Adapter for coupling air duct to fan-driven vent
US6471582B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Aug 14, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F3/167
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An adapter for coupling an air duct having an air duct mating end to a fan-driven vent unit having an air intake opening. The air duct may be a circular cross sectional air duct, for example, and the vent unit may comprise a HEPA or other filter. The adapter has a first mating section compatible with the air duct mating end (e.g., circular) for coupling the adapter to the air duct mating end, and a second mating section for coupling the adapter to the air intake opening of the fan-driven vent unit. Side walls of the adapter, between or part of the first and second mating sections, have supply-relief holes for providing a supply of air to the air intake opening when the air duct provides no air supply (e.g., when it is closed off by a damper system).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.