Patent US3751697A successfully refreshed from Google Patents.
US3751697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motor construction with directional control
Assignee: AMF Inc
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Filing: 1972-06-01
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Granted: 1973-08-07
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Expires: 1992-06-01
Abstract
Abstract Means for assembling and aligning the stator assembly with two pole pieces of a synchronous permanent magnet motor without the use of jigs. The alignment means also provides a pivot for a cam follower for the one way directional control of the motor.
Inventors
- 👤 E Morley
- 👤 R Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:45
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K7/00; H02K7/10; H02K7/118; H02K7/1185
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A stator capable of being assembled without jigs for a synchronous motor with a permanent magnet rotor, comprising spool means having a tubular body portion and a pair of spaced flange portions each extending radially outwardly from a different end of said body portion, a wound coil on said spool means, a pair of pole pieces each adjacent a different one of said flange portions and having a series of spaced salient poles extending axially relative to said spool means and being disposed in the spaces between the salient poles of the other pole piece thereby forming a ring of salient stator poles disposed concentrically with respect to the permanent magnet motor, and a pivot extending axially from one of said flange portions and through the adjacent pole piece for mounting a cam follower arm of a directional control of the motor.
Claim 2
Dependent Claim
142 words
A stator capable of being assembled without jigs for a synchronous motor with a permanent magnet rotor, comprising spool means having a tubular body portion and a pair of spaced flange portions each extending radially outwardly from a different end of said body portion, a wound coil on said spool means, a pair of pole pieces each adjacent a different one of said flange portions and having a series of spaced salient poles extending axially relative to said spool means and being disposed in the spaces between the salient poles of the other pole piece thereby forming a ring of salient stator poles disposed concentrically with respect to the permanent magnet motor, and a pivot extending axially from one of said flange portions and through the adjacent pole piece for mounting a cam follower arm of a directional control of the motor.
Claim 3
Dependent Claim
40 words
The stator in accordance with claim 1, and further including abutment means extending axially from the other one of said flange portions and, said pole piece adjacent said other flange portion being provided with means for engaging said abutment means.
Claim 4
Dependent Claim
44 words
The stator in accordance with claim 2, and said abutment means comprising at least one protrusion extending from said other flange portion, and said pole piece adjacent the other flange portion having a pair of spaced walls engaging opposite sides of said abutment means.
Claim 5
Dependent Claim
48 words
The stator in accordance with claim 1, and abutment means comprising a plurality of arcuately spaced slotted tab portions extending radially inwardly from said body portion, and a different one of said salient poles of the second adjacent pole piece extending through each of said slotted tab portions.
Claim 6
Dependent Claim
50 words
The stator in accordance with claim 1, and abutment means comprising an annular flange portion extending radially inwardly from said body portion and having a plurality of arcuately spaced slots, and each of said salient poles of the second adjacent pole piece extending through a different one of the slots.
Claim 7
Dependent Claim
70 words
The stator in accordance with claim 1, and said spool means including a bearing portion extending axially within said body portion, and a web portion joining said bearing and body portions to each other at one end of said spool means, said web portion having a plurality of selectively spaced slots, and each of said salient poles of the adjacent pole piece extending through a different one of the slots.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |