American Axle & Manufacturing, Inc.

Other

Peter Fischer

James Preston Downs

Jeffrey J Ronning

John C Morgante

David Crecelius

Paul Joseph Valente

Zugang Huang

Joshua S Edwards

Andrew Feldkamp

Nelson Rodriguez

A motor drive system has a rotor assembly that is rotatable about an axis and includes a hollow shaft, a tube, and one or more fin sets. The tube is received in the shaft and defines a first passage. The fin sets are disposed about the tube and are engaged to the shaft. Each fin set defines a plurality of circumferentially spaced apart fins that are coupled to the shaft and the tube. The first passage is configured to discharge fluid communicated therethrough into a return chamber that is formed in the rotor assembly. A plurality of second passages are formed between the shaft and fins and are in fluid communication with the return chamber.

Electric drive module having motor with heat sink insert in rotor shaft

An electric motor can include a stator body defining fluid channels extending axially for fluid communication between axial ends of the stator body. Conductive windings can form first loops extending axially outward from the first end of the stator body and second loops extending axially outward from the second end of the stator body. A first cap can be coupled to the first end of the stator body and can include a first wall. The first wall can be between the first loops and the channels. Pins can extend from a side of the first wall that is opposite the first loops. The second cap can be coupled to the second end of the stator body and include a second wall. The second wall can be between the second loops and the channels. Pins can extend from a side of the second wall that is opposite the second loops.

Electric motor and stator cooling apparatus

A motor drive system with a rotor assembly having an insert, which is received into a blind hollow rotor space in a rotor shaft. The insert is unitarily and integrally formed and defines a central hole, which is disposed along a rotational axis of the rotor assembly, and a plurality of slots that extend through an outer circumferential surface of the insert. The insert is disposed in the rotor shaft such that the outer circumferential surface of the insert is engaged to the inside circumferential surface of the rotor shaft. The central hole forms a first fluid passage through the insert, while the slots form a plurality of second fluid passages through the insert.

A motor drive assembly having an electric motor with a rotor that includes a rotor shaft and a heat exchanger received in the rotor shaft. The heat exchanger has an insert body with an outer insert surface that is engaged to an inside surface of the rotor shaft. The insert body includes a plurality of segments. Each of the segments defines a first through-hole, and a plurality of second through-holes. Each of the segments is fixedly coupled to one another. A first flow passage extends through the first through-holes in the plurality of segments. Each of the second through-holes defines a portion of a corresponding second flow passage. The second flow passages are disposed concentrically about the first flow passage.

A skeletal measurement device is disclosed in which concave arcuate calipers extend from a central housing containing a gear actuated dial scale. Upon expansion of the ends of the concave calipers away from one another in reaching and measuring skeletal points on a body therebetween, the gear actuated scale measures the distance between the caliper ends. Preferably, the arcuate calipers are extensible to at least first and second lengths. Accordingly, the connected gear actuated dial scale is provided with corresponding scales indicating the correspondingly changed distance of the extended arms. When the instrument is extended with its calipers measuring skeletal reference points, an attached inclinometer provides gravitational angular reference to the vertical. Dependent upon how the central housing must be disposed to enable the calipers to reach about the body being measured, this inclinometer is hinged along a hinge axis parallel to a line between the ends of the calipers to allow rapid measurement of distance and angle between skeletal points. Preferably, the measuring instrument is suspended by an adjustable cord from the neck of the measuring therapist to free his or her hands for palpation, data recording, safety of patient and movement of the measuring arms during rapid repeatable measurement. Provision is made for the attachment of palpation ends to the ends of the concave arcuate arms so that the skeletal points on a body can be palpated at the same time as the instrument is suspended around the therapist's neck and the measurements are read.

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Fishers, IN, United States of America

Peter Fischer