公开(公告)号：US4862774A

公开(公告)日：1989-09-05

申请号：US159934

申请日：1988-02-24

申请人： Frederick A. Else ,  John Green

发明人： Frederick A. Else ,  John Green

IPC分类号： B25B23/04 ,  B23P19/00 ,  B25B23/10

CPC分类号： B23P19/006 ,  B25B23/10

摘要： A screwholder device comprising jaws which form two halves of an axial passageway down which a screw is driven. The jaws are hinged at the rearmost end and resiliently held together by a narrowing at the front exit ends. The screw is driven down the passageway and is held by the jaw ends while being driven to a certain extent into a surface, and the screwhead pushes the jaws apart to allow the screw to exit from the device during final securement of the screw.