Patent · US Active

Retractable and deployable flight rotor system

US10336443B2 · kind B2 · utility

9Cited by

7References

20Claims

0Family size

Assignee

Bell Helicopter Textron Inc. · US

Inventors

Matthew Edward Louis · Fort Worth, US
Michael John Ryan · Colleyville, US
Daniel Bryan Robertson · Southlake, US
Frank B. Stamps · Colleyville, US

Key dates

Filing date	Jun 19, 2017
Grant date	Jul 2, 2019
Priority date	—
Expiry date	Jan 26, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64U30/20
WIPO fieldTransport
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.