Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-12-11
2010-06-29
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S093000
Reexamination Certificate
active
07745966
ABSTRACT:
A plurality of fan blades are secured to a rotor assembly of a single directional motor. When the motor is powered on, a force generated by the fan blades pushes the rotor assembly in a direction of a low friction thrust interface. When the motor is backdriven in a direction opposite the powered direction, the force generated by the fan blades pushes the rotor assembly in a direction of a higher-friction thrust interface, causing a tapered surface of the pinion and a tapered surface of a bearing retainer to be pressed against each other to produce a frictional braking force. The backdriven speed of the motor and drive device is therefore reduced, improving the reliability of the motor assembly. The invention can be applied to motor actuators used to control air dampers and other valves in gas or fluid delivery systems. The invention can also be used to reduce water hammer in water delivery systems.
REFERENCES:
patent: 3112081 (1963-11-01), Filz
patent: 3562565 (1971-02-01), Higashino et al.
patent: 3734254 (1973-05-01), Yanikoshi
patent: 5406180 (1995-04-01), Feller, Jr.
Gonzalez Quinones Jose A
Hansen Corporation
Leung Quyen
Townsend and Townsend / and Crew LLP
LandOfFree
Method and device for an actuator motor including an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for an actuator motor including an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for an actuator motor including an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4212986