公开(公告)号：US10793284B2

公开(公告)日：2020-10-06

申请号：US16567086

申请日：2019-09-11

Applicant: Bell Textron Inc.

Inventor： David Andrew Prater ,  Eric Stephen Olson

IPC: B64D35/00 ,  F16D25/12 ,  F16D48/02 ,  F16D41/00

Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The multimode clutch assembly includes a freewheeling unit having input and output races. The freewheeling unit has a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. A hydraulic actuator shifts the bypass assembly between the engaged position and a disengaged position. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the multimode clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the multimode clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US20210070430A1

公开(公告)日：2021-03-11

申请号：US17063712

申请日：2020-10-05

Applicant: Bell Textron Inc.

Inventor： Douglas Andrew Goodwin ,  David Andrew Prater ,  Eric Stephen Olson ,  David Bryan Roberts ,  Chia-Wei Su ,  Michael David Trantham ,  Charles Eric Covington

IPC: B64C27/12 ,  B64D35/08 ,  F16D41/04

Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly shifts the bypass assembly between engaged and disengaged positions. An engagement status sensor is configured to determine the engagement status of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US20220025941A1

公开(公告)日：2022-01-27

申请号：US17494356

申请日：2021-10-05

Applicant: Bell Textron Inc.

Inventor： Eric Stephen Olson ,  David Andrew Prater

IPC: F16D41/07 ,  F16D11/14 ,  F16D25/061 ,  F16D25/08 ,  F16D48/02 ,  F16D41/08 ,  F16D41/04 ,  B64C27/14 ,  B64D35/04 ,  B64D35/08

Abstract: A failsafe multimode clutch assembly positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly uses pressurized lubricating oil to shift the bypass assembly between the engaged position and a disengaged position. A lock assembly enables and disables actuation of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit enables a unidirectional torque transfer mode of the clutch assembly. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US20210061452A1

公开(公告)日：2021-03-04

申请号：US17037476

申请日：2020-09-29

Applicant: Bell Textron Inc.

Inventor： Eric Stephen Olson ,  David Andrew Prater

IPC: B64C27/12 ,  B64D27/10 ,  B64D27/24 ,  B64D35/02 ,  B64C27/06 ,  F16D41/08 ,  F16D48/02 ,  F16D28/00 ,  F16D25/062

Abstract: A failsafe multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having input and output races. The freewheeling unit has a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly must be energized to shift the bypass assembly from the engaged position to a disengaged position. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US20200247553A1

公开(公告)日：2020-08-06

申请号：US16567086

申请日：2019-09-11

Applicant: Bell Textron Inc.

Inventor： David Andrew Prater ,  Eric Stephen Olson

IPC: B64D35/00 ,  F16D41/00 ,  F16D48/02

Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The multimode clutch assembly includes a freewheeling unit having input and output races. The freewheeling unit has a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. A hydraulic actuator shifts the bypass assembly between the engaged position and a disengaged position. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the multimode clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the multimode clutch assembly is configured for bidirectional torque transfer.