Patent US3648090A successfully refreshed from Google Patents.
US3648090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machine
Assignee: Mavilor Systemes SA
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Filing: 1969-12-24
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Granted: 1972-03-07
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Expires: 1989-12-24
Abstract
Abstract A dynamo-electric machine or motor having rotor windings and commutator blades embedded in insulating material rotatable in an airgap defined between external and internal magnetic circuit portions, the rotor position being adjustable through the use of surface cams or shims and the airgap width being adjustable by shims, the rotor being internally cooled by way of apertures in said rotor and channels in the internal magnetic circuit portion, the rotor being reinforced by filaments binding the rotor conductors and a central, radially deformable, bush, commutator brushes being carried by holders radially slidably mounted on an angularly adjustable support and accessible externally of the motor, and magnetic field producing elements being at the internal portion of the circuit and/or being provided by a permanent or electromagnetic tubular member with L-shaped pole pieces.
Inventors
- 👤 Robert Voin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:04
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/56; H02K23/40; H02K23/48; H02K3/00; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/148; H02K9/00; H02K9/02; H02K9/04; H02K9/06
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
250 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, the improvement comprising: a. means for adjusting the axial position of said rotor relative to said outer and inner stator portions, said adjusting means including 1. a first member positioned on said rotor shaft and restrained against angular movement relative to said rotor and against axial movement relative to said stator, said member having a camming surface portion inclined relative to the axis of rotation of said rotor, and 2. a second member positioned on said rotor shaft angularly movable relative to said rotor and restrained against axial movement relative to said rotor, said member having a camming surface inclined relative to said axis of rotation, the camming surfaces of said first and second members being juxtaposed whereby angular movement of said members with respect to each other varies the relative axial position of said rotor and stator portions so as to correspondingly vary the size of said airgaps; and b. means for securing said members against relative angular motion in any of a plurality of angularly displaced positions.
Claim 2
Dependent Claim
250 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, the improvement comprising: a. means for adjusting the axial position of said rotor relative to said outer and inner stator portions, said adjusting means including 1. a first member positioned on said rotor shaft and restrained against angular movement relative to said rotor and against axial movement relative to said stator, said member having a camming surface portion inclined relative to the axis of rotation of said rotor, and 2. a second member positioned on said rotor shaft angularly movable relative to said rotor and restrained against axial movement relative to said rotor, said member having a camming surface inclined relative to said axis of rotation, the camming surfaces of said first and second members being juxtaposed whereby angular movement of said members with respect to each other varies the relative axial position of said rotor and stator portions so as to correspondingly vary the size of said airgaps; and b. means for securing said members against relative angular motion in any of a plurality of angularly displaced positions.
Claim 3
Dependent Claim
99 words
a second member positioned on said rotor shaft angularly movable relative to said rotor and restrained against axial movement relative to said rotor, said member having a camming surface inclined relative to said axis of rotation, the camming surfaces of said first and second members being juxtaposed whereby angular movement of said members with respect to each other varies the relative axial position of said rotor and stator portions so as to correspondingly vary the size of said airgaps; and b. means for securing said members against relative angular motion in any of a plurality of angularly displaced positions.
Claim 4
Dependent Claim
99 words
a second member positioned on said rotor shaft angularly movable relative to said rotor and restrained against axial movement relative to said rotor, said member having a camming surface inclined relative to said axis of rotation, the camming surfaces of said first and second members being juxtaposed whereby angular movement of said members with respect to each other varies the relative axial position of said rotor and stator portions so as to correspondingly vary the size of said airgaps; and b. means for securing said members against relative angular motion in any of a plurality of angularly displaced positions.
Claim 5
Dependent Claim
169 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, the improvement comprising: means for adjusting the axial position of said rotor relative to said outer and inner stator portions, said adjusting means including two groups of interchangeable shims positioned in predetermined spaced relationship along said rotor shaft and fixed axially relative to said stAtor, said shims being removable to permit displacement of one shim from one of said groups into the other group to vary the relative axial position of said rotor and said stator portions so as to effectively vary the size of the airgaps therebetween.
Claim 6
Dependent Claim
169 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, the improvement comprising: means for adjusting the axial position of said rotor relative to said outer and inner stator portions, said adjusting means including two groups of interchangeable shims positioned in predetermined spaced relationship along said rotor shaft and fixed axially relative to said stAtor, said shims being removable to permit displacement of one shim from one of said groups into the other group to vary the relative axial position of said rotor and said stator portions so as to effectively vary the size of the airgaps therebetween.
Claim 7
Dependent Claim
78 words
A dynamoelectric motor as claimed in claim 2 wherein said rotor is formed of a moulded insulating plastic material; rotor windings embedded in said insulating material, and at least one binding filament wound at an angle to the conductors of said windings and binding said rotor at at least one side of said windings, said binding peripherally encompassing the frustoconical portion of said rotor so as to provide a reinforcing hoop member resisting deformation of said rotor position.
Claim 8
Dependent Claim
175 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular-frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor being formed of a moulded insulating plastic material; rotor windings embedded in said insulating material, and at least one binding filament wound at an angle to the conductors of said windings and binding said rotor at at least one side of said windings, said binding peripherally encompassing the frustoconical portion of said rotor so as to provide a reinforcing hoop member resisting deformation of said rotor portion, said rotor being hollow and apertured to provide a ventilation path within said rotor; and a fan for producing ventilation currents around and within said rotor.
Claim 9
Dependent Claim
175 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular-frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor being formed of a moulded insulating plastic material; rotor windings embedded in said insulating material, and at least one binding filament wound at an angle to the conductors of said windings and binding said rotor at at least one side of said windings, said binding peripherally encompassing the frustoconical portion of said rotor so as to provide a reinforcing hoop member resisting deformation of said rotor portion, said rotor being hollow and apertured to provide a ventilation path within said rotor; and a fan for producing ventilation currents around and within said rotor.
Claim 10
Dependent Claim
21 words
A dynamoelectric motor as claimed in claim 4, wherein said at least one filament extends at both sides of said conductors.
Claim 11
Dependent Claim
27 words
A dynamoelectric motor as claimed in claim 4, comprising at least one further filament which interlaces said at least one filament at both sides of said conductors.
Claim 12
Dependent Claim
28 words
A dynamoelectric motor as claimed in claim 4, comprising at least one further filament which interlaces said at least one filament at the internal side of said conductors.
Claim 13
Dependent Claim
25 words
A dynamoelectric motor as claimed in claim 4, wherein said one filament binds said conductors by interlacing said conductors and crossing said conductors at intervals.
Claim 14
Dependent Claim
173 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular-frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor being formed of a moulded insulating plastic material; rotor windings embedded in said insulating material, and at least one binding filament wound at an angle to the conductors of said windings and binding said rotor at at least one side of said windings, said binding peripherally encompassing the frustoconical portion of said rotor so as to provide a reinforcing hoop member resisting deformation of said rotor portion, a bushing about which said rotor is moulded, said bushing being radially deformable; and a drive member adapted to be received in said bushing.
Claim 15
Dependent Claim
173 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular-frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor being formed of a moulded insulating plastic material; rotor windings embedded in said insulating material, and at least one binding filament wound at an angle to the conductors of said windings and binding said rotor at at least one side of said windings, said binding peripherally encompassing the frustoconical portion of said rotor so as to provide a reinforcing hoop member resisting deformation of said rotor portion, a bushing about which said rotor is moulded, said bushing being radially deformable; and a drive member adapted to be received in said bushing.
Claim 16
Dependent Claim
21 words
A dynamoelectric motor as claimed in claim 9, wherein said drive member comprises a drive sleeve force fitted into said bushing.
Claim 17
Dependent Claim
29 words
A dynamoelectric motor as claimed in claim 10, wherein said drive sleeve is fitted into said radially deformable bushing before said bushing has been molded to said rotor-insulating material.
Claim 18
Dependent Claim
29 words
A dynamoelectric motor as claimed in claim 10, wherein said drive sleeve is fitted into said radiaLly deformable bushing after said bushing has been molded to said rotor-insulating material.
Claim 19
Dependent Claim
30 words
A dynamoelectric motor as claimed in claim 9, wherein the bushing has regularly distributed slots, the ends of said slots being closed at at least one end of said bushing.
Claim 20
Dependent Claim
15 words
A dynamoelectric motor as claimed in claim 13, wherein said slots are of helical form.
Claim 21
Dependent Claim
23 words
A dynamoelectric motor as claimed in claim 9, comprising a lattice form bushing interposed between said rotor-insulating material and said radially deformable bushing.
Claim 22
Dependent Claim
125 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said stator including a housing containing apertures to provide ventilation paths within said housing; a fan for producing ventilation currents through said paths, said rotor being hollow and apertured with through bores to provide at least one of said ventilation paths within said rotor.
Claim 23
Dependent Claim
125 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said stator including a housing containing apertures to provide ventilation paths within said housing; a fan for producing ventilation currents through said paths, said rotor being hollow and apertured with through bores to provide at least one of said ventilation paths within said rotor.
Claim 24
Dependent Claim
32 words
A dynamoelectric motor as claimed in claim 16, comprising two magnetic circuit parts one within the other, both said circuit parts being located within said rotor and defining between them ventilation channels.
Claim 25
Dependent Claim
32 words
A dynamoelectric motor as claimed in claim 16, comprising a magnetic circuit portion within said rotor and at least one of the internal and external surfaces of said portion defining ventilation grooves.
Claim 26
Dependent Claim
195 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor and stator portions defining a magnetic circuit having a first portion surrounding said rotor and a second portion within said rotor and defining with said first portion said airgaps in which said rotor is rotatable; and magnetic field producing means provided by said second portion and formed by a tubular magnet and two pairs of opposed L-shaped arms each having a radial portion extending substantially radially from said magnet followed by portions extending with an axial component, said radial portions of one of said pairs being at one end region of said magnet and said radial portions of the other of said pairs being at the other end region of said magnet.
Claim 27
Dependent Claim
195 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor and stator portions defining a magnetic circuit having a first portion surrounding said rotor and a second portion within said rotor and defining with said first portion said airgaps in which said rotor is rotatable; and magnetic field producing means provided by said second portion and formed by a tubular magnet and two pairs of opposed L-shaped arms each having a radial portion extending substantially radially from said magnet followed by portions extending with an axial component, said radial portions of one of said pairs being at one end region of said magnet and said radial portions of the other of said pairs being at the other end region of said magnet.
Claim 28
Dependent Claim
16 words
A dynamoelectric motor as claimed in claim 19, wherein said tubular magnet is a permanent magnet.
Claim 29
Dependent Claim
22 words
A dynamoelectric motor as claimed in claim 19, wherein said tubular magnet is a tubular core provided with a single cylindrical coil.
Claim 30
Dependent Claim
163 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor and stator portions defining a magnetic circuit having a first portion surrounding said rotor and a second portion within said rotor and defining with said first portion said airgaps in which said rotor is rotatable; and magnetic field producing means provided by said second portiOn, said second portion comprising a cruciform arrangement of radial arms, and pole pieces at the outer end of said arms, said first portion being a ring forming at least a part of a machine frame.
Claim 31
Dependent Claim
163 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, said rotor and stator portions defining a magnetic circuit having a first portion surrounding said rotor and a second portion within said rotor and defining with said first portion said airgaps in which said rotor is rotatable; and magnetic field producing means provided by said second portiOn, said second portion comprising a cruciform arrangement of radial arms, and pole pieces at the outer end of said arms, said first portion being a ring forming at least a part of a machine frame.
Claim 32
Dependent Claim
138 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, including a cooling fan for setting up ventilation currents in said motor; and a subsidiary motor defined by a subsidiary stator and a subsidiary rotor rotatable independently of said first-mentioned motor for driving said fan, said subsidiary rotor being of cylindrical tapering form to have an axial extent small in comparison with that of said first rotor.
Claim 33
Dependent Claim
138 words
A dynamoelectric motor of the brush and collector type comprising a rotor and a stator; said stator including a fixed stator portion outside the rotor and a further stator portion inside the rotor; said rotor being mounted on a rotor shaft and including a generally frustoconical portion arranged between said outer and inner stator portions so as to provide essentially annular frustoconical airgaps between, respectively, the outer stator portion and the rotor, and between the inner stator portion and the rotor, including a cooling fan for setting up ventilation currents in said motor; and a subsidiary motor defined by a subsidiary stator and a subsidiary rotor rotatable independently of said first-mentioned motor for driving said fan, said subsidiary rotor being of cylindrical tapering form to have an axial extent small in comparison with that of said first rotor.
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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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |