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21. 发明专利

JPH06178784A IMPLANT FOR ARTIFICIAL TOOTH 失效
公开(公告)号：JPH06178784A
公开(公告)日：1994-06-28
申请号：JP33149992
申请日：1992-12-11
申请人： AOYAMA SEISAKUSHO , UEDA MINORU
发明人： KAJINO HIROSHI , KONDO SHINICHI , UEDA MINORU
IPC分类号： A61C8/00
摘要： PURPOSE:To improve the install work and the fixing efficiencies by engaging the abutment engaging part of a fixture with the engaging recess part of an abutment, and fastening those parts on the upper part of a shaft cylinder of the fixture to be united in a body from a screw hole of the abutment by means of an abutment screw. CONSTITUTION:A fixture 1 is so constructed that a fixture thread part 5 which has an included angle of thread of 42 to 47 and has plural valleylike notches 4 on the circumference of the ridge is formed on the outer peripheral surface of a shaft cylinder 2 for forming an inner screw part 3. A star abutment engaging part 6 is formed on the upper part of the shaft cylinder 2. On the other hand, an abutment 11 is so constructed that a connecting short leg cylinder part 15 wherein an engaging recess part 14 having its shape corresponding to that of the abutment engaging part 6 is formed is connected to the lower end of a bottomed cylinder 12 having a screw hole 13 at the base. The abutment engaging part 6 and the engaging recess part 14 are engaged with each other to be placed and supported, and fastened to be united in a body from a screw hole 13 to the inner screw part 3 by an abutment screw.

22. 发明专利

JPS56148175A SPLIT TWO-PHASE POWER DRIVE CHOPPER DEVICE 失效
公开(公告)号：JPS56148175A
公开(公告)日：1981-11-17
申请号：JP5160080
申请日：1980-04-21
申请人： HAYASHI KAZUHIKO , KAN KEIKI , UEDA MINORU
发明人： HAYASHI KAZUHIKO , KAN KEIKI , UEDA MINORU
IPC分类号： H02M3/135 , H02M3/10
摘要： PURPOSE:To reduce unbalances of a pulsation factor and a phase current between a stringing current and a motor current by a method wherein coupling reactors are inserted in series in DC motor groups divided into two groups, respectively, and four pairs of electronic switches are inserted in series connected terminals, respectively. CONSTITUTION:The coupling reactors LC are inserted in series in the respective series connected DC motor groups whcich are divided into the two groups, and the four pairs of the electronic switches S1, S2, S1', S2' are inserted in the respective series connected terminals. By feeding control signals to the electronic switches S1- S2' to be turned ON-OFF by two phases, average voltages applied to the respective motor groups are continuously controlled extending over the whole range from zero to a power voltage ES, including series-parallel controls of the two groups, and the loads on the respective motors are designed to uniformly be alloted. For example, armatures M of the eight series-wound motors and magnetic field windings F of the electric car are connected as an equivalent circuit shown in the diagram to chopper- control as mentioned above using thyristors as the electronic switches S1-S2'.

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