Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1993-01-14
1993-12-28
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 90, 310262, 310266, 384111, F16C 3206, H02K 122, H02K 708
Patent
active
052742865
ABSTRACT:
A spindle device with a built-in motor comprises a casing, a working spindle having a large radius portion formed with a bore and a small radius portion extending from the large radius portion, the large radius portion being housed in the casing, and the small radius portion protruding from the casing and having a working tool mounted thereon, a cylindrical motor rotor attached to an inner surface of the large radius portion of the working spindle, a fixed shaft provided in the casing and loosely inserted into the motor rotor, and a motor stator mounted on an outer surface of the fixed shaft opposed to the motor rotor. The casing is formed with an air passageway having a plurality of injection nozzles which are open at an inner surface of the casing opposed to an outer surface of the large radius portion of the working spindle. The working spindle that is rotating is supported by supplying air consecutively from the injection nozzles to a narrow space formed between the inner surface of the casing and the outer surface of the large radius portion of the working spindle.
REFERENCES:
patent: 2830541 (1958-04-01), Higgins et al.
patent: 4306166 (1981-12-01), Quandt
patent: 4362020 (1982-12-01), Meacher
patent: 4869626 (1989-09-01), Kosmowski
patent: 4919547 (1990-04-01), Schwartzman
patent: 5127744 (1992-07-01), White
patent: 5168186 (1992-12-01), Yashiro
Haszko D. R.
Stephan Steven L.
Teijin Seiki Co. Ltd.
LandOfFree
Spindle device with a built-in motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spindle device with a built-in motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spindle device with a built-in motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1545414