# US 7,744,340 B2 · Linear fan

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- Number: US 7,744,340 B2
- Document ID: US7744340B2
- Status: Granted
- Kind: B2
- Application number: 11/818,961
- Filed: 2006-04-25
- Published: 2009-01-29
- Granted: 2010-06-29
- Earliest claimed: 2006-04-25
- Inventors: Yefim Levin; Vadim Levin
- Web page: https://patentgrep.com/patent/US7744340B2

## CPC

- F04D 33/00: Non-positive-displacement pumps with other than pure rotation, e.g. of oscillating type (F04D35/00 takes precedence; hand-held fans A45B)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)

## Abstract

The linear fan comprises blades that are fixed onto a flexible transmission engaging leading and follower pulleys. Each blade has cylindrical shanks to facilitate swivel fixation. The veer of the blades is provided with directive disks.

## Claims

### Claim 1

The linear fan comprising plurality of blades pivotally connected with two endless belts, both supported by two pulleys with their shafts bearing eccentric sockets which, in turn, bear rotating directive discs that mechanically contact the blades' edges providing veer of the blades and, at the same time, enabling rotation of the said discs.