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11. 发明专利

AU2441299A Screwdriver bit and its combination with screw 未知
公开(公告)号：AU2441299A
公开(公告)日：1999-09-15
申请号：AU2441299
申请日：1999-02-23
申请人： TOTSU KATSUYUKI
发明人： TOTSU KATSUYUKI
IPC分类号： B25B15/00 , F16B23/00
摘要： A screwdriver bit (50) fitted to a screw wherein generally vertical end wall parts of a specified depth are formed in the bit fitting grooves of a screw head part at the end edge parts, a generally flat bottom part is formed directing from the lower edge part of the vertical end wall parts to the center part of a crew neck part, and a conical bottom surface is formed at its center part, comprising flat blade parts (52) forming, at the top end parts, generally vertical end edge parts fitted into the bit fitting grooves of the screw head part along the vertical end wall parts, the top end surfaces of the flat blade parts being formed in a conical protruded part (54) having an inclination angle &thetas; of approx. 1 to 45 DEG relative to the horizontal plane, whereas the screw having stage parts at the end edge parts of the bit fitting grooves of the screw head part, forming inclined groove parts extendedly directing from these stage parts to the center part of the screw neck part, forming a generally conical bottom surface at its bottom part, and forming wall parts recessed inward from a vertical plane at the end edge parts of the bit fitting grooves through a specified depth.

12. 发明专利

AU3275897A Screw, driver bit and header punch for manufacture of screw 未知
公开(公告)号：AU3275897A
公开(公告)日：1998-05-15
申请号：AU3275897
申请日：1997-06-27
申请人： TOTSU KATSUYUKI
发明人： TOTSU KATSUYUKI
IPC分类号： B25B15/00 , F16B23/00
摘要： A driver bit and a header punch for manufacture of screws comprising a screw comprising substantially vertical end wall portions of predetermined depth formed on an end edge portion of a bit fitting groove on a screw head, non-planar bottom portions raised from lower edge portions of the vertical end wall portions toward a center of the screw head, inclined groove portions extending from raised portions of the non-planar bottom portions toward a center of a screw neck, a substantially conical-shaped bottom surface formed on a bottom of the groove, the bit fitting groove being adapted to a driver bit, which has a blade adapted to be fitted into the bit fitting groove and has a lower edge portion of the blade adapted to abut against the non-planar bottom portions. In this manner, groove portions of a cross groove on the screw are improved in construction, whereby it is possible to effectively prevent a driver bit from coming out, prevent breakage of screws caused in the prior art, always achieve an appropriate and rapid screw fastening work even when the cross groove of the screw is broken, and to significantly enhance an efficiency in work.

13. 发明专利

DE69014019T2 未知
公开(公告)号：DE69014019T2
公开(公告)日：1995-03-23
申请号：DE69014019
申请日：1990-08-25
申请人： TOTSU KATSUYUKI
发明人： TOTSU KATSUYUKI
IPC分类号： B25B23/10 , B23P19/00
摘要： An automatic screw driver and a method for controlling the same, characterized by a fluid chamber (56) in which a suction force is developed so as to retain stably a screw (S) at a predetermined position irrespective of kind of material for the screw preparatory to a screwing operation of the driver, and a control circuit including a plurality of timers (T64,T66,T68,T70,T72) in order to perform a sequential operation consisting of steps of supplying the screw at the tip end of a bit (14), retaining perpendicularly the screw there and entering a standby state for the screwing operation, and actuating a driver when the sequential operation is completed, so that the screwing operation is facilitated and stabilized, resulting in a considerable improvement in the efficiency thereof.

14. 发明专利

DE2650218C2 未知
公开(公告)号：DE2650218C2
公开(公告)日：1987-10-15
申请号：DE2650218
申请日：1976-11-02
申请人： TOTSU, KATSUYUKI, TOKIO/TOKYO, JP
发明人： TOTSU, KATSUYUKI, TOKIO/TOKYO, JP
IPC分类号： B25B23/151 , B25B21/00 , B25B23/14

15. 发明专利

CA1090628A ELECTRICALLY DRIVEN FASTENING APPLIANCE 未知
公开(公告)号：CA1090628A
公开(公告)日：1980-12-02
申请号：CA306874
申请日：1978-07-06
申请人： TOTSU KATSUYUKI
发明人： TOTSU KATSUYUKI
IPC分类号： B25B23/147 , B25B23/157
摘要： : An electrically operated fastening appliance with an automatic controlling clutch mechanism by which on termination of the fastening operation the power transmission from the motor (13) to the driving spindle (36) is instantly discontinued to prevent application of the excessive torque to the screw-threaded connecting means to be tightened and transmission of undesired reversing torque. The automatic controlling clutch mechanism includes a central gear (40) secured to a drive shaft (38) derived from the motor(13), planetary gears (30) supported on a planet carrier (32) and an annulus member (29) with an internal gear (28) accommodated turnably in a cylindrical casing (14) and clutch elements interposed between the annulus member (29) and the casing (14).

16. 发明专利

BE868823A 未知
公开(公告)号：BE868823A
公开(公告)日：1978-11-03
申请号：BE189139
申请日：1978-07-07
申请人： TOTSU KATSUYUKI
IPC分类号： B25B21/00 , B25B23/147 , B25B23/157 , F16D7/06 , F16D7/08 , F16H1/28 , B25B

17. 发明专利

IT7825448D0 未知
公开(公告)号：IT7825448D0
公开(公告)日：1978-07-07
申请号：IT2544878
申请日：1978-07-07
申请人： TOTSU KATSUYUKI
IPC分类号： B25B23/147 , B25B23/157 , G01L
摘要： An electrically operated fastening appliance with an automatic controlling clutch mechanism by which on termination of the fastening operation the power transmission from the motor (13) to the driving spindle (36) is instantly discontinued to prevent application of the excessive torque to the screw-threaded connecting means to be tightened and transmission of undesired reversing torque. The automatic controlling clutch mechanism includes a central gear (40) secured to a drive shaft (38) derived from the motor (13), planetary gears (30) supported on a planet carrier (32) and an annulus member (29) with an internal gear (28) accommodated turnably in a cylindrical casing (14) and clutch elements interposed between the annulus member (29) and the casing (14).

18. 发明专利

CA1006606A MOTOR-DRIVEN SCREW DRIVER WITH AUTOMATIC STOPPING MEANS 未知
公开(公告)号：CA1006606A
公开(公告)日：1977-03-08
申请号：CA171817
申请日：1973-05-18
申请人： TOTSU KATSUYUKI , SHIMIZU TOSHIMASA
发明人： TOTSU KATSUYUKI , SHIMIZU TOSHIMASA
IPC分类号： B25B23/147 , H02P29/00

19. 发明专利

CA912318A ELECTRICALLY OPERATED SCREW DRIVER 未知
公开(公告)号：CA912318A
公开(公告)日：1972-10-17
申请号：CA912318D
申请人： TOTSU KATSUYUKI
发明人： TOTSU KATSUYUKI
IPC分类号： B25B21/00 , B25B23/10 , B25B23/14 , B25B23/142

20. 发明专利

GB1234798A IMPROVEMENTS IN OR RELATING TO DETACHABLE BITS FOR SCREWDRIVERS 未知
公开(公告)号：GB1234798A
公开(公告)日：1971-06-09
申请号：GB2949868
申请日：1968-06-20
申请人： TOTSU KATSUYUKI
发明人： TOTSU KATSUYUKI
IPC分类号： B25B23/00 , B25B23/10
摘要： 1,234,798. Screwdrivers. K. TOTSU. 20 June, 1968 [24 June, 1967; 6 March, 1968], No. 29498/68. Heading B3N. A screwdriver has a detachable bit 4 which is inserted into an aperture at the end of a shank 1 and has resilient means projecting laterally therefrom for resiliently engaging the aperture to retain the bit. The shank 1 has a transverse slot 2 which is intersected by an axial bore 3 (Figs. 2, 8) or has formed therein axiallyextending recesses 18, 19 (Figs. 16, 19). The bit 4 comprises a rectangular blade portion 5 which has a bent tail portion 6 (Figs. 17a, 17b), a pressed-out central part 13 (Figs. 12a, 12b) or a welded-on strip (Fig. 13, not shown) for engaging in the bore 3 or recess 18. One edge 15 of the bit may be of reduced thickness so that the bit is reversible for use with screws of different sizes. A resilient strip 20 or 21 may be welded to one side of the bit for frictionally engaging in the slot of a screwhead so as to hold the screw, and a protuberance 8 may be provided on the driving edge of the bit for centring the bit in a screw having a slot with a central aperture. The central part of the driving edge of the bit adjacent the pressed-out part 13 may be cut away to form two spaced blade portions 17 (Fig. 19). A plastics sleeve 23 (Fig. 22) may be fitted around the shank 1 for holding a screw. An annular recess 25 locates the sleeve 23 and the exterior of the shank is threaded to facilitate fitting and removal of the sleeve.

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