The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2017
Filed:
Jan. 29, 2016
Sikorsky Aircraft Corporation, Stratford, CT (US);
Timothy F. Lauder, Oxford, CT (US);
Jonathan Hartman, Lorton, VA (US);
Sikorsky Aircraft Corporation, Stratford, CT (US);
Abstract
A rotor drive system includes a mast defining a rotation axis, an electric motor with a stator portion fixed to the stationary mast, a rotor portion rotatably relative to the stator portion, and a clutch disposed along the rotation axis and connected to the rotor portion of the electric motor. A rotor assembly is rotatable about the rotation axis and operably connected to clutch such that, when rotational speed of the rotor assembly exceeds rotational speed of the rotor portion of the electric motor, the clutch disengages the rotor assembly from the electric motor rotor portion.