Invention Grant
- Patent Title: Hollow ended four-way socket wrench
- Patent Title (中): 中空四通套筒扳手
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Application No.: US618811Application Date: 1990-11-27
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Publication No.: US5020398APublication Date: 1991-06-04
- Inventor: James M. Leu
- Applicant: James M. Leu
- Assignee: Leu James M
- Current Assignee: Leu James M
- Main IPC: B25B13/00
- IPC: B25B13/00 ; B25G1/04 ; B60B29/00
Abstract:
An improved four-way socket wrench includes elongated socket members having a lower tubular portion connected between a socket head portion and a cross bar member, the lower tubular portion having an axial bore therein that is in communication with the socket opening of the socket member. Rigid implements can be inserted into the socket member so as to impart increased leverage thereto so as to, in turn, impart increased rotational torques to a nut being tightened or loosened.
Public/Granted literature
- US4608480A Process and apparatus for laser drilling Public/Granted day:1986-08-26
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