Double walled tube with leak display device
US6374863B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2001 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Jul 20, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L2201/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a tube arrangement, comprising at least the following components: a flexible double casing tube, with an inner tube (1) and an outer tube (2), forming a ring gap (3) which opens out into a widened cavity (43), in the vicinity of their ends; a connector (4), arranged at each end of the double casing tube, comprising a flange (42) and a fitting which, in the vicinity of the end of the outer tube (2) and of the cavity (43), has a first annular ring (6) and in the vicinity of the end of the inner tube (1), a second annular ring (5), a dividing chamber (10), between the flange (42) and the first annular ring (6) which is surrounded by a chamber enclosure (11), the chamber (10), furthermore, is connected to the cavity (43) and a drilling (12) exists in the chamber enclosure (11); a signal transmitter, which is arranged at each end of the tube, in the vicinity of the fitting, each one being connected to the drilling in the chamber enclosure by means of a connecter opening. According to the invention, the first signal transmitter is an inflatable container and the second signal transmitter is a lamp with light sticks. Possible embodiments of the tube arrangement, w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.