Invention Grant
- Patent Title: Retractable and deployable flight rotor system
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Application No.: US15627373Application Date: 2017-06-19
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Publication No.: US10336443B2Publication Date: 2019-07-02
- Inventor: Matthew E. Louis , Michael John Ryan , Daniel B. Robertson , Frank B. Stamps
- Applicant: Bell Helicopter Textron Inc.
- Applicant Address: US TX Fort Worth
- Assignee: BELL HELICOPTER TEXTRON INC.
- Current Assignee: BELL HELICOPTER TEXTRON INC.
- Current Assignee Address: US TX Fort Worth
- Agency: Patent Capital Group
- Main IPC: B64C11/28
- IPC: B64C11/28 ; B64C27/30 ; B64C27/48 ; B64C27/26 ; B64C27/28 ; B64C27/37

Abstract:
In one embodiment, an apparatus comprises a shaft, a rotor, and a cam surface. The shaft comprises a spiral spline along a length of the shaft. The rotor comprises a blade extending from the rotor and a tubular hole extending into the rotor. The tubular hole comprises a spiral groove configured to mate with the spiral spline on the shaft. Relative rotation between the spiral spline and the spiral groove causes the rotor to linearly move along the shaft. The cam surface comprising a recession. The blade nesting in the recession to constrains rotation of the rotor about the shaft and allows linear movement of the rotor along the shaft.
Public/Granted literature
- US20180362154A1 RETRACTABLE AND DEPLOYABLE FLIGHT ROTOR SYSTEM Public/Granted day:2018-12-20
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