Electric synchronous motor
    1.
    发明授权
    Electric synchronous motor 失效
    电动同步电机

    公开(公告)号:US5448123A

    公开(公告)日:1995-09-05

    申请号:US324528

    申请日:1994-10-18

    IPC分类号: H02K1/27 H02K1/22

    CPC分类号: H02K1/2733

    摘要: An electric synchronous motor having a stator (10) with electric windings (14) and a rotor (16) which comprises a spindle (20) and a magnetic core (22), wherein the core (22) is formed by a number of annular magnetic discs (21) piled on the spindle (20) and having a length-to-diameter ratio exceeding 3. The discs (21) are insulated electrically from each other by layers of an inorganic material (17), such as an aluminum foil layer which is oxidized on both sides, and are axially clamped between shoulders (23, 24) on the spindle (20) to a high prestress level for obtaining a high bending strength, i.e. a higher coefficient of elasticity, of the rotor (16) as a whole.

    摘要翻译: 一种电动同步电动机,具有具有电动绕组(14)的定子(10)和包括主轴(20)和磁芯(22)的转子(16),其中所述铁心(22)由多个环形 磁盘(21)堆叠在主轴(20)上并且具有长度与直径之比超过3.盘(21)通过无机材料(17)的层彼此电绝缘,例如铝箔 层,其在两侧被氧化,并且被轴向夹紧在主轴(20)上的肩部(23,24)之间以达到高预应力水平,以获得转子(16)的较高的弯曲强度,即较高的弹性系数, 作为一个整体。

    Method for tightening threaded joints
    2.
    发明授权
    Method for tightening threaded joints 失效
    拧紧螺纹接头的方法

    公开(公告)号:US5216795A

    公开(公告)日:1993-06-08

    申请号:US913743

    申请日:1992-07-14

    申请人: Gunnar C. Hansson

    发明人: Gunnar C. Hansson

    摘要: A method for tightening threaded joints by applying torque on the joint by means of a power tool until a predetermined pretension level in the joint is reached, whereupon a controller means connected to the power tool is arranged on one hand to initiate power shut-off and on the other hand to initiate continued successively decreasing power supply to the tool as the predetermined pretension level is passed.

    摘要翻译: 一种用于通过用电动工具在接头上施加扭矩来紧固螺纹接头的方法,直到达到接头中的预定的预紧力水平为止,因此一方面设置连接到电动工具的控制器装置以启动电力切断和 另一方面是当预定的预张力水平通过时,继续连续地减小对工具的供电。

    Overspeed safety device
    3.
    发明授权
    Overspeed safety device 失效
    超速安全装置

    公开(公告)号:US4298317A

    公开(公告)日:1981-11-03

    申请号:US82575

    申请日:1979-10-09

    申请人: Gunnar C. Hansson

    发明人: Gunnar C. Hansson

    摘要: In a pneumatically powered grinding machine provided with a flyweight operated speed governor there is incorporated an independently operating overspeed safety device which in case of malfunction of the speed governor is intended to obstruct further motive air supply to the motor of the machine. The overspeed safety device comprises an annular valve disk having two centrifugal weights which together with a suspender plate form a latch means by which the valve disk is kept in its open position at motor speeds not exceeding a predetermined level. In its open position, the valve disk is elastically bent about a diameter line as a result of the latch engagement between the centrifugal weights and the suspender plate. When the predetermined speed limit is reached, the valve disk is released from the suspender plate to occupy, while resuming its original flat shape, an air supply obstructing, closed position. The safety device is not resettable without dismantling the machine.

    摘要翻译: 在设置有飞行式调速器的气动磨床中,结合有独立操作的超速安全装置,其在调速器故障的情况下旨在阻止对机器的电机的进一步的动力空气供给。 超速安全装置包括具有两个离心重块的环形阀盘,其与悬挂板一起形成锁定装置,通过该闩锁装置,阀盘以不超过预定水平的电动机速度保持在其打开位置。 在其打开位置,由于离心重块和悬吊板之间的闩锁接合,阀盘围绕直径线弹性弯曲。 当达到预定速度限制时,阀盘从悬挂板释放以占据,同时恢复其原始平面形状,供气阻塞,关闭位置。 安全装置在不拆卸机器的情况下不可重置。

    Power tool for two step tightening of screw joints
    5.
    发明授权
    Power tool for two step tightening of screw joints 失效
    电动工具用于两步拧紧螺纹接头

