Drogue having biased end opening
US6932323B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2004 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Jul 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02G1/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A drogue for drawing an elongated item through a conduit is disclosed. The drogue includes a flexible bag having a closed end and an oppositely disposed end opening. Shroud lines attached to the bag at the end opening allow attachment of the drogue to the item. A biasing member, preferably in the form of a continuous loop of flexible, resilient interconnected wire legs, is attached to the bag and positioned proximate to the end opening. The loop engages the bag over a portion of its length and biases the end opening into an open configuration to prevent its collapse and loss of pneumatic pressure as it is propelled through the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.