Pipe-fitting with flexible sleeve and cinching nut
US6581981B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jun 20, 2001 |
| Grant date | Jun 24, 2003 |
| Priority date | — |
| Expiry date | Jun 20, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/917
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A female fitting for pipes or tubes, particularly indicated for use in cramped quarters and under highly restrictive environmental conditions, has a split front section threaded with tapered translation-type threads. A hex-nut with commensurate and similarly tapered threads is used to cinch the split front section over an engaging pipe or tube. A circular groove within the fitting can nest an O-ring or other sealing collar. A flange with flattened parallel peripheral zones surround the fitting for reinforcement and to provide a convenient clamping surface. A cutting tool with dual pairs of cutting wheels is used to score two parallel channels around the end of the pipe or tube to receive a first sealing-ring made of compressible material and a second made of the same material as the pipe or tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.