Fan shroud structure for reducing resonance, improving...

Details Fan shroud structure for reducing resonance, improving... Fan shroud structure for reducing resonance, improving...

2007-01-02

2007-01-02

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

C416S189000

Reexamination Certificate

active

10919942

ABSTRACT:
A fan shroud structure10is constructed and arranged to carry a fan. The fan shroud structure includes a body12having a periphery, a main surface, and an annular rim26defining a generally central opening28. The opening28is sized to accommodate blades of a fan. Fan mounting structure30is coupled with the body and is disposed generally adjacent to the central opening. The fan mounting structure is constructed and arranged to support a motor of a fan. The body includes a plurality of surfaces features34constructed and arranged to affect resonance of the shroud structure with each feature having a surface36that is discontinuous with respect to the main surface38of the body. Each feature34also extends from the annular rim to the periphery of the body.

REFERENCES:
patent: 5489186 (1996-02-01), Yapp et al.
patent: 6106228 (2000-08-01), Bartlett
patent: 6123051 (2000-09-01), Kubina et al.
patent: 6223548 (2001-05-01), Calvert
patent: 6309176 (2001-10-01), Periyathamby et al.
patent: 6474943 (2002-11-01), Kataoka et al.
patent: 6554230 (2003-04-01), Horski

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