Patent · US Active

Lift and hold differential lift PDU utilizing a permanent magnet rotor

US9878789B2 · kind B2 · utility

0Cited by

7References

17Claims

0Family size

Assignee

GOODRICH CORPORATION · US

Inventors

Aaron J. Roberts · Jamestown, US
Scott Harms · Ypsilanti, US
Wesley K. Stegmiller · Jamestown, US
Dustin Paul Scheer · Jamestown, US

Key dates

Filing date	Nov 10, 2015
Grant date	Jan 30, 2018
Priority date	—
Expiry date	Jul 20, 2036

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64D2009/006
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power drive unit (PDU) for moving cargo relative to a cargo bay of an aircraft includes a cam shaft. The PDU also includes a lift cam coupled to the cam shaft and configured to cause the PDU to be in at least one of a raised position or a lowered position based on rotation of the cam shaft. The PDU also includes a permanent magnet motor configured to generate a cogging torque sufficient to resist rotation of the cam shaft such that the PDU remains in the raised position in response to power being removed from the permanent magnet motor.

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