Title: Double-walled rotor for an oil-cooled electrical machine

Abstract: An interchangeable tube is disposed and retained within a hollow rotor shaft of an electrical machine to form an axially extending cavity between the tube and the hollow rotor shaft. Oil flows into the tube from an oil supply, through holes in the tube, and into the cavity, and is sprayed from holes in the hollow shaft for cooling and lubricating the electrical machine. The configurations of the hollow rotor shaft and the interchangeable tube facilitate removal of the tube from the hollow rotor shaft without complete disassembly of the electrical machine. Thus, tubes having different hole diameters and hole configurations can be interchanged to accommodate different oil flow requirements and different oil pressures established by constant speed drives or auxiliary power units coupled to the electrical machine.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Linscott, Jr., Phillip S. (Rockford, IL, US)

Application Number: 869756
Filing Date: 1978-01-16
Publication_date: 1980-05-13
Assignee: Sundstrand Corporation (Rockford, IL)
Primary Class(es): 310/61 310/68D
Other Classes:
US Patent Ref:

2894155	Jul, 1959	Labastie	310/54.
3145314	Aug, 1964	Becker	310/68.
3480810	Nov, 1969	Potter	310/54.
3648085	Mar, 1972	Fujii	310/54.
3733503	May, 1973	Potter	310/68.
3991588	Nov, 1976	Laskaris	310/54.
4018059	Apr, 1977	Hatch	310/54.

Other Refs:
Primary Examiner: Skudy, R.
Assistant Examiner:
Attorney: Wegner, Stellman, McCord, Wiles & Wood