Patent US3873864A successfully refreshed from Google Patents.
US3873864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-piece dynamoelectric machine housing
Assignee: Ford Motor Co
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Filing: 1973-12-26
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Granted: 1975-03-25
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Expires: 1993-12-26
Abstract
Abstract The present invