| 摘要 |
A protective apparatus for compressed gas cylinders which preferably includes a molded thermoplastic cylindrical sleeve having a raised shoulder region on its two ends. Each shoulder region of the sleeve is provided with an external thread for engaging a closure cap. The closure caps are likewise molded thermoplastic cylinders having one end wall and thread engaging means on the internal circumference of their open ends. The top closure cap is preferably provided with a carrying handle. One end of the cylindrical sleeve is provided with an end wall having an opening which permits the passage of a compressed gas cylinder valve but inhibits the passage of a compressed gas cylinder. |
