公开(公告)号：US20210301895A1

公开(公告)日：2021-09-30

申请号：US17202013

申请日：2021-03-15

Applicant: SRI INTERNATIONAL

Inventor： Joseph Eckerle ,  Alexander Kernbaum ,  Marisa de Souza

IPC: F16D67/06 ,  F16D13/10 ,  B25J19/00 ,  H02N13/00

Abstract: A variety of brake and/or clutch mechanisms, and improvements thereof, are provided having improved braking power, reduced size and weight, and other benefits. The braking mechanisms include a wrap spring clutch that is operable to mechanically couple a rotating member to a brake rotor that is in consistent contact with a brake pad. Actuation of the wrap spring clutch allows the wrap spring to engage with the rotating member, coupling the rotating member to the brake rotor thus braking the rotating member. The combination of the wrap spring clutch with the brake rotor and pad provides an overall braking mechanism that exhibits the decreased power cost, weight, size, and engagement time of the wrap spring clutch while having a braking power that can be moderated by specifying the area, engagement force, coefficient of friction, or other properties of the brake rotor and pad.

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：US20180320766A1

公开(公告)日：2018-11-08

申请号：US16032657

申请日：2018-07-11

Applicant: SRI International

Inventor： Alexander Kernbaum ,  Murphy Kitchell

IPC: F16H9/16 ,  F16H55/56 ,  F16H9/24 ,  F16H61/662 ,  F16D1/112

Abstract: A variable transmission may include a segmented pulley and a nested pulley located at least partially within the segmented pulley. The spacing between the components of the first segmented pulley may be varied to alter the transmission ratio of the variable transmission by altering the effective diameter of the segmented pulley. The nested pulley may also be a segmented pulley. In some embodiments, one of the pulleys may be rotationally fixed, and the variable transmission may comprise a compact infinitely variable transmission. The eccentricity of the compact infinitely variable transmission may be significantly less than the eccentricity of other infinitely variable transmission designs. In other embodiments, a nested pulley structure may be used to provide a compact continuously variable transmission.