公开(公告)号：US06719662B2

公开(公告)日：2004-04-13

申请号：US10154198

申请日：2002-05-22

申请人： James L. Forrest ,  Robert Leeper

发明人： James L. Forrest ,  Robert Leeper

IPC分类号： F16H4820

CPC分类号： F16H48/22 ,  F16H48/295 ,  F16H48/30 ,  F16H48/34 ,  F16H2048/346

摘要： A differential assembly including a rotatable casing having an axis of rotation, a selectively energized electromagnet proximal the casing, and a rotatable first clutch disposed within the casing, the first clutch placed in operative engagement with the casing in response to the electromagnet being energized. Relative rotation between the first clutch and the casing is slowed by their being in operative engagement. A rotatable clutch hub and a second clutch are disposed within the casing, and the casing and the clutch hub are rotatably coupled through engagement of the second clutch, which is operatively engaged in response to relative rotation between the first clutch and the casing being slowed. At least one rotatable pinion gear is disposed within the casing and revolves about the axis of rotation. At least one side gear engaged with the pinion gear and rotatable about the axis of rotation is disposed within the casing, and is rotatably coupled to the casing through the second clutch during engagement of the second clutch. Neither of the first clutch and the second clutch is appreciably engaged with the casing in response to gear separating forces exerted between the pinion gear and the side gear.

摘要翻译： 一种差速组件，包括具有旋转轴线的可旋转壳体，靠近壳体的选择性激励的电磁体以及设置在壳体内的可旋转的第一离合器，第一离合器响应于电磁体被通电而与壳体操作地接合。 第一离合器和壳体之间的相对旋转由于它们的操作接合而减慢。 可旋转离合器毂和第二离合器设置在壳体内，并且壳体和离合器毂通过第二离合器的接合而可旋转地联接，第二离合器响应于第一离合器和壳体之间的相对旋转而被可操作地接合而被减速。 至少一个可旋转小齿轮设置在壳体内并围绕旋转轴线旋转。 与小齿轮啮合并能绕旋转轴线旋转的至少一个侧齿轮设置在壳体内，并且在第二离合器接合期间通过第二离合器可旋转地联接到壳体。 响应于施加在小齿轮和侧齿轮之间的齿轮分离力，第一离合器和第二离合器都不能与壳体明显地接合。

公开(公告)号：US06261202B1

公开(公告)日：2001-07-17

申请号：US09373156

申请日：1999-08-12

申请人： James L. Forrest ,  Robert Leeper

发明人： James L. Forrest ,  Robert Leeper

IPC分类号： F16H4822

CPC分类号： F16H48/22 ,  F16D13/24 ,  F16H48/08

摘要： A limited slip differential having at least one cone clutch element for frictionally engaging an interior surface of the rotatable differential casing. The cone clutch element has a plurality of clutch engagement surfaces which are disposed about the outside surface of the cone clutch element. Recessed areas are interposed between the clutch engagement surfaces. The total clutch engagement surface area is reduced to between 5% and 15% of the total engagement and recessed surface area of the clutch element to improve the performance of the differential at lower temperatures.

摘要翻译： 一种限滑差速器，具有至少一个锥形离合器元件，用于摩擦地接合可旋转差速器壳体的内表面。 锥形离合器元件具有围绕锥形离合器元件的外表面设置的多个离合器接合表面。 凹陷区域介于离合器接合表面之间。 总离合器接合表面面积减小到离合器元件的总接合面和凹入表面积的5％至15％之间，以提高差速器在较低温度下的性能。

公开(公告)号：US06309320B1

公开(公告)日：2001-10-30

申请号：US09484967

申请日：2000-01-18

申请人： James L. Forrest ,  Robert Leeper

发明人： James L. Forrest ,  Robert Leeper

IPC分类号： F16H4822

CPC分类号： F16H48/22 ,  F16H48/30 ,  F16H48/34 ,  F16H2048/204 ,  F16H2048/346

摘要： An electrically actuated limited slip axle assembly for transferring torque including a housing, a clutch, a casing and an electromagnet fixedly mounted to the housing. The casing is rotatably supported on bearings within the housing. The clutch is activated in response to energization of the electromagnet to transfer torque. In a first embodiment the electromagnet is coupled to a cup portion of the bearing, whereby the electromagnet is fixedly mounted to the housing via the bearing. In a second embodiment of the axle assembly includes a bearing spacer providing the fixed mount between the housing and the electromagnet.

