US3908138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator core and armature core for a vibrating motor
Assignee: Dresser Industries Inc
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Filing: 1974-04-08
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Granted: 1975-09-23
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Expires: 1994-04-08
Abstract
Abstract A vibrating motor with a stator and an armature, in which the stator and the armature are formed from an endless core element. The endless core element is made by winding a band of magnetically permeable material upon itself. The endless core element is then cut into two complementary parts, one of which forms the stator core and the other forms the armature core.
Inventors
- 👤 Ming K Shieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:16
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
In a vibratinG motor comprising a stator which can be alternately magnetized and demagnetized and an armature connected to the stator by spring means and disposed opposite the stator such that it is attracted toward the magnetized stator and released by the demagnetized stator to produce vibratory movement of the armature relative to the stator, the improvement wherein the stator includes a core having two magnetic poles and comprised of a plurality of concentric layers of magnetically permeable material extending in a generally horseshoe configuration from pole to pole, and wherein the armature includes a core comprised of a plurality of concentric layers of magnetically permeable material, the layers of said armature core corresponding generally to the layers of said stator core and each extending from end to end of said armature core, the ends of said armature core being disposed in spaced relationship opposite the poles of said stator.
Claim 2
Dependent Claim
150 words
In a vibratinG motor comprising a stator which can be alternately magnetized and demagnetized and an armature connected to the stator by spring means and disposed opposite the stator such that it is attracted toward the magnetized stator and released by the demagnetized stator to produce vibratory movement of the armature relative to the stator, the improvement wherein the stator includes a core having two magnetic poles and comprised of a plurality of concentric layers of magnetically permeable material extending in a generally horseshoe configuration from pole to pole, and wherein the armature includes a core comprised of a plurality of concentric layers of magnetically permeable material, the layers of said armature core corresponding generally to the layers of said stator core and each extending from end to end of said armature core, the ends of said armature core being disposed in spaced relationship opposite the poles of said stator.
Claim 3
Dependent Claim
38 words
A vibrating motor as recited in claim 1, wherein said stator core and armature core are severed complementary sections of a coil formed by winding a band of said permeable material upon itself in a plurality of layers.
Claim 4
Dependent Claim
31 words
A vibrating motor as recited in claim 2 in which said continuous band of material is grain oriented to enhance the permeability of the stator core and of the armature core.
Claim 5
Dependent Claim
35 words
A vibrating motor as recited in claim 2, wherein the stator core has two parallel legs adjacent its polar ends, and wherein an electrical magnetizing coil is mounted about each leg of the stator core.
Claim 6
Dependent Claim
63 words
A vibrating motor as recited in claim 2, wherein said wound coil has a generally rectangular central opening and wherein the stator core is the larger section of said coil when the coil is cut at right angles to the long axis of the rectangular opening and close to one end of the opening, and the armature core is the remaining smaller section.
Claim 7
Dependent Claim
22 words
A vibrating motor as recited in claim 1, wherein the armature core is encapsulated in and held together by a hardened resin.
Claim 8
Dependent Claim
22 words
A vibrating motor as recited in claim 1, wherein the stator core is encapsulated in and held together by a hardened resin.
Claim 9
Dependent Claim
27 words
A vibrating motor as recited in claim 6, wherein the armature includes a housing and the armature core is held in said housing by the encapsulating resin.
Claim 10
Dependent Claim
27 words
A vibrating motor as recited in claim 7, wherein the stator includes a housing and the stator core is held in said housing by the encapsulating resin.
References Cited (Backward Citations)
US2479589A
Cited
US2425621A
Cited
US2774000A
Cited
US3020425A
Cited
US3764834A
Cited
US3803431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |