Crawl space ventilation system
US4829882A · kind A · utility
Inventor
Key dates
| Filing date | Dec 31, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Dec 31, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F7/007
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A crawl space ventilation system includes an intake fan assemby (10) having a housing with an 8.times.15 inch tubular mounting portion (b 16), a jet-stream directing portion (30) which is substantially smaller than the mounting portion, and an electric fan mounted in the housing for driving air toward the jet-stream directing portion. The mounting portion is mounted in a crawl-space vent hole with the jet portion directed into the crawl-space toward a particular area to be ventilated. The crawl-space ventilation system also includes an outlet fan assembly (44) with an approximately 8.times.15 inch housing (46) and a jet-catching end (51). The outlet fan assembly also is mounted in a crawl space vent and is positioned to capture the air jet driven into the crawl space by the inlet fan assembly. Intermediate booster fan assemblies (70, 72) are also included to be mounted in the crawl space between vents for capturing and transmitting the jet stream between the inlet and outlet fan assemblies. Humidistats control the various fan assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.