Air flow louver system
US4892288A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | Jan 9, 1990 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/3492
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An adjustable louver unit for controlling the quantity and/or direction of the air flow in air systems, such as heaters, air conditioners and the like. This louver unit includes a rotary vane assembly having a central longitudinal shaft. A blade perpendicular and radial to the shaft, and containing circular vanes projecting from the blade and at an angle to the longitudinal axis of the central shaft. This entire rotary vane array, comprising a single member is molded from a continuous unitary material having a central shaft, a radial blade and a plurality of vanes, all having been formed from flexible plastic resin, which provides for ease of assembly, durability, simplicity, and efficiency of operation. The vane array is installed in a rigid louver frame, (having concentrically curved inner longitudinal surfaces), in a manner to permit simplicity of installation, and ease of directional adjustment, and without the need for conventional sealing materials of any kind, such as felt, or foamed rubber strips glued to the bezel and thus shutting the air off when the edges of the central blade of the rotor come in contact with the felt or foam strips to permit complete shut off of the ai…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.