Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2002-10-01
2004-06-01
Wyszomerski, George (Department: 1742)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C072S254000, C072S255000, C072S256000, C002S009000, C002S424000, C002S425000
Reexamination Certificate
active
06743312
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
This invention relates to a method of fabricating a ball protective mask, more particularly to a fast processing and forming method in which an aluminum extruded material is cut into slices, which are deburred by punching and then bent into shape, and which are further subjected to annealing at a specific temperature and time. The production process can be streamlined and the masks produced have better smoothness and do not have welding points. Hence, the masks are safe to wear and are more appealing.
(b) Description of the Prior Art
A conventional method of making a protective mask for ball games is as follows:
1. Material forming: A plurality of rod-like or curved iron materials of suitable length and thickness are cut to serve as basic rods and strips for constructing a mask.
2. Welding: The rod materials are welded together by using electric welding or oxy-acetylene flames to form a reticulating web-like protective mask.
3. Coating: Immerse the welded and anti-rust mask into a plastic powder bath.
After drying, a layer of plastic housing forms on the surface of the mask.
However, such a conventional method of making masks suffers the following the drawbacks:
1. As the conventional method uses iron and steel as material, the weight is heavy. In use, wearing a heavy mask is not comfortable during the game. Besides, iron material may rust easily.
2. The use of welding is laborious, and the rate of defective products is also high. Besides, labor costs is high.
3. As the material used in the conventional method is not subjected to any special treatment, the surface strength and the shock-absorbing effect thereof are not good.
However, in the above steps, material cutting, welding and coating all require complicated manual operations, which increase labor costs and lead to higher defective product rate. Besides, the shape and quality cannot be controlled easily.
SUMMARY OF THE INVENTION
Therefore, the primary object of the invention is to provide a method of fabricating a ball protective mask to eliminate the drawbacks of the prior art. According to the invention, specially shaped aluminum extruded material is formed and cut into slices of suitable thickness, which are deburred by punching and bent into shape, thus eliminating the operations of annealing and welding. After formation, the invention is subjected to annealing at a specific temperature and time. The operation is fast and streamlined. Besides, the mask has no welding points to ensure safety during wearing.
REFERENCES:
patent: 3854146 (1974-12-01), Dunning
patent: 5806088 (1998-09-01), Zide et al.
patent: 6497773 (2002-12-01), Shih
patent: 6622364 (2003-09-01), Hamilton et al.
patent: 1394980 (2003-02-01), None
Birch & Stewart Kolasch & Birch, LLP
Combs-Morillo Janelle
Wyszomerski George
Yu Hsun Enterprise Co., Ltd.
LandOfFree
Method of fabricating a ball protective mask 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 fabricating a ball protective mask, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of fabricating a ball protective mask will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3365703