A metal shell is composed of a trunk portion and a pair of reinforcing portions provided at opening ends of the trunk portion. The trunk portion is formed of a metallic cylinder, the reinforcing portion is formed of a metallic ring having the same diameter as that of the cylinder, and the ring is joined to at least an opening end of the cylinder.

 
Web www.patentalert.com

< Reflecting plates for resonating chamber

> Drumhead tensioning system, apparatus, and method

> Process for producing and applying a laser heat transfer capable of printing on flat, cylindrical, curved, and irregularly shaped objects
~ 00500