Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1986-12-22
1988-02-16
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 43, 310 91, 310156, H02K 3700
Patent
active
047257490
ABSTRACT:
A wristwatch movement has a Lavet stepping motor directly driving a center wheel attached to the minute hand. The frame plate of the movement is of non-magnetic plastic material with recesses locating the pole shoes of two stator members of the stepping motor. An integral plastic cylindrical wall extends from the recess. The stepping motor rotor is rotatably supported within the wall by a journal at one end in the frame plate and at the other end by a cap. The stator pole faces are accurately spaced from the rotor by the wall and held in place by deforming plastic material against the stator pieces toward the wall.
REFERENCES:
patent: 2909685 (1959-10-01), Szabo
patent: 3902312 (1975-09-01), Yamazaki
patent: 3949251 (1976-04-01), Takatsuki
patent: 3978651 (1976-09-01), Yoshino
patent: 3979642 (1976-07-01), Yoshino
patent: 4270066 (1981-05-01), Terade
patent: 4317187 (1982-02-01), Yamazaki
patent: 4369385 (1983-01-01), Malkin
patent: 4376996 (1983-03-01), Wutrich
patent: 4392748 (1983-07-01), Yoshino
patent: 4426158 (1984-01-01), Muller
patent: 4523857 (1985-06-01), Ushikoshi
patent: 4647218 (1987-03-01), Wuthrich
patent: 4679944 (1987-07-01), Sedlak
Crutcher William C.
Skudy R.
Timex Corporation
LandOfFree
Stepping motor and frame plate assembly for a wristwatch movemen does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stepping motor and frame plate assembly for a wristwatch movemen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stepping motor and frame plate assembly for a wristwatch movemen will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2222495