[미국특허]
Electric motor having multiple armatures
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02K-016/00
H02K-023/00
출원번호
US-0991657
(2004-11-18)
등록번호
US-7400077
(2008-07-15)
발명자
/ 주소
Caroon,Robert S.
출원인 / 주소
Electric Motor Development, Inc.
대리인 / 주소
Bowman Green Hampton & Kelly, PLLC
인용정보
피인용 횟수 :
14인용 특허 :
19
초록▼
An electric motor that includes a housing, a rotatable axle, a first field armature, which is disposed substantially around the axle and secured to the axle, and which includes a plurality of first field magnets spaced around the first field armature, a second field armature, which is disposed subst
An electric motor that includes a housing, a rotatable axle, a first field armature, which is disposed substantially around the axle and secured to the axle, and which includes a plurality of first field magnets spaced around the first field armature, a second field armature, which is disposed substantially around the first field armature and secured to the axle, and which includes a plurality of second field magnets spaced around the second field armature, an electromagnetic member, which is disposed between the first field armature and secured to the housing. The electromagnetic member includes a plurality of electromagnets spaced around the electromagnetic member, wherein each electromagnet includes a winding that is electrically coupled to an appropriate current source, wherein each winding is capable of being sequentially electrically coupled to a current source, such that an appropriate current may be sequentially provided to each winding.
대표청구항▼
What is claimed is: 1. An electric motor apparatus, comprising: a housing; a rotatable axle, wherein the rotatable axle is maintained in a fixed axial position relative to the housing by bushings, and wherein the bushings are coupled to the housing; an input brush electrically coupled to an appropr
What is claimed is: 1. An electric motor apparatus, comprising: a housing; a rotatable axle, wherein the rotatable axle is maintained in a fixed axial position relative to the housing by bushings, and wherein the bushings are coupled to the housing; an input brush electrically coupled to an appropriate current source; an input segment coupled to the rotatable axle and disposed substantially around the rotatable axle, wherein the input brush is in electrical contact with the input segment; a commutator coupled to the rotatable axle and disposed substantially around the rotatable axle, wherein the commutator comprises multiple electrically conductive segments and multiple non-conductive segments arranged sequentially around the commutator and wherein each electrically conductive segment is electrically coupled to the input segment; a commutator brush capable of being in sequential electrical contact with each electrically conductive segment as the axle is rotated; a first field armature, wherein the first field armature comprises a plurality of first field magnets spaced around the first field armature, wherein the first field armature is disposed substantially around the axle, and wherein the first field armature is coupled to the axle; a second field armature, wherein the second field armature comprises a plurality of second field magnets spaced around the second field armature, wherein the second field armature is disposed substantially around the first field armature, and wherein the second field armature is coupled to the axle; an electromagnetic member, wherein the electromagnetic member comprises a plurality of electromagnets spaced around the electromagnetic member, wherein each electromagnet comprises a winding that is electrically coupled to the electrically conductive segments of the commutator, wherein the electromagnetic member is disposed between the first field armature and the second field armature, such that the first field armature is disposed substantially inside the electromagnetic member and the second field armature is disposed substantially outside the electromagnetic member, and wherein the electromagnetic member is coupled to the housing; and wherein, as the axle rotates, when the commutator brush is in electrical contact with an electrically conductive segment of the commutator, each winding is simultaneously electrically coupled to the appropriate current source, such that, an appropriate electrical current is simultaneously provided to each winding, and wherein the input segment comprises a portion of the rotatable axle and wherein at least a portion of the rotatable axle is electrically coupled to the electrically conductive segments of the commutator such that electrical current may be provided to the electrically conductive segments of the commutator. 2. The apparatus of claim 1, wherein the field magnets comprise iron core magnets. 3. The apparatus of claim 1, wherein the first field armature comprises eight first field magnets. 4. The apparatus of claim 1, wherein the bushings comprise ball bearings, magnetic bearings, Teflon, or an equivalent. 5. The apparatus of claim 1, wherein the second field armature comprises eight second field magnets. 6. The apparatus of claim 1, wherein the first field armature forms a substantially concentric circle around the axle. 7. The apparatus of claim 1, wherein the second field armature forms substantially concentric circle around the first field armature. 8. The apparatus of claim 1, wherein the number of electromagnets corresponds to the number of field magnets included in the first field armature. 9. The apparatus of claim 1, wherein the input segment comprises a portion of the commutator and is electrically coupled to the electrically conductive segments of the commutator such that electrical current may be provided to the electrically conductive segments of the commutator. 10. The apparatus of claim 1, comprising: a third field armature, wherein the third field armature comprises a plurality of third field magnets spaced around the third field armature, wherein the third field armature is disposed substantially around the second field armature, and wherein the third field armature is coupled to the axle; a second electromagnetic member, wherein the second electromagnetic member comprises a plurality of second electromagnets spaced around the second electromagnetic member, wherein each second electromagnet comprises a winding that is electrically coupled to an appropriate segment of the commutator, wherein the second electromagnetic member is disposed between the second field armature and the third field armature, such that the second field armature is disposed substantially inside the second electromagnetic member and the third field armature is disposed substantially outside the second electromagnetic member, and wherein the second electromagnetic member is coupled to the housing. 11. The apparatus of claim 10, wherein the plurality of second field magnets comprises a plurality of inner second field magnets disposed substantially along an inner side of the second field armature and a plurality of outer second field magnets disposed substantially along an outer side of the second field armature. 12. The apparatus of claim 1, comprising multiple additional field armatures and electromagnetic members, wherein each field armature is coupled to the axle of the electric motor and each electromagnetic member is coupled to the housing.
Mole Cecil J. (Monroeville PA) Wright Dexter V. (Pittsburgh PA), Structureborne vibration-compensated motor arrangement having back-to-back twin AC motors.
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