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    • 55. 发明授权
    • Powder material for rare earth-iron-boron based permanent magnets
    • 稀土 - 铁硼永磁体用粉末材料
    • US5281250A
    • 1994-01-25
    • US838092
    • 1992-02-20
    • Atsushi HamamuraKatsumi OkayamaYuji KanekoYasuhiro OkajimaKaname TakeyaShuji Okada
    • Atsushi HamamuraKatsumi OkayamaYuji KanekoYasuhiro OkajimaKaname TakeyaShuji Okada
    • B22F1/00C22C38/00H01F1/057H01F1/06
    • H01F1/0573H01F1/0571
    • A powder for producing permanent magnets, comprising a blend of powders [A] and [B] or [C] wherein:alloy powder [A] has an R.sub.2 Fe.sub.14 B phase and contains, in atomic percent, from 11 to 13% of at least one rare element, R, inclusive of Y, from 4 to 12% of B, and the balance Fe; or optionally, said powder has an R.sub.2 (Fe,Co).sub.14 B phase, an R.sub.2 (Fe,Ni).sub.14 B phase or an R.sub.2 (Fe,Co,Ni).sub.14 B phase, containing at least one selected from the group consisting of 10% or less of Co and 3% or less of Ni as a partially substitute for Fe;powder [B] is an intermetallic compound having an intermetallic compound phase of R with Fe or Co inclusive of an R.sub.3 Co phase (provided that Co may be partially substituted for by Fe), containing, in atomic percent, from 13 to 45% of at least one rare element, R, inclusive of Y, and the balance Co (provided that Co may be partially substituted for by Fe),powder [C] is an intermetallic compound having an intermetallic compound phase of R with Fe or Co inclusive of an R.sub.3 Co phase (provided that Co may be partially substituted for by Fe) and an R.sub.2 Fe.sub.14 B phase, containing, in atomic percent, from 13 to 45% of at least one rare element, R, inclusive of Y, 12% or less of B and the Co (provided that Co may be partially substituted for by Fe).
    • 一种用于制造永磁体的粉末,其包含粉末(A)和(B)或(C)的混合物,其中:合金粉末(A)具有R2Fe14B相,原子百分比含有11至13%的至少一种 稀有元素R,包括Y,B的4〜12%,余量为Fe; 或任选地,所述粉末具有R2(Fe,Co)14B相,R2(Fe,Ni)14B相或R2(Fe,Co,Ni)14B相,其含有选自10% 以下的Co和3%以下的Ni作为Fe的部分替代物; 粉末(B)是具有与Fe或Co的金属间化合物相的金属间化合物,包括R3Co相(其中Co可以部分被Fe取代),原子百分比含有13〜45%的 至少一种稀有元素R(包括Y)和余量Co(条件是Co可以部分被Fe取代),粉末(C)是金属间化合物的金属间化合物,其中R与Fe或Co包括 R3Co相(其中Co可以被Fe部分取代)和R2Fe14B相,其中原子百分比含有13至45%的至少一种稀有元素R,包括Y,12%或更少的B和 Co(Co可以部分地被Fe代替)。
    • 57. 发明授权
    • Apparatus for detecting presence of person inside room having door
    • 检测室内人员存在的装置
    • US5153560A
    • 1992-10-06
    • US752099
    • 1991-08-29
    • Masahiro Ichikawa
    • Masahiro Ichikawa
    • G01V9/00G08B13/16G08B13/19
    • G08B13/1681G08B13/19
    • An apparatus for detecting the presence of a person or persons inside a room having a door. The apparatus comprises a pyroelectric infrared sensor and a piezoelectric air pressure sensor. The infrared sensor detects movement of a person and produces a signal indicating the movement. The air pressure sensor detects opening and closing of the door and produces a signal indicating the opening and closing. A logic device including monostable multivibrators, AND gates, and an OR gate is connected between the outputs of the two sensors. When the signal indicating the movement is applied to the logic device later than the signal indicating the opening and closing, the logic device produces a signal indicating the entry of a person. When the signal indicating the opening and closing is applied to the logic device later than the signal indicating the movement, the logic device produces a signal indicating the exit of a person. These signals are processed by the logic device to know the presence or absence of a person.
    • 一种用于检测具有门的房间内的人员的存在的装置。 该装置包括热电红外传感器和压电空气压力传感器。 红外线传感器检测人的移动并产生指示移动的信号。 空气压力传感器检测门的打开和关闭,并产生指示打开和关闭的信号。 包括单稳态多谐振荡器,与门和OR门的逻辑器件连接在两个传感器的输出端之间。 当指示运动的信号晚于指示开启和关闭的信号到逻辑设备时,逻辑设备产生指示人的进入的信号。 当指示开启和关闭的信号晚于指示移动的信号到逻辑设备时,逻辑设备产生指示人的退出的信号。 这些信号由逻辑设备处理以知道人的存在或不存在。
    • 58. 发明授权
    • Magnetic disc
    • 磁盘
    • US5006388A
    • 1991-04-09
    • US227800
    • 1988-08-03
    • Ryuichi KuzuoAtsushi KawamotoJunya TadaKenji OhmoriHiroko Sekiya
    • Ryuichi KuzuoAtsushi KawamotoJunya TadaKenji OhmoriHiroko Sekiya
    • G11B5/64G11B5/73
    • G11B5/7325G11B5/64Y10S428/90Y10S428/928Y10T428/12465Y10T428/12931
    • Disclosed are magnetic discs having (A) a Cr-layer, as a lower layer, which has a composition comprising (1) substantially Cr or (2) 10% by weight or less of one or more selected from Cu, Nb, Ti, V, Zr, Mo, Zn, W and Ta, and a balance of being substantially Cr, and (B) a magnetic recording medium layer, as an upper layer, which has a composition comprising (1) substantially Co, (2) 30% by weight or less of Ni and a balance of being substantially Co, (3) 10% by weight or less of one or more selected from Y, La, Ce, Pr, Nd, Sm, Gd, Tb and Dy, and a balance of being substantially Co, (4) 30% by weight or less of Ni, 10% by weight or less of one or more selected from Y, La, Ce, Pr, Nd, Sm, Gd, Tb and Dy, and a balance of being substantially Co, (5) 10% by weight or less of one or more selected from Cu, Nb, Ti, V, Cr, Zr, Mo, Zn, W and Ta, and a balance of being substantially Co, (6) 30% by weight or less of Ni, 10% by weight or less of one or more selected from Cu, Nb, Ti, V, Cr, Zr, Mo, Zn, W and Ta, and a balance of being substantially Co, (7) 10% by weight or less of one or more selected from Y, La, Ce, Pr, Nd, Sm, Gd, Tb and Dy, 10% by weight or less of one or more selected from Cu, Nb, Ti, V, Cr, Zr, Mo, Zn, W and Ta, and a balance of being substantially Co, or (8) 30% by weight or less of Ni, 10% by weight or less of one or more selected from Y, La, Ce, Pr, Nd, Sm, Gd, Tb and Dy, 10% by weight or less of one or more selected from Cu, Nb, Ti, V, Cr, Zr, Mo, Zn, W and Ta, and a balance of being substantially Co, both as formed on a non-magnetic substrate, except those where the lower layer has the composition (1) and the upper layer has the composition (1) or (2) as well as those where the lower layer has the composition (1) and the upper layer has the composition (5) or (6) containing only one or more of Cr, Ta and/or W. The magnetic discs have noticeably improved magnetic characteristics and/or corrosion-resistance.