Portable electric fan assembly
US5163814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1990 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Jun 8, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/38
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A portable electric fan assembly for indoor use includes a base member, an upright electric motor mounted in the base member, an upstanding neck extending from the base member, a substantially vertical drive shaft couple to the motor extending within the upstanding neck, a fan head assembly carried by the neck and having at least a part thereof mounted for limited angular movement so as to be settable at a desired orientation, a fan blade shaft carrying a ban blade protruding forwardly from the movable part of the fan head assembly, and a coupling arrangement for drivably coupling the fan blade shaft to the drive shaft. The coupling arrangement includes a pair of bevelled wheels in mutual frictional engagement in the fan head assembly and mounted on respective input and output shafts disposed substantially at right angles to each other and having a fixed relative orientation to the bevelled wheels, thereby transferring mainly vertical drive motion to mainly horizontal drive motion, and a flexible coupling to accommodate the limited angular movement between the frame head and the neck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.