Endless belt power transmission systems or components – System including spaced pulleys interconnected by a belt
Reexamination Certificate
1999-10-06
2003-10-28
Charles, Marcus (Department: 3682)
Endless belt power transmission systems or components
System including spaced pulleys interconnected by a belt
C474S144000, C361S695000, C415S176000
Reexamination Certificate
active
06638192
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an automatic cooling mechanism, and more particularly to an automatic cooling mechanism for an electrical device.
BACKGROUND OF THE INVENTION
Today's electrical devices are required to have high integrations and high performances. Accordingly, some of the electrical elements are often have high temperatures. For example, an automatic document feeder (ADF) is developed to be used with a flatbed scanner. The ADF can automatically feed document sheets one by one to the flatbed scanner to be scanned. However, most of the ADFs are asked to have reduced volumes and increased document-feeding speeds. As a result, a lot of heat is generated by the elements such as the print circuit board of the ADF. Cooling elements made of aluminum or copper, etc. . . . are often used to reduce the temperature. However, the cooling effects are limited. The effect of a cooling cream is also limited. Furthermore, the cooling cream must be coated on the surface of the high-temperature uniformly, otherwise many problems may happen.
A more efficient method is to use a fan to cool the high-temperature element. However, conventional fan is equipped with a motor. The additional motor will also generate heat to increase the temperature within the electrical device. Furthermore, the additional motor will increase the cost.
It is then attempted by the applicant to deal with the above-mentioned problems.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an efficient cooling mechanism for an electrical device.
Another object of the present invention is to provide a cooling mechanism for an electrical device without additional motor.
According to the present invention, an automatic cooling mechanism for an electrical device having a high-temperature element and a rolling shaft is provided. The device includes a fan mounted within the electrical device and a transmission mechanism connected between the fan and the rolling shaft for transmitting rotational kinetic energy from the rolling shaft to the fan to rotate the fan for reducing the temperature of the high-temperature element.
The transmission mechanism preferably includes an elastic element. The elastic element is preferable a belt, a rope, etc. . . .
The electrical device preferably further includes a shell structure for receiving therein the high-temperature element.
The fan may introduce air into the shell structure. Of course, in another embodiment, the air filled within the shell structure is exhausted by the fan.
The electrical device may further includes a hot-wind exist. The hot-wind exist preferably includes a plurality of holes formed on the shell structure.
The electrical device may be an automatic document feeder (ADF). The ADF preferably includes a plurality of rollers mounted on the rolling shaft for feeding thereby a document.
The present invention may best be understood through the following description with reference to the accompanying drawings, in which:
REFERENCES:
patent: 2385152 (1945-09-01), Morrison
patent: 2875626 (1959-03-01), Niederer et al.
patent: 3672160 (1972-06-01), Kim
patent: 3712065 (1973-01-01), Hurst
patent: 4252751 (1981-02-01), Shito
patent: 4531379 (1985-07-01), Diefenthaler, Jr.
patent: 4601684 (1986-07-01), Geary et al.
patent: 4875670 (1989-10-01), Petersen et al.
patent: 5016864 (1991-05-01), Nonami
patent: 5318479 (1994-06-01), Lawroski
patent: 5386823 (1995-02-01), Chen
patent: 5441391 (1995-08-01), Frost et al.
patent: 5745247 (1998-04-01), Yasui et al.
patent: 5871412 (1999-02-01), Moser
patent: 5951257 (1999-09-01), Matson
patent: 6031721 (2000-02-01), Bhatia
patent: 6320745 (2001-11-01), Chen
Charles Marcus
McGuireWoods LLP
Mustek Systems Inc.
LandOfFree
Automatic cooling mechanism for electrical device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic cooling mechanism for electrical device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic cooling mechanism for electrical device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3126014