公开(公告)号：US4959568A

公开(公告)日：1990-09-25

申请号：US893481

申请日：1986-08-05

Applicant: Brian P. Stokes

Inventor： Brian P. Stokes

IPC: H02K49/00 ,  B06B1/04

CPC classification number: B06B1/04

Abstract: An element that moves resonantly has its resonant frequency dynamically tuned to a desired frequency by two components that cooperate via magnetic fields, one component being mounted for motion with the moving element.

Abstract translation: 共振的元件将其谐振频率通过两个通过磁场协调的部件动态地调谐到期望的频率，一个部件被安装成与移动元件一起运动。

公开(公告)号：US06633101B2

公开(公告)日：2003-10-14

申请号：US09891478

申请日：2001-06-26

Applicant: Brian P. Stokes

Inventor： Brian P. Stokes

IPC: H02K304

CPC classification number: H02K26/00

Abstract: A torque motor configuration that minimizes off-axis magnetic forces emanating from adjacent energized coils acting on a magnet. The motor includes a stator comprising a sleeve with conductive coils disposed thereon, and the stator further defining a rotor opening, and a rotor disposed in the rotor opening comprising a magnet disposed on a shaft with the sleeve being shorter than the magnet and the coils including turn around zones beyond respective ends of the sleeve. The motor may be incorporated into an optical scanning system including optical elements for detecting light from a light source.

Abstract translation: 一种扭矩电机结构，其最小化作用在磁体上的相邻电磁线圈产生的离轴磁力。 所述电动机包括定子，所述定子包括具有设置在其上的导电线圈的套筒，并且所述定子还限定转子开口，以及设置在所述转子开口中的转子，其包括设置在轴上的磁体，所述套筒比所述磁体短，所述线圈包括 在套筒的相应端部之外转动区域。 电动机可以结合到包括用于检测来自光源的光的光学元件的光学扫描系统中

公开(公告)号：US06509996B2

公开(公告)日：2003-01-21

申请号：US09891477

申请日：2001-06-26

Applicant: Brian P. Stokes

Inventor： Brian P. Stokes

IPC: G02B2608

CPC classification number: H02K7/14 ,  G02B7/1821 ,  G02B26/10

Abstract: A positioning assembly including a motor, a position sensor, an isolator for coupling the motor to the sensor. The motor may have all surface areas, except that surface area coupled to the sensor via the isolator, exposed to a cooling medium such as air. In an exemplary embodiment, the present invention may be utilized in an optical scanning system.

Abstract translation: 一种定位组件，包括马达，位置传感器，用于将马达耦合到传感器的隔离器。 马达可以具有所有的表面区域，除了通过隔离器耦合到传感器的表面积，暴露于诸如空气的冷却介质之外。 在示例性实施例中，本发明可以用在光学扫描系统中。

公开(公告)号：US5099386A

公开(公告)日：1992-03-24

申请号：US698867

申请日：1991-05-13

Applicant: Brian P. Stokes ,  Pierre Brosens ,  Stephen O'Dea ,  Albert K. Bukys ,  Steven M. Burgarella ,  Jean I. Montagu

Inventor： Brian P. Stokes ,  Pierre Brosens ,  Stephen O'Dea ,  Albert K. Bukys ,  Steven M. Burgarella ,  Jean I. Montagu

IPC: G01R27/26 ,  H01G5/013 ,  H01G5/06

CPC classification number: H01G5/0138

Abstract: A variable-capacitance transducer detects the angular position of a rotatable member. The transducer includes a first capacitance plate having a plurality of electrically conductive capacitance electrodes, a second capacitance plate spaced therefrom, and a dielectric element located between the plates. At least two of the electrodes are interconnected by a conductive trace. The dielectric element or one of the plates is fixedly mounted on the rotatable member. The electrodes on the first capacitance plate, in conjunction with the second capacitance plate, form a plurality of capacitances that vary as the angular position of the rotatable member changes. A conductive guard partially envelopes the conductive trace and a conductive guard partially envelopes the electrodes on the first capacitive plate. A spacer defines the distance between the capacitance plates and has a coefficient of thermal expansion and dimensions that cause the distance between the capacitance plates to vary by an amount calculated to compensate for changes in plate area with temperature. The transducer includes a parasitic capacitor plate having a position that is adjustable to compensate for parasitic capacitance. An electromagnetic shield is constructed and positioned, with respect to a driver that controls the rotatable member, such that the shield tends to prevent electromagnetic radiation from the driver from affecting the capacitances between the capacitance plates.

Abstract translation: 可变电容换能器检测可旋转构件的角位置。 换能器包括具有多个导电电容电极的第一电容板，与其间隔开的第二电容板和位于板之间的介电元件。 至少两个电极通过导电迹线相互连接。 电介质元件或其中一个板固定地安装在可旋转构件上。 第一电容板上的电极与第二电容板一起形成随着可旋转构件的角位置变化而变化的多个电容。 导电保护件部分地包封导电迹线，并且导电保护部分地包围第一电容板上的电极。 间隔件限定了电容板之间的距离，并且具有导致电容板之间的距离变化的量的热膨胀系数和尺寸，以补偿板面积随温度的变化。 换能器包括一个寄生电容器板，其具有可调节的位置以补偿寄生电容。 相对于控制可旋转构件的驱动器构造和定位电磁屏蔽，使得屏蔽件倾向于防止来自驱动器的电磁辐射影响电容板之间的电容。