公开(公告)号：US11732787B2

公开(公告)日：2023-08-22

申请号：US16500024

申请日：2018-04-03

Applicant: SRI INTERNATIONAL

Inventor： Alexander Kernbaum ,  Murphy Kitchell ,  Thomas Egan

IPC: F16H9/20 ,  F16H55/56

CPC classification number: F16H9/20 ,  F16H55/56

Abstract: A variety of shifter mechanisms are provided for controlling the axial distance between half-pulleys of a split pulley variable transmission, thus controlling the transmission ratio of the variable transmission. Some of these embodiments include a differential such that a variable transmission can be driven and shifted differentially by two inputs. A torque or rotation difference between the inputs results in a change in the transmission ratio and in-common torque or rotation is transmitted through the transmission to an output. The same motors used to drive the output of the transmission are thus also able to effect shifts in the transmission ratio. Accordingly, motor mass that is not being used to effect high-speed shifts may be used to drive the transmission output, and vice versa. The provided shifter embodiments are well-suited to application to nested-pulley variable transmissions, including nested-pulley infinitely variable transmissions.

公开(公告)号：US10899016B2

公开(公告)日：2021-01-26

申请号：US15768311

申请日：2016-10-21

Applicant: SRI INTERNATIONAL ,  YAMAHA HATSUDOKI KABUSHIKI KAISHA

Inventor： Thomas Low ,  Thomas De Candia ,  Seungkook Yun ,  Thomas Egan ,  Bryan Chavez ,  Alexander Kernbaum ,  Riley Shear ,  Leonard Gerard ,  Stephen Morfey ,  Richard Mahoney ,  Regis Vincent ,  Paul Birkmeyer ,  Hiroyuki Morita ,  Hirokatsu Muramatsu ,  Keiji Nishimura ,  Hiroshi Saijou ,  Akira Satou ,  Toshifumi Uchiyama ,  Hitoshi Watanabe ,  Shirou Watanabe

IPC: B25J11/00 ,  B25J9/10 ,  B25J13/08 ,  B25J19/02 ,  B25J9/00 ,  B25J9/16 ,  G05D1/00 ,  G05D1/02 ,  G06K9/00

Abstract: An example system includes a vehicle, a robot, and a controller. The vehicle may include an accelerator operator and a steering operator. The robot may include as accelerator actuator configured to operate the accelerator operator, and a steering actuator configured to operate-the steering operator. The controller is configured to: in response to an accelerator command, send a first signal to the accelerator actuator to operate the accelerator operator of the vehicle, and in response to a steering command, send a second, signal to the steering actuator to steer the vehicle.

公开(公告)号：US12146573B2

公开(公告)日：2024-11-19

申请号：US18347294

申请日：2023-07-05

Applicant: SRI INTERNATIONAL

Inventor： Alexander Kernbaum ,  Murphy Kitchell ,  Thomas Egan

IPC: F16H9/20 ,  F16H55/56

Abstract: A variety of shifter mechanisms are provided for controlling the axial distance between half-pulleys of a split pulley variable transmission, thus controlling the transmission ratio of the variable transmission. Some of these embodiments include a differential such that a variable transmission can be driven and shifted differentially by two inputs. A torque or rotation difference between the inputs results in a change in the transmission ratio and in-common torque or rotation is transmitted through the transmission to an output. The same motors used to drive the output of the transmission are thus also able to effect shifts in the transmission ratio. Accordingly, motor mass that is not being used to effect high-speed shifts may be used to drive the transmission output, and vice versa. The provided shifter embodiments are well-suited to application to nested-pulley variable transmissions, including nested-pulley infinitely variable transmissions.