公开(公告)号：US20180163796A1

公开(公告)日：2018-06-14

申请号：US15891834

申请日：2018-02-08

Applicant: SRI International

Inventor： Joseph Stephen Eckerle ,  Brian K. McCoy

IPC: F16D48/06

Abstract: Systems and methods are shown for electrically controllably transmitting power from a motor involving electrically controllably coupling the first input hub to a shuttle so that power is transmitted from the first input hub to the shuttle, providing for one-way rotation between the shuttle and a stationary chassis, and coupling the shuttle to an output hub with a spring such that energy is stored and released from the spring as the output hub rotates. Examples are shown that include controlling engaged and disengaged time intervals of the first input hub and shuttle to maintain a torque level at the output hub, such as by utilizing pulse width modulation or pulse frequency modulation. Examples are also shown involving electroadhesively coupling the first input hub to the shuttle.

公开(公告)号：US10774886B2

公开(公告)日：2020-09-15

申请号：US15891834

申请日：2018-02-08

Applicant: SRI International

Inventor： Joseph Stephen Eckerle ,  Brian K. McCoy

IPC: F16D48/06

Abstract: Systems and methods are shown for electrically controllably transmitting power from a motor involving electrically controllably coupling the first input hub to a shuttle so that power is transmitted from the first input hub to the shuttle, providing for one-way rotation between the shuttle and a stationary chassis, and coupling the shuttle to an output hub with a spring such that energy is stored and released from the spring as the output hub rotates. Examples are shown that include controlling engaged and disengaged time intervals of the first input hub and shuttle to maintain a torque level at the output hub, such as by utilizing pulse width modulation or pulse frequency modulation. Examples are also shown involving electroadhesively coupling the first input hub to the shuttle.

公开(公告)号：US10711848B2

公开(公告)日：2020-07-14

申请号：US16195189

申请日：2018-11-19

Applicant: SRI International

Inventor： Karen Shakespear Koenig ,  Pablo Eduardo Garcia Kilroy ,  Brian Keith McCoy ,  Allegra Anna Lenta Shum ,  Joseph Stephen Eckerle

IPC: F16D27/02 ,  F16D13/64

Abstract: Methods and apparatus related to electrolaminate clutches and transmissions are disclosed. A device can include: an input shaft that can be coupled to an electrolaminate sheet; an output shaft that can be coupled rigidly to a spring positioned over the input shaft, where the spring includes a tab that fits a groove of a spring capture ring that can be positioned over the input shaft; and a drum connected to an electrical ground between the electrolaminate sheet and the spring capture ring, where the drum can be coupled rigidly to the spring capture ring. Then, when a voltage is applied to the electrolaminate sheet, the electrolaminate sheet can clamp to the drum and impart rotation of the input shaft to the drum. The imparted rotation can cause the spring capture ring and the spring to rotate and clamp down on the input shaft, imparting rotation to the output shaft.

公开(公告)号：US10138953B1

公开(公告)日：2018-11-27

申请号：US15219263

申请日：2016-07-25

Applicant: SRI International

Inventor： Karen Shakespear Koenig ,  Pablo Eduardo Garcia Kilroy ,  Brian Keith McCoy ,  Allegra Anna Lenta Shum ,  Joseph Stephen Eckerle

IPC: F16D27/02 ,  F16D13/64 ,  F16H3/66

Abstract: Methods and apparatus related to electrolaminate clutches and transmissions are disclosed. A device can include: an input shaft that can be coupled to an electrolaminate sheet; an output shaft that can be coupled rigidly to a spring positioned over the input shaft, where the spring includes a tab that fits a groove of a spring capture ring that can be positioned over the input shaft; and a drum connected to an electrical ground between the electrolaminate sheet and the spring capture ring, where the drum can be coupled rigidly to the spring capture ring. Then, when a voltage is applied to the electrolaminate sheet, the electrolaminate sheet can clamp to the drum and impart rotation of the input shaft to the drum. The imparted rotation can cause the spring capture ring and the spring to rotate and clamp down on the input shaft, imparting rotation to the output shaft.

公开(公告)号：US20190085913A1

公开(公告)日：2019-03-21

申请号：US16195189

申请日：2018-11-19

Applicant: SRI International

Inventor： Karen Shakespear Koenig ,  Pablo Eduardo Garcia Kilroy ,  Brian Keith McCoy ,  Allegra Anna Lenta Shum ,  Joseph Stephen Eckerle

IPC: F16D27/02 ,  F16H3/66 ,  F16D13/64

Abstract: Methods and apparatus related to electrolaminate clutches and transmissions are disclosed. A device can include: an input shaft that can be coupled to an electrolaminate sheet; an output shaft that can be coupled rigidly to a spring positioned over the input shaft, where the spring includes a tab that fits a groove of a spring capture ring that can be positioned over the input shaft; and a drum connected to an electrical ground between the electrolaminate sheet and the spring capture ring, where the drum can be coupled rigidly to the spring capture ring. Then, when a voltage is applied to the electrolaminate sheet, the electrolaminate sheet can clamp to the drum and impart rotation of the input shaft to the drum. The imparted rotation can cause the spring capture ring and the spring to rotate and clamp down on the input shaft, imparting rotation to the output shaft.

公开(公告)号：US10012276B2

公开(公告)日：2018-07-03

申请号：US14746762

申请日：2015-06-22

Applicant: SRI International

Inventor： Joseph Stephen Eckerle ,  Brian K. McCoy

IPC: F16H48/06 ,  F16D48/06

CPC classification number: F16D48/064 ,  F16D2500/1022 ,  F16D2500/10475 ,  F16D2500/10493 ,  F16D2500/3166 ,  F16D2500/7044 ,  F16D2500/7109

Abstract: Systems and methods are shown for electrically controllably transmitting power from a motor involving electrically controllably coupling the first input hub to a shuttle so that power is transmitted from the first input hub to the shuttle, providing for one-way rotation between the shuttle and a stationary chassis, and coupling the shuttle to an output hub with a spring such that energy is stored and released from the spring as the output hub rotates. Examples are shown that include controlling engaged and disengaged time intervals of the first input hub and shuttle to maintain a torque level at the output hub, such as by utilizing pulse width modulation or pulse frequency modulation. Examples are also shown involving electroadhesively coupling the first input hub to the shuttle.