    公开(公告)号:US4881435A

    公开(公告)日:1989-11-21

    申请号:US146711

    申请日:1988-01-21

    申请人: Gunnar C. Hansson

    发明人: Gunnar C. Hansson

    摘要: A power tool for two step tightening of screw joints comprising a housing (10; 50), a rotation motor supported in said housing (10; 50), an output spindle (13, 54) rotated by said motor and connectable to a screw joint to be tightened, a power transmission including a clutch means (16-18, 25; 58, 60, 67) incorporated between said motor and said output spindle (13; 54), and power supply means connecting said motor to a power source. The clutch means (16-18, 25; 58, 60, 67) comprises a shift means (31; 84, 85) by which the mode of operation of the clutch means (16-18, 25; 58, 60, 67) is shiftable between a torque responsive releasing action during the first, high speed step of the tightening process and a non-releasing action during the second, low speed step of the tightening process, and a release detecting means (23; 83) associated with said clutch means (16-18, 25; 58, 60, 67) and arranged to act upon said power supply means to cause at least a substantial reduction in the power supply to the motor as said clutch means (16-18, 25; 58, 60, 67) is released during the first, high speed step of the tightening process.

    Two-speed power tool
    6.
    发明授权
    Two-speed power tool 失效
    双速电动工具

    公开(公告)号:US4834192A

    公开(公告)日:1989-05-30

    申请号:US63587

    申请日:1987-06-17

    申请人: Gunnar C. Hansson

    发明人: Gunnar C. Hansson

    IPC分类号: B23Q5/14 B25B21/00 B25B23/157

    CPC分类号: B23Q5/142 B25B21/008

    摘要: A two-speed power tool having a rotation motor supported in a housing (10) and driving an output spindle via three planetary reduction gears (13, 25, 22). The ring gear (17) of a first planetary gear (13) is rotatable relative to the housing (10) as well as axially displaceable between a high speed position and a low speed position. A friction coupling (37) is associated with the housing (10) and the ring gear (17) of the first planetary gear (13) to lock the latter against rotation either relative to the planet wheel carrier (16) of the first planetary gear (13) when occupying its high speed position or relative to the housing (10) when occupying its low speed position. The ring gear (22) of a second planetary gear (19) which is located after the first planetary gear (13) is rotatable relative to the housing (10) and cooperates with a cam (40, 41) to shift the first planetary gear ring gear (17) against the action of a spring (32) from the high speed position to a low speed position as a certain reaction torque threshold level in the second planetary gear ring gear (22) is exceeded. The cam (40, 41) also provides a torque responsive release function which comes into operation at a reaction torque level corresponding to the desired maximum output torque of the tool.

    摘要翻译: 一种双速电动工具,其具有支撑在壳体(10)中的旋转电动机,并且经由三个行星减速齿轮(13,25,22)驱动输出主轴。 第一行星齿轮(13)的齿圈(17)可相对于壳体(10)旋转,并且可在高速位置和低速位置之间轴向移动。 摩擦联接器(37)与第一行星齿轮(13)的壳体(10)和环形齿轮(17)相关联,以将其摩擦联接器(37)相对于第一行星齿轮(13)的行星轮架(16) (13)当占据其高速位置时或相对于壳体(10)占据其低速位置时。 位于第一行星齿轮(13)之后的第二行星齿轮(19)的齿圈(22)能够相对于壳体(10)旋转并与凸轮(40,41)配合以使第一行星齿轮 超过了在第二行星齿圈(22)中作为某个反作用转矩阈值水平的弹簧(32)从高速位置到低速位置的作用的环形齿轮(17)。 凸轮(40,41)还提供扭矩响应释放功能,其在对应于工具的期望的最大输出扭矩的反作用力矩水平下投入运行。

    Vibration damped portable impact tool
    7.
    发明授权
    Vibration damped portable impact tool 失效
    振动阻尼便携式冲击工具

    公开(公告)号:US4458416A

    公开(公告)日:1984-07-10

    申请号:US390544

    申请日:1982-06-21

    IPC分类号: B25D17/02 B25D17/24 B26B3/00

    CPC分类号: B25D17/24 B25D17/02

    摘要: A vibration damped portable impact tool comprising a pneumatically powered reciprocating mechanism to which a chisel is connected. In the disclosed tool the chisel is rigidly connected to the piston of the reciprocating mechanism so as to move conjointly therewith. The drive mechanism is arranged in a previously known manner to absorb its own acceleration forces whereby the only vibration forces acting on the tool derive from the chisel in its contact with the work piece. By adapting the spring constant relating to bending of the chisel to the entire mass of the tool such that the resonance frequency of that system is lower than the impact frequency, the vibration forces arising at the working end of the chisel are not transmitted to the tool housing.

