Invention Grant
US4187746A Power wrench having ratchet means at both surfaces of socket thereof
失效
电动扳手在其插座的两个表面具有棘轮装置
- Patent Title: Power wrench having ratchet means at both surfaces of socket thereof
- Patent Title (中): 电动扳手在其插座的两个表面具有棘轮装置
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Application No.: US876603Application Date: 1978-02-10
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Publication No.: US4187746APublication Date: 1980-02-12
- Inventor: Tsugio Shibata
- Applicant: Tsugio Shibata
- Assignee: Tsugio Shibata
- Current Assignee: Tsugio Shibata
- Main IPC: B25B21/00
- IPC: B25B21/00 ; B25B13/26
Abstract:
The power wrench of this invention which can powerfully hold, twist or turn a bolt, nut or screwhead is characterized in that the torquing end of the wrench has ratchet means at both surfaces thereof. Due to the above construction the fastening and loosening of bolt means can be readily conducted with a minimum effort of replacement of the parts thereof. Furthermore, since the power wrench is provided with a right-angular arrangement, optimal wrenching is effected.
Public/Granted literature
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