公开(公告)号：US10527149B2

公开(公告)日：2020-01-07

申请号：US15373690

申请日：2016-12-09

Applicant: Gear Innovations LLC

Inventor： Bernard E. Berlinger, Jr. ,  John Robert Colbourne

IPC: F16H55/08 ,  F16H55/10 ,  F16H1/06 ,  F16H1/08 ,  F16H55/17

Abstract: A gear system includes gears that each have a tooth flank profile that includes a convex addendum and a concave dedendum, and when in mesh satisfy the Euler Savory equation for conjugacy with contact over the entire tooth flank such that lines of contact are unbroken. The portion between the addendum and dedendum is an involute or other geometric curve.

公开(公告)号：US20200007005A1

公开(公告)日：2020-01-02

申请号：US16484091

申请日：2018-02-02

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Ken Bryan IKEGUCHI ,  Atsushi WATANABE

IPC: H02K7/116 ,  F16H1/32 ,  F16H55/08

Abstract: Provided is a strain wave gear speed reducer which can improve both load torque performance and productivity, a method for manufacturing a strain wave gear speed reducer, and an actuator for link mechanism for internal combustion engine. A strain wave gear speed reducer includes; a flexible external gear having a plurality of external teeth each of which has a straight tooth profile; a rigid internal gear disposed on an outer periphery of the flexible external gear, the number of internal teeth of the rigid internal gear being greater than the number of the external teeth, the internal tooth having a straight tooth profile, and a tooth top of the internal tooth having a shape which matches or overlaps with a movement envelope of the external tooth as viewed from a direction of an axis of rotation of the flexible external gear; and a wave motion generator configured to cause the flexible external gear to be deflected in a radial direction so as to be partially engaged with the rigid internal gear, the wave motion generator being configured to rotate about an axis of rotation, thus causing an engagement portion to move in a circumferential direction.

公开(公告)号：US20190323590A1

公开(公告)日：2019-10-24

申请号：US16388469

申请日：2019-04-18

Applicant: TOYOTA BOSHOKU KABUSHIKI KAISHA

Inventor： Wataru SAKAGUCHI ,  Toshiharu KIRIYAMA ,  Shoma FUKAYA

IPC: F16H55/08 ,  F16H57/039 ,  F16H1/16 ,  F16H55/17

Abstract: A driving device in one aspect of the present disclosure includes an electric motor, a worm gear, a gear easing that stores the worm gear, a first fitting portion provided in the electric motor, a second fitting portion provided in the gear casing and fitting to the first fitting portion, and a restriction member that includes a pressure contact portion and a contact portion and restricts displacement of the worm gear along a rotation center axis thereof. The pressure contact portion is in pressure contact with one fitting portion out of the first fitting portion and the second fitting portion, and the contact portion is in contact with the other fitting portion.

公开(公告)号：US20190264791A1

公开(公告)日：2019-08-29

申请号：US15907281

申请日：2018-02-27

Applicant: The Boeing Company

Inventor： Robert J. Atmur ,  William Patrick Sargent

IPC: F16H49/00 ,  F16H55/17 ,  F16H55/08

Abstract: An optimized harmonic drive (“OHD”) is disclosed. The OHD includes a wave generator, a flex spline, and a circular rigid spline. The wave generator includes a wave generator contour that minimizes a velocity profile of the wave generator during a high load condition. The flex spline is attached to the wave generator and the circular rigid spline is mechanically engaged to the flex spline. The flex spline includes a plurality of flex spline teeth and the circular rigid spline includes a plurality of rigid spline teeth. The plurality of rigid spline teeth is greater than the plurality of flex spline teeth and the high load condition exists when the rigid spline teeth of the plurality of rigid spline teeth are fully engaged with flex spline teeth of the plurality of flex spline teeth.

公开(公告)号：US10378612B2

公开(公告)日：2019-08-13

申请号：US15216786

申请日：2016-07-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shaun X. Zhao ,  Bhapinder Puri

IPC: B23P15/14 ,  F16H1/14 ,  B23F9/08 ,  B23F9/10 ,  B23F19/10 ,  F16H1/18 ,  F16H55/17 ,  F16H55/08 ,  B24C1/10 ,  B23F19/02 ,  B23F19/06 ,  B23F19/12

Abstract: A bevel gear set and a method of manufacturing the same are provided. The bevel gear set may include a first bevel gear and a second bevel gear. The first and second bevel gears may be spiral bevel gears or hypoid spiral bevel gears. The first and second bevel gears may each have a gear tooth surface having a plurality of teeth formed thereon, such that the teeth of the first bevel gear and the teeth of the second bevel gear are configured to engage in a meshing engagement. The teeth are machined onto the respective gear tooth surface via a face milling process. Each tooth includes a tooth top, a plurality of meshing surfaces, and at least one chamfer. The chamfer may be formed at an abutment edge disposed between the tooth top and a respective meshing surface via a brushing process directly following the machining of the teeth.

公开(公告)号：US20190022778A1

公开(公告)日：2019-01-24

申请号：US16070978

申请日：2017-01-30

Applicant: Sikorsky Aircraft Corporation

Inventor： Edward H. BITTNER ,  Bruce D. HANSEN ,  Christopher John MUSSEL

IPC: B23F7/00 ,  F16H55/08 ,  B23H5/08 ,  B23H9/00 ,  F16H1/08

Abstract: A herringbone gear includes a cylindrical body having a circumferential face having a width. A first helical gear tooth on the circumferential face has a first configuration, a second helical gear tooth on the circumferential face has a second configuration, and a transition on the circumferential face extends between the first helical gear tooth and the second helical gear tooth. An involute form taken within a transverse plane of the circumferential face remains constant over the width.

公开(公告)号：US20180328477A1

公开(公告)日：2018-11-15

申请号：US15590499

申请日：2017-05-09

Applicant: AstroNova, Inc.

Inventor： Joseph G. Spanedda ,  Louis D. Verte, JR. ,  Jonathan J. Azar

IPC: F16H55/12 ,  F16H55/08 ,  F16H1/16

CPC classification number: F16H1/16 ,  F16H55/22

Abstract: A worm drive includes a worm wheel having two spaced-apart outer rims defining an annular channel therebetween for receiving at least a portion of a worm screw. Each of the rims include a set of side teeth in the annular channel extending that are spaced apart from and face the set of teeth of the other rim. The two sets of teeth capture the worm screw and mesh with the screw thread of the worm screw such that the worm screw is engaged by the teeth only on spaced-apart locations on opposite sides of the worm screw. There are no resultant forces in an axial direction of the worm wheel during operation of the worm drive. Also, the worm screw and the worm wheel are self-aligning in the axial direction of the worm wheel.

公开(公告)号：US10118693B2

公开(公告)日：2018-11-06

申请号：US14381703

申请日：2013-02-01

Applicant: ZF FRIEDRICHSHAFEN AG

Inventor： Sergej Lieder ,  Reinhold Ruhland

IPC: B64C27/12 ,  F16H55/08 ,  F16H1/12

Abstract: The present disclosure relates to a gear set, especially for a rotary-wing aircraft, with two intermeshing gear wheels, each mounted on a respective shaft. In particular, in a normal section, the gear wheels of the gear set have different pressure angles on a drive side from the pressure angles on a freewheel side at the beginning of an engagement.

公开(公告)号：US20180281177A1

公开(公告)日：2018-10-04

申请号：US15936893

申请日：2018-03-27

Applicant: Seiko Epson Corporation

Inventor： Hiroyuki KUSUMOTO

IPC: B25J9/10 ,  F16H49/00 ,  F16H57/04 ,  F16C19/06 ,  F16H55/08

Abstract: A robot includes a first member, a second member provided rotatably with respect to the first member, a gearing that transmits drive power from one side to the other side of the first member and the second member, the gearing includes an internal gear, an external gear having a flexible barrel portion in a tubular shape with an opening portion in an end part, and rotating about a rotation axis relative to the internal gear, and a wave generator, the wave generator includes a cam having a non-circular outer circumferential surface, and a bearing including an inner ring, an outer ring, and a plurality of balls, the first member includes a counter body provided to face the end part on the opening portion side of the barrel portion, and a first seal member is provided between the outer ring and the counter body.

公开(公告)号：US20180259055A1

公开(公告)日：2018-09-13

申请号：US15980106

申请日：2018-05-15

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Nick BRETL ,  Matthias STANGL

IPC: F16H55/08 ,  F16H55/17

CPC classification number: F16H55/0886 ,  F16H55/14 ,  F16H55/17

Abstract: A gear for transmitting power has a plurality of teeth, each having two tooth flanks for transmitting power to another gear. The gear can be rotated about an axis of rotation, and has a reference plane, which is arranged orthogonal to the axis of rotation. Tooth flanks of the same name are the tooth flanks for transmitting power in one direction of rotation, wherein the tooth flanks have a tooth flank length proceeding from a front side of the reference plane. Two tooth flanks of the same name are arranged directly adjacent to a crown tooth flank, said two tooth flanks of the same name each having a smaller tooth flank length than the crown tooth flank. The gear has at least one of the crown tooth flanks and is configured as a helically toothed gear.