    摘要翻译: 一种减震便携式冲击工具,其包括连接有凿子的气动往复机构。 在所公开的工具中,凿子刚性地连接到往复机构的活塞,以便与其一起移动。 驱动机构以先前已知的方式布置以吸收其自身的加速力,由此作用在工具上的唯一振动力在与工件接触的过程中来自凿子。 通过使与凿子的弯曲相关的弹簧常数适应于工具的整个质量,使得该系统的共振频率低于冲击频率,在凿子的工作端产生的振动力不会传递到工具 住房。

    Cabinet for housing electronic equipment connectable to machines or
power tools for performing operations
    8.
    发明授权
    Cabinet for housing electronic equipment connectable to machines or power tools for performing operations 失效
    用于住宅电子设备的机柜,可连接到用于执行操作的机器或电动工具

    公开(公告)号:US5568362A

    公开(公告)日:1996-10-22

    申请号:US124970

    申请日:1993-09-21

    申请人: Gunnar C. Hansson

    发明人: Gunnar C. Hansson

    摘要: A cabinet for housing electronic equipment connectable to machines or power tools for performing operations, wherein connections are made with cables provided with single or multi contact connector plugs (19) received by single or multi contact jacks (17). The cabinet comprises a central casing (10), a door (13) and a partition wall (15) defining a connector chamber (16) inside the central casing (10) behind the door (13) and housing the jacks (17), such that the connector plugs (19) and jacks (17) are protected from environmental influence such as dust and/or splashing water or other fluids. The cables (18) extend into the casing (10) through openings (20) at the lower edge of the door (13). A lock (31, 32) on the door (13) enables protection against intentional as well as unintentional disconnection of the cables (18).

    摘要翻译: 一种用于容纳可连接到用于执行操作的机器或电动工具的电子设备的机柜,其中连接是由具有由单个或多个接触插座(17)接收的单个或多个接触连接器插头(19)提供的电缆制成的。 柜体包括中央壳体(10),门(13)和分隔壁(15),其在门(13)后面的中心壳体(10)内限定连接器室(16)并且容纳插座(17), 使得连接器插头(19)和插座(17)被保护免受例如灰尘和/或溅水或其它流体的环境影响。 电缆(18)通过门(13)的下边缘处的开口(20)延伸到壳体(10)中。 门(13)上的锁(31,32)能够防止电缆(18)的有意和无意的断开。

    Method and device for tightening threaded joints
    9.
    发明授权
    Method and device for tightening threaded joints 失效
    拧紧螺纹接头的方法和装置

    公开(公告)号:US5519604A

    公开(公告)日:1996-05-21

    申请号:US299917

    申请日:1994-09-01

    申请人: Gunnar C. Hansson

    发明人: Gunnar C. Hansson

    摘要: A method and a device for tightening threaded joints to a desired pretension level using a manually operated power nutrunner and controlling the tightening process by determining, during a tensioning phase, the instantaneous growth per time unit of the torque resistance from the joint, and adapting continuously the rotation speed of the nutrunner in relation to the determined instantaneous torque growth per time unit so as to obtain the same reaction force characteristics in the nutrunner handle for all joints, regardless of differences in torque resistance growth per angle of rotation between the joints.

    摘要翻译: 一种用于使用手动操作的功率调节器将螺纹接头拧紧到所需预张力水平的方法和装置,并且通过在张紧阶段期间确定来自所述接头的扭矩电阻每时间单位的瞬时增长并且连续适应来控制所述紧固过程 与每个时间单位确定的瞬时转矩增长相关的螺母的旋转速度,以便在每个关节之间的每个旋转角度的扭矩阻力增长的差异中获得与所有关节的螺母扳手相同的反作用力特性。

    Device for tightening threaded joints
    10.
    发明授权
    Device for tightening threaded joints 失效
    拧紧螺纹接头的装置

    公开(公告)号:US5205031A

    公开(公告)日:1993-04-27

    申请号:US840609

    申请日:1992-02-20

    申请人: Gunnar C. Hansson

    发明人: Gunnar C. Hansson

    摘要: A method and a device for tightening threaded joints includes applying torque on the joint by means of a power tool until a predetermined pretension level in the joint is reached, whereupon a controller connected to the power tool is arranged on one hand to initiate power shut-off and on the other hand to initiate continued successively decreasing power supply to the tool as the predetermined pretension level is passed.

    摘要翻译: 用于紧固螺纹接头的方法和装置包括通过电动工具在接头上施加扭矩,直到达到接头中的预定的预紧力水平,由此一方面布置连接到动力工具的控制器以启动动力关闭 - 并且另一方面是当预定的预紧力水平通过时,继续连续地降低对工具的供电。