专利名称：Drain auger
发明人：Fred J. Meyer,Samuel L. Jacks 申请号：US07/530196
申请日：19900529
公开号：US05018234Aabc360
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公开日：
but和however的区别19910528
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摘要：A storage container for a drain cleaning plumbing tool such as a snake or auger having an apertured rear wall is provided with a closure member rotatably mounted to the portion of the rear wall surrounding the aperture. The closure member includes a lever arm and a hook member attached to the radially outer end of the lever arm and a drive rod fixed to said closure member along an axis of rotation. A handle radially offt from said axis of rotation extends axially rearward from said apertured wall. When the hook member engages the handle, a small force sufficient to cau the closure member to rotate cooperates with the lever arm to develop a moment of force sufficient to rotate the storage container and the snake in unison with the rotating closure member developed from the small force insufficient to break the fixed connection between the drive rod and the closure member.剑桥雅思是什么
申请人：MEYER; FRED J.,JACKS; SAMUEL L.
代理人：Robert M. Schwartz,Edward I. Mates
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