摘要翻译： 一种用于传递扭矩的电动限制滑动轴组件，包括壳体，离合器，壳体和固定地安装到壳体的电磁体。 壳体可旋转地支撑在壳体内的轴承上。 离合器响应于电磁铁的通电而被激活以传递扭矩。 在第一实施例中，电磁体联接到轴承的杯部，由此电磁体经由轴承固定地安装到壳体。 在车轴组件的第二实施例中，包括在壳体和电磁体之间提供固定座的轴承间隔件。

公开(公告)号：US5989147A

公开(公告)日：1999-11-23

申请号：US30602

申请日：1998-02-25

申请人： James L. Forrest ,  Robert Leeper

发明人： James L. Forrest ,  Robert Leeper

IPC分类号： F16D48/12 ,  F16H48/20 ,  F16H48/22 ,  F16H48/30 ,  F16H48/34

CPC分类号： F16H48/22 ,  F16H48/30 ,  F16H48/34 ,  F16H2048/204 ,  F16H2048/346

摘要： A controllable differential having a clutch mechanism which transfers a predetermined amount of torque between a rotatable differential casing and a side gear when an initiating force is applied by an electronic actuator. A pair of sensors provide inputs to the electronic actuator which, in turn, actuates an electromagnet. A clutch mechanism is actuated by the electromagnet and applies an initiating force to the clutch mechanism to initially actuate the clutch mechanism when a predetermined relative rotational condition of the side gears is sensed. The application of the initiating force in combination with the interaction between engagement surfaces and between camming portions fully engages a clutch mechanism to transfer a predetermined controllable amount of torque.

摘要翻译： 一种可控制的差速器，具有离合器机构，当通过电子执行器施加起动力时，该离合器机构在可旋转的差速器壳体和侧齿轮之间传递预定量的扭矩。 一对传感器为电子致动器提供输入，电动致动器又驱动电磁体。 离合器机构由电磁铁致动并且当检测到侧齿轮的预定的相对旋转状态时，向离合器机构施加起动力以初始地起动离合器机构。 引导力与接合表面之间和凸轮部分之间的相互作用的应用与离合器机构完全接合以传递预定的可控量的扭矩。

公开(公告)号：US06582336B2

公开(公告)日：2003-06-24

申请号：US10090666

申请日：2002-03-05

申请人： James L. Forrest ,  Robert Leeper ,  James P. Scott

发明人： James L. Forrest ,  Robert Leeper ,  James P. Scott

IPC分类号： F16H4822

CPC分类号： F16H48/22 ,  F16H48/08 ,  F16H48/295 ,  F16H48/30 ,  F16H48/34 ,  F16H2048/204 ,  F16H2048/346

摘要： A differential assembly including a rotatable casing, first and second axially moveable side gears disposed within the casing, at least one pinion gear disposed within the casing and intermeshed with the side gears, a cone clutch operatively coupled to the first side gear, the cone clutch being frictionally coupled to the casing in response to being exposed to a magnetic field, and a disc clutch having at least one clutch disc operatively coupled to the second side gear in response to axial movement of the second side gear.

公开(公告)号：US6076644A

公开(公告)日：2000-06-20

申请号：US92830

申请日：1998-06-05

申请人： James L. Forrest ,  Robert Leeper

发明人： James L. Forrest ,  Robert Leeper

IPC分类号： F16D13/24 ,  F16H48/08 ,  F16H48/20 ,  F16H48/22

CPC分类号： F16H48/22 ,  F16D13/24 ,  F16H48/08

摘要： A limited slip differential having at least one cone clutch element for frictionally engaging an interior surface of the rotatable differential casing. The cone clutch element has a plurality of clutch engagement surfaces which are disposed about the outside surface of the cone clutch element. Recessed areas are interposed between the clutch engagement surfaces.

摘要翻译： 一种限滑差速器，具有至少一个锥形离合器元件，用于摩擦地接合可旋转差速器壳体的内表面。 锥形离合器元件具有围绕锥形离合器元件的外表面设置的多个离合器接合表面。 凹陷区域介于离合器接合表面之间。

公开(公告)号：US6019694A

公开(公告)日：2000-02-01

申请号：US257281

申请日：1999-02-24

申请人： James L. Forrest ,  Robert Leeper

发明人： James L. Forrest ,  Robert Leeper

IPC分类号： F16D48/12 ,  F16H48/20 ,  F16H48/22 ,  F16H48/30 ,  F16H48/34

CPC分类号： F16H48/22 ,  F16H48/30 ,  F16H48/34 ,  F16H2048/204 ,  F16H2048/346

摘要： A controllable differential having a rotatable casing, differential gearing disposed within the rotatable casing and linking the casing with an output element disposed therein, a clutch disposed within the rotatable casing and clutch adapted to transfer torque between the rotatable casing and the output element, and an electromagnet arranged to generate a generally toroidal magnetic flux path encircling the electromagnet and magnetically forcing the clutch into engagement with the rotatable casing, the casing including a nonmagnetic portion adjacent the electromagnet, said flux path surrounding the nonmagnetic casing portion.

摘要翻译： 一种可控制的差速器，具有可旋转的壳体，差速齿轮装置设置在可旋转壳体内并且将壳体与设置在其中的输出元件连接，设置在可旋转壳体内的离合器和适于在可旋转外壳和输出元件之间传递扭矩的离合器， 电磁体被布置成产生环绕电磁体的大致环形的磁通路径，并且磁力迫使离合器与可旋转壳体接合，壳体包括邻近电磁体的非磁性部分，所述磁通路径围绕非磁性壳体部分。

公开(公告)号：US20120031212A1

公开(公告)日：2012-02-09

申请号：US13103163

申请日：2011-05-09

申请人： James L. Forrest

发明人： James L. Forrest

IPC分类号： F16H57/00

CPC分类号： F16D11/14 ,  F16D2011/004

摘要： A drive unit disconnect mechanism is operable to transmit or disconnect power from a vehicle power source to a driven unit, and can be disengaged by multiple methods depending on how much force is required to separate the internal components of the mechanism. In a first, relatively quicker method, a handle is pulled axially away from the hub to withdraw and internal gear from splined engagement with a corresponding driven gear. In a second, relatively slower method, the handle is rotated to threadably withdraw the entire disconnect mechanism from the hub, which in turn withdraws the internal gear from splined engagement with the driven gear. The quicker method is desirable in most instances, but the slower method allows disconnection of the driven unit from the vehicle power source when gear pressure prevents or impedes the quicker method.

摘要翻译： 驱动单元断开机构可操作以从车辆动力源向从动单元发送或断开电力，并且可以根据需要多少力来分离机构的内部组件，通过多种方法来分离。 在第一个相对较快的方法中，手柄被轴向地从轮毂拉出以使其与相应的从动齿轮花键接合而退出和内齿轮。 在第二种相对较慢的方法中，手柄被旋转以将整个断开机构螺纹地从轮毂上拉出，轮毂又使内齿轮与从动齿轮花键接合而退出。 在大多数情况下，更快的方法是可取的，但是当齿轮压力防止或阻碍更快的方法时，较慢的方法允许从车辆动力源断开从动单元。

公开(公告)号：US06254505B1

公开(公告)日：2001-07-03

申请号：US09447410

申请日：1999-11-23

申请人： James L. Forrest

发明人： James L. Forrest

IPC分类号： F16H4808

CPC分类号： F16H48/30 ,  F16H48/08 ,  F16H48/22 ,  F16H48/295 ,  F16H48/34 ,  F16H48/40 ,  F16H2048/085 ,  F16H2048/204 ,  F16H2048/346 ,  F16H2048/382

摘要： A differential assembly including a casing which rotates about a first axis, the casing having an internal cavity; an elongate cylindrical cross pin which rotates with the casing about the first axis, the cross pin extending along a second axis through the cavity, the second axis substantially perpendicular to the first axis; at least one pinion gear disposed within the cavity and about the cross pin, the pinion gear rotatable about the second axis; and a pair of side gears disposed within the cavity and in meshed engagement with the pinion gear, the side gears rotatable about the first axis. A cross pin retention element is disposed about the cross pin. The cross pin and the retention element are fixed against substantial relative movement therebetween along the second axis, and the retention element is disposed adjacent the pinion gear. The movement of the retention element relative to the casing along the second axis is restricted, whereby the cross pin is retained in the casing.

摘要翻译： 一种差速组件，包括围绕第一轴线旋转的壳体，所述壳体具有内部空腔; 细长的圆柱形交叉销，其与所述壳体围绕所述第一轴线旋转，所述十字销沿着第二轴线延伸穿过所述空腔，所述第二轴线基本上垂直于所述第一轴线; 至少一个小齿轮，设置在所述腔体内并且围绕所述十字销，所述小齿轮可围绕所述第二轴线旋转; 以及一对侧齿轮，其设置在所述腔内且与所述小齿轮啮合，所述侧齿轮能够绕所述第一轴线旋转。 交叉销保持元件围绕十字销设置。 十字销和保持元件沿着第二轴固定成基本上相对移动，并且保持元件邻近小齿轮设置。 保持元件相对于壳体沿着第二轴线的移动受到限制，由此十字销保持在壳体中。

公开(公告)号：US5951426A

公开(公告)日：1999-09-14

申请号：US30603

申请日：1998-02-25

申请人： James L. Forrest

发明人： James L. Forrest

IPC分类号： F16H48/06 ,  F16H48/08

CPC分类号： F16H48/22 ,  F16H48/08 ,  F16H48/27

摘要： A hydraulically actuated limited slip differential which transfers a predetermined amount of clutch torque each time the clutch mechanism is triggered. The differential includes a hydraulic pump mechanism comprising a plurality of fluid supply passages disposed in a side gear and in fluid communication with a cavity defined by the side gear and the clutch mechanism. The hydraulic pump mechanism transfers fluid into the cavity in response to meshing rotation between the pinion gears and the side gears. Sufficiently high differentiation between the output shafts increases the pressure in the cavity to trigger the frictional clutch mechanism with the differential casing to provide braking action between the side gears and the differential casing. The clutch mechanism includes a cone clutch element having a frusto-conical engagement surface which frictionally engages an insert having a complementary frusto-conical engagement surface. The hydraulic trigger and cam separation produce a predetermined amount of axial movement by the cone clutch element and the insert to provide a predetermined amount of clutch torque.

摘要翻译： 一种液压致动的限滑差速器，每当离合器机构被触发时传递预定量的离合器扭矩。 差速器包括液压泵机构，其包括设置在侧齿轮中并与由侧齿轮和离合器机构限定的空腔流体连通的多个流体供应通道。 液压泵机构响应于小齿轮和侧齿轮之间的啮合旋转而将流体传递到空腔中。 在输出轴之间足够高的差异增加了空腔中的压力，以通过差速器壳体触发摩擦离合器机构，以在侧齿轮和差速器壳体之间提供制动作用。 离合器机构包括具有截头圆锥形接合表面的锥形离合器元件，该锥形离合器元件摩擦地接合具有互补的截头圆锥形接合表面的插入件。 液压扳机和凸轮分离通过锥形离合器元件和插入件产生预定量的轴向运动，以提供预定量的离合器扭矩。