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    • 11. 发明授权
    • Shaft drilling rig
    • 轴钻机
    • US4595065A
    • 1986-06-17
    • US567847
    • 1983-12-14
    • Masami WadaShuichi Ajiro
    • Masami WadaShuichi Ajiro
    • E21B7/02E21B15/02E21B15/04E21B19/20
    • E21B7/027E21B15/02E21B15/04E21B19/20
    • A shaft drilling rig with which a shaft is drilled into the earth with a turning force and thrust of drilling imparted to at least the drill bit of a drill string, down to a predetermined depth, and then a new drill string component is added to the drill string, for further drilling.The subject of the present invention lies in enabling the work of adding a new drill string component to the drill string safely and in a reduced time.To solve the above problem, the shaft drilling rig according to the present invention comprises a means of receiving an additional drill string component at least at the bottom end thereof, means of supporting said receiving means so as to be stably movable between a position where a drill string component is to be added and a parking position, and a means of holding the additional drill string component.
    • PCT No.PCT / JP83 / 00156 Sec。 371日期:1983年12月14日 102(e)1983年12月14日日期PCT提交1983年5月23日PCT公布 公开号WO84 / 04778 日期:1984年12月6日。一种竖井钻机,其中一轴被钻入地球,转动力和钻孔推力至少施加到钻柱的钻头,直到预定的深度,然后是新的 将钻柱组件添加到钻柱中,以进一步钻孔。 本发明的主题在于能够安全地并且在缩短的时间内使钻孔柱组件添加到钻柱中。 为了解决上述问题,根据本发明的轴钻机包括至少在其底端处接收附加钻柱部件的装置,其支撑所述接收装置,以便能够稳定地在 要添加钻柱组件和停车位置,以及保持附加钻柱组件的装置。
    • 14. 发明授权
    • Method of making isotropic bonded magnet
    • 制造各向同性粘结磁铁的方法
    • US5464576A
    • 1995-11-07
    • US875290
    • 1992-04-29
    • Fumitoshi YamashitaMasami Wada
    • Fumitoshi YamashitaMasami Wada
    • H01F1/057H01F41/02H02K15/03H05B1/00
    • H02K15/03H01F1/0576H01F41/0266
    • A method of manufacturing an inorganic bonding type rapidly solidified magnet, which is formed by energizing and sintering, after an instantaneous mutual attractive force has been applied intermittently in accordance with the electromagnetic force upon a thin piece shaped rapidly solidified magnet powder in a mold. A thin piece shaped inorganic glass having a thermal expansion ratio 9.times.10.sup.-6 /.degree. C. or less is used as the inorganic coupling agent. The magnet of the present invention having a ring shape, is effective to improve reliability as a rotor magnet in consideration of size, safety, mechanical strength, etc. of the present magnet formed in a ring shape. The electric resistance of the magnet is 10.sup.-3 through 10.sup.-1 .OMEGA.cm and is desirable as a rotor magnet of a PWM driving brushless electric motor.
    • 通过在模具中的薄片状快速凝固的磁体粉末上的电磁力间歇地施加瞬时相互吸引力之后通过激发和烧结形成的无机键合型快速凝固磁体的制造方法。 使用热膨胀率为9×10 -6 /℃以下的薄片状无机玻璃作为无机偶联剂。 考虑到形成为环状的本磁体的尺寸,安全性,机械强度等,具有环形的本发明的磁体对于提高作为转子磁体的可靠性是有效的。 磁体的电阻为10-3〜10-1ΩEGA·cm,作为PWM驱动无刷电动机的转子磁铁是理想的。