Patent US2957058A successfully refreshed from Google Patents.
Patent US3711732A successfully refreshed from Google Patents.
US3711732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniature synchronous motor
Assignee: SAIN AG
•
Filing: 1971-02-02
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Granted: 1973-01-16
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Expires: 1991-02-02
Abstract
Abstract A miniature synchronous motor is made by forming a toothed stator in two parts. One part is moulded into a coil former by injection moulding, the moulding carrying a rotor bearing seating. The other part is located on and fastened to the first part unit by an insulating shell which also carries a rotor bearing seating. The rotor is multipolar and permanently magnetized.
Inventors
- 👤 H Gerber
- 👤 P Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:25
CPC Classifications
H; H02; H02K; H02K21/00; H02K21/12; H02K21/14; H02K21/145; H02K3/00; H02K3/46; H02K3/52; H02K3/521; H02K3/525; H02K2201/00; H02K2201/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
59 words
A miniature synchronous motor comprising two sheet metal stator parts with pole teeth, an energizing coil outside said pole teeth, an insulating moulded former carrying said coil, and a rotor, one stator part being imbedded in said coil former so as to be rigidly connected therewith and a bearing seating for a rotor bearing carried by said coil former.
Claim 2
Dependent Claim
59 words
A miniature synchronous motor comprising two sheet metal stator parts with pole teeth, an energizing coil outside said pole teeth, an insulating moulded former carrying said coil, and a rotor, one stator part being imbedded in said coil former so as to be rigidly connected therewith and a bearing seating for a rotor bearing carried by said coil former.
Claim 3
Dependent Claim
19 words
A motor as recited in claim 1, including a bearing pin for a ratchet wheel carried by said former.
Claim 4
Dependent Claim
50 words
A motor as recited in claim 1, including a shell of insulating plastics material loosely inserted between the other stator part and said coil former, a radial flange on said shell carrying another bearing seating and an axial flange on said shell covering the coil space of said coil former.
Claim 5
Dependent Claim
26 words
A motor as recited in claim 3, wherein said coil former and said radial flange of said shell are provided with interlocking shoulders centering as means.
Claim 6
Dependent Claim
36 words
A motor as recited in claim 1, wherein said former has a free end flange provided with grooves to receive connecting cables and solder joints, with notches or grooves for passing coil ends and tappings through.
Claim 7
Dependent Claim
28 words
A motor as recited in claim 5, wherein said end flange, at least at one point, is double-walled to form a passage groove for the inner coil end.
Claim 8
Dependent Claim
26 words
A motor as recited in claim 3, wherein said radial flange of said coil former has a weakened, elastic point which permits a flush bearing position.
Claim 9
Dependent Claim
24 words
A motor as recited in claim 1, wherein said bearing seating is formed as a shell, and a metal bearing inserted in said shell.
Claim 10
Dependent Claim
22 words
A motor as recited in claim 3, including seating means for the coil space defined between said coil former and said shell.
Claim 11
Dependent Claim
29 words
A motor as recited in claim 3, with irregular short-circuit discs located between said other stator part and said shell to press the latter resiliently against said coil former.
Claim 12
Dependent Claim
37 words
A motor as recited in claim 3, wherein said other stator part is shell-shaped and has a substantially cylindrical outer surface, the latter being radially enlarged at one point for receiving the connecting cables for said motor.
Claim 13
Dependent Claim
24 words
A motor as recited in claim 11, wherein said shell has a radially enlarged point which engages in an enlargement of said stator jacket.
Claim 14
Dependent Claim
76 words
A miniature synchronous motor comprising two sheet metal stator parts with pole teeth, an energizing coil, an insulating moulded former carrying said coil, a rotor and a ratchet wheel mounted for cooperation with said rOtor, one stator part being imbedded in said coil former so as to be rigidly connected therewith and a bearing seating for a rotor bearing and a bearing pin for said ratchet wheel being made in one piece with said coil former.
Claim 15
Dependent Claim
76 words
A miniature synchronous motor comprising two sheet metal stator parts with pole teeth, an energizing coil, an insulating moulded former carrying said coil, a rotor and a ratchet wheel mounted for cooperation with said rOtor, one stator part being imbedded in said coil former so as to be rigidly connected therewith and a bearing seating for a rotor bearing and a bearing pin for said ratchet wheel being made in one piece with said coil former.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |