Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1996-04-19
1997-02-11
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 68A, 310 68B, 310 77, H02K 1100
Patent
active
056024363
ABSTRACT:
A dynamoelectric machine of the present invention includes a stator, a rotor journaled with respect to the stator, and a rotor shaft having a longitudinal axis extending axially from said rotor. An auxiliary winding and a starting switch operable to de-energize said auxiliary winding upon the motor obtaining a predetermined speed is provided. A centrifugal actuator is mounted on the rotor shaft to actuate the starter switch to de-energize the starter windings when the rotor obtains a predetermined speed. The rotor shaft has a single wide groove formed thereon and the actuator has a sleeve which is journaled on the rotor shaft. The sleeve has an inwardly directed projection sized and shaped to fit in the shaft groove. The sleeve projection and shaft groove interact such that the actuator sleeve cannot be moved relative to the shaft and the switch without a great deal of force. Shims, in the form of brake liners, are provided to place an actuator face of the actuator within a predetermined distance of the switch. This construction provides a proper running clearance between the face and the switch which is very difficult to change.
REFERENCES:
patent: 2538410 (1951-01-01), Bretch
patent: 3271602 (1966-09-01), Waters
patent: 3582741 (1971-06-01), Arnold et al.
patent: 3609421 (1971-09-01), Hildebrandt et al.
patent: 4205245 (1980-05-01), Hildebrandt et al.
patent: 4208559 (1980-06-01), Gray
patent: 4240001 (1980-12-01), Hildebrandt et al.
patent: 4242607 (1980-12-01), Hildebrandt et al.
patent: 4289988 (1981-09-01), Schaeter
patent: 4296366 (1981-10-01), Hildebrandt et al.
patent: 4336472 (1982-06-01), Czech
patent: 4386290 (1983-05-01), Monette
patent: 4661732 (1987-04-01), Gehrt
patent: 5153471 (1992-10-01), Ottersbach
patent: 5293090 (1994-03-01), Heilman et al.
Heilman Raymond D.
Sherman Jeffrey S.
Dougherty Thomas M.
Emerson Electric Co.
Enad Elvin G.
LandOfFree
Motor starting switch with adjustable running clearance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motor starting switch with adjustable running clearance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor starting switch with adjustable running clearance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-344673