Coupler for low pressure piping system
US6843516B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Sep 5, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L21/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A coupler for a low pressure piping system has a hollow metal tube terminating in a pair of end portions defining open ends for slidably receiving and joining together sections of other metal tubes in a substantially air tight relationship. Slots are formed in at least one of the end portions to aid in the crimping of the hollow metal tube by an annular clamp. A radial flange is formed adjacent the end portion and receives an annular seal therein. A stop for limiting the insertion of a tube section into the end of the hollow metal tube is formed on the inside of the coupler adjacent the radial flange opposite the slots. The annular clamp encircles the slots and is tightened to clamp the end portions to form metal to metal contact between the metal tubes and to form a seal between the annular seal and both metal tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.