US6873085B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushless motor
Assignee: ThinGap Inc
•
Filing: 2002-04-18
•
Granted: 2005-03-29
•
Expires: 2022-04-18
Abstract
Abstract A brushless motor with a rotor having a magnet and a magnetic return, the magnet and magnetic return being arranged to form a gap therebetween, and a stator having a coil disposed in the gap.
Inventors
- 👤 Gregory S. Graham
- 👤 Gerald W. Yankie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:49
CPC Classifications
H; H02; H02K; H02K1/00; H02K1/06; H02K1/22; H02K1/27; H02K1/2786; H02K1/2787; H02K1/2788; H02K21/00; H02K21/12; H02K3/00; H02K3/04; H02K3/26; H02K3/46; H02K3/47; H02K1/2706; H02K1/272; H02K1/274
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
129 words
A brushless motor, comprising: a rotor having a mounting surface, a magnet disposed on the mounting surface, and a magnetic return without a magnet, the mounting surface and the magnetic return being concentric and arranged to form a gap between the magnet and the magnetic return; and a stator having an ironless coil disposed in the gap, the coil comprising concentric inner and outer winding portions separated by at least one continuous fiber strand wrapped a plurality of times around the inner winding portion, each of the winding portions comprising a plurality of conductive bands with each of the conductive bands of one of the winding portions being coupled to one of the conductive bands of the other winding portion, the winding portions being impregnated with an encapsulation material.
Claim 2
Dependent Claim
129 words
A brushless motor, comprising: a rotor having a mounting surface, a magnet disposed on the mounting surface, and a magnetic return without a magnet, the mounting surface and the magnetic return being concentric and arranged to form a gap between the magnet and the magnetic return; and a stator having an ironless coil disposed in the gap, the coil comprising concentric inner and outer winding portions separated by at least one continuous fiber strand wrapped a plurality of times around the inner winding portion, each of the winding portions comprising a plurality of conductive bands with each of the conductive bands of one of the winding portions being coupled to one of the conductive bands of the other winding portion, the winding portions being impregnated with an encapsulation material.
Claim 3
Dependent Claim
18 words
The brushless motor of claim 1 wherein the rotor further comprises a shaft rotatably supported by the stator.
Claim 4
Dependent Claim
22 words
The brushless motor of claim 1 wherein the rotor further comprises a rotor faceplate supporting the mounting surface and the magnetic return.
Claim 5
Dependent Claim
18 words
The brushless motor of claim 3 wherein the rotor further comprises a shaft coupled to the rotor faceplate.
Claim 6
Dependent Claim
14 words
The brushless motor of claim 1 wherein the magnet comprises a plurality of magnets.
Claim 7
Dependent Claim
18 words
The brushless motor of claim 1 wherein the stator further comprises a stator faceplate supporting the stator coil.
Claim 8
Dependent Claim
19 words
The brushless motor of claim 6 wherein the rotor further comprises a shaft rotatably supported by the stator faceplate.
Claim 9
Dependent Claim
131 words
A brushless motor, comprising: a rotor having a mounting surface, a magnet disposed on the mounting surface, and a magnetic return surrounding the magnet to form a gap therebetween, the magnetic return being configured without a magnet, and wherein the mounting surface and the magnetic return are concentric; and a stator having an ironless coil disposed in the gap, the coil comprising concentric inner and outer winding portions separated by at least one continuous fiber strand wrapped a plurality of times around the inner winding portion, each of the winding portions comprising a plurality of conductive bands with each of the conductive bands of one of the winding portions being coupled to one of the conductive bands of the other winding portion, the winding portions being impregnated with an encapsulation material.
Claim 10
Dependent Claim
131 words
A brushless motor, comprising: a rotor having a mounting surface, a magnet disposed on the mounting surface, and a magnetic return surrounding the magnet to form a gap therebetween, the magnetic return being configured without a magnet, and wherein the mounting surface and the magnetic return are concentric; and a stator having an ironless coil disposed in the gap, the coil comprising concentric inner and outer winding portions separated by at least one continuous fiber strand wrapped a plurality of times around the inner winding portion, each of the winding portions comprising a plurality of conductive bands with each of the conductive bands of one of the winding portions being coupled to one of the conductive bands of the other winding portion, the winding portions being impregnated with an encapsulation material.
Claim 11
Dependent Claim
16 words
The brushless motor of claim 8 wherein the mounting surface and the magnetic return are cylindrical.
Claim 12
Dependent Claim
30 words
The brushless motor of claim 9 wherein the stator coil is cylindrical and is disposed in the gap concentrically with the mounting surface and the magnetic return of the rotor.
Claim 13
Dependent Claim
34 words
The brushless motor of claim 8 wherein the magnet comprises a plurality of magnets each extending along the mounting surface in an axial direction and being spaced apart an equal distance from one another.
Claim 14
Dependent Claim
27 words
The brushless motor of claim 8 wherein the stator further comprises a stator faceplate supporting the stator coil, the rotor being rotatably supported by the stator faceplate.
Claim 15
Dependent Claim
27 words
The brushless motor of claim 12 wherein the rotor further comprises a shaft supported by the rotor faceplate, the shaft being rotatably mounted to the stator faceplate.
Claim 16
Dependent Claim
70 words
The brushless motor of claim 8 wherein the rotor further comprises a rotor faceplate with the mounting surface and the magnetic return concentrically extending therefrom in an axial direction, and a shaft extending axially along a central axis common to the mounting surface and the magnetic return, and wherein the stator further comprises a stator faceplate supporting the stator coil, the rotor shaft being rotatably supported by the stator faceplate.
Claim 17
Dependent Claim
19 words
The brushless motor of claim 14 wherein the mounting surface, the magnetic return, and the stator coil are cylindrical.
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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) | 2008-03-28 | 2008-09-27 | 2009-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-03-28 | 2012-09-27 | 2013-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-03-28 | 2016-09-27 | 2017-03-29 | $7700.00 | Window Closed / Lapsed |