# US 6,296,449 B1 · Multiple current safety fan

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- Number: US 6,296,449 B1
- Document ID: US6296449B1
- Status: Granted
- Kind: B1
- Application number: 09/553,058
- Filed: 2000-04-20
- Granted: 2001-10-02
- Earliest claimed: 2000-04-20
- Inventors: Pierce Wang
- Web page: https://patentgrep.com/patent/US6296449B1

## CPC

- F04D 29/703: {specially for fans, e.g. fan guards}
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)

## Abstract

The present invention relates to a multiple current safety fan, which comprises a body; a motor seat installed in the body, the two sides of the body being separately installed with a locking hole; two screen covers separately installed on the front side and the rear side of the body, the screen covers being annularly and outwardly installed with a plurality of ribs, and the screen covers being reinforced by reinforcing ribs having a U-shape and installed in crisscross. The screen cover on the rear side or the body is indented inwardly. and the interior At the center part of the screen cover is connected to the motor seat inside the body. The leg seat is fastened to the locking holes on the two sides of the body, and the two ends thereof are protruded with two supports. The supports are installed with a plurality of perforated adjustment holes so that the locking holes of the body and the adjustment holes of the supports are used to adjust the height of the body of the electric fan.

## Claims

### Claim 1

A multiple current safety fan, comprising:
a body spherical in shape; two screen covers separately installed on the front side and the rear side of the body, the screen covers being annularly installed with a plurality of ribs;
a motor seat installed on the screen cover on the rear side of the body, the other end of the motor being installed with fan blade;
leg seat fastened on the two sides of the body through a fastening element, the leg seat having an approximately n-shape bottom and the two ends of which being upwardly and protrudedly installed with two supports; characterized in that:
the screen cover on the rear side of the body is installed inwardly, and the indent being connected to the motor seat, thereby providing a protection to the motor seat by the inwardly installed screen cover.

### Claim 2 (depends on 1)

The multiple current safety fan as claimed in claim 1 wherein the two sides of the seat body are installed with locking holes, and the supports of the leg seat are installed with a plurality of perforated adjustment holes.
3.The multiple current safety fan as claimed in claim 1 wherein the two screen covers are installed with reinforcing ribs having an approximately U-shape and installed in crisscross.

### Claim 4 (depends on 1)

The multiple current safety fan as claimed in claim 1 wherein the fan blades connected to the motor seat can be designed into rhomboid or rectangular.