Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Reexamination Certificate
2001-08-03
2002-12-24
Wyszomierski, George (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
C148S518000, C148S528000, C002S425000
Reexamination Certificate
active
06497773
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to masks and more particularly for an improved method of manufacturing masks for team games such as baseball.
BACKGROUND OF THE INVENTION
A conventional process of manufacturing a mask for team games such as baseball is comprised of: cutting the material, (e.g., steel), into a plurality of straight or curved bars of predetermined length; welding the bars to form a wire screen (i.e., unfinished mask); plunging the unfinished mask into a plastic powder for coating; and curing the unfinished mask to produce a finished mask with a layer of plastic coated thereon.
But this is unsatisfactory for the purpose for which the mask is concerned for the following reasons: The weight of a mask manufactured as described above is relatively heavy due to the steel material. A player wearing such a heavy mask may feel uncomfortable. Moreover, the mask tends to rust. The welding step is time consuming. Furthermore, the quality is unsatisfactory: both surface strength and shock absorbability of the mask are low because no special processing on the material is done.
Thus, it is desirable to provide an improved method of manufacturing a mask for team games in order to overcome the above drawbacks.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a method of manufacturing a mask for team games comprised of the following steps: heating an aluminum alloy mixed with copper and molybdenum at a temperature of about 410° C. to about 430° C. for three hours; cooling the alloy at a rate of about 30° C. per hour. The alloy is then cut into a plurality of straight or curved bars of predetermined length.
The mask then produced by a 2 step treatment. T
4
treatment: Heating the bars at a temperature between 450° C. to 550° C. for about one and one half hours; quenching the bars in water at 30° C. after seven seconds have passed.
T
6
treatment: Heating the bars at a temperature between 100° C. to 150° C. for 18 hours; cooling in air; forming an unfinished mask by resistance brazing; and treating the unfinished mask to produce the finished mask by anodized or plastic powder coating.
The above and other objects, features and advantages of the present invention will become apparent from the following detailed description taken with the accompanying drawings.
REFERENCES:
patent: 4699674 (1987-10-01), Finnegan
patent: 6128786 (2000-10-01), Maddux et al.
patent: 6235409 (2001-05-01), Serafin et al.
Bacon and Thomas
Yu Hsun Enterprise Co., Ltd.
LandOfFree
Method of manufacturing a mask for team games does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing a mask for team games, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing a mask for team games will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2932741