Oscillating louver electric fan heater

Patent 4743739 Issued on May 10, 1988. Estimated Expiration Date:

February 20, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

697448

2018535

2036597

2037250

2124716

2768782

3173478

3380372

Oscillated louver assembly for breeze box fan
Patent #: 4084491
Issued on: 04/18/1978
Inventor: Spotts, et al.

Ventilating fans
Patent #: 4217816
Issued on: 08/19/1980
Inventor: Mancinelli

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Inventor

Tateishi, Arthur K.

Application

No. 06/831190 filed on 02/20/1986

US Classes:

392/365, Portable165/99, Discharge grille or diffuser415/125, INCLUDING MEANS TO CAUSE CYCLICAL MOVEMENT OF A PART (E.G., BLADE, VALVE, ETC.)416/100, Continuous rotor oscillation417/361, Pump and motor unitarily adjustable relative to fixed support454/285, Sweeping type454/319Plural vanes pivoting about individual axes

Examiners

Primary: Bartis, Anthony

International Classes

F24F 13/15 (20060101)
F24H 3/04 (20060101)

Abstract

A fan heating includes a stationary housing and a louvre blade assembly having at least one oscillating louvre blade located forwardly in the housing for providing multidirectional hot air flow from the heater. The heater further includes a drive system for the louvre blade assembly with the drive system itself including lightweight plastic drive gears located rearrwardly in the housing and a lightweight plastic connecting shaft extending forwardly from the drive gears to the louvre blade assembly. Positioned between the louvre blade assembly and the drive gears are an electric heating element for providing the hot air and a fan blade for circulating the hot air which is operated from a motor also operating the drive gears through a rubber drive belt. The drive gears and belt are located in said housing laterally outwardly away from the heating element. The fan blade is positioned to move the hot air forwardly from the heating element to the louvre blades and away from the drive gears and to move cooling air to the drive gears and connecting shaft to prevent heat related damage thereto.