Patent ID: 11927223
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A Woodruff key coupling system for torque transmission, the system comprising:
a Woodruff key;
a rotatable shaft having a rotation axis, the shaft including a keyseat having a keyseat opening defined in an outer surface of the shaft, a first part of the Woodruff key being received in the keyseat via the keyseat opening, the keyseat including:
a pocket engaged with the first part of the Woodruff key, the pocket having a maximum pocket depth relative to the keyseat opening;
a first keyseat extension extending in a first axial direction from the Woodruff key relative to the rotation axis of the shaft, a maximum depth of the first keyseat extension relative to the keyseat opening being less than the maximum pocket depth; and
a second keyseat extension extending in a second axial direction opposite the first axial direction from the Woodruff key relative to the rotation axis of the shaft, a maximum depth of the second keyseat extension relative to the keyseat opening being less than the maximum pocket depth; and

a component in torque-transmitting engagement with the shaft, the component including a keyway, a second part of the Woodruff key being received in the keyway,
wherein the maximum depth of the first keyseat extension is between 0.5 times the maximum pocket depth and 0.8 times the maximum pocket depth.