专利名称：Screwdriver
发明人：Youn Chyuan Liao 申请号：US09/371960
申请日：19990811
公开号：US06089133A
公开日：
20000718
专利内容由知识产权出版社提供
摘要：The prent invention is related to a screwdriver in which a shaft lever with polygon socket is inrted into the central hole of the screwdriver handgrip so that a turning shaft to facilitate force application is plugged from the rear end of the handgrip into the socket in order to perform a rapid rotation of the shaft lever; the other end of the shaft lever can be connected to a extension shaft to be in a coupled state while an application shaft for screwdriver head can be plugged into the inner hole of the extension shaft, and the screwdriver head is inrted into the socket of the application end of the application shaft to perform screwing, wherein the application shaft for screwdriver head can be designed to be ction-type, and the application shaft can be stretched inside of the connection inner hole of the extension shaft and shaft lever by means of an engaging member fitted to the outer circumference of the extension shaft so that the exposing length is adjustable; in addition, a freely turning sleeve can be mounted between the handgrip and the extension shaft to be a holding supporting point in performing a rapid screwing.
申请人：LIAO; YOUN CHYUAN
更多信息请下载全文后查看
