non-threaded portion of the coupling member includes an annular recess. A cross-section of the annular recess includes a vertical leg, a first angled leg extending from the vertical leg, a horizontal leg extending from the first angled leg, a second angled leg extending from the horizontal leg and a third angled leg extending from the second angled leg to the first threaded inlet of the coupling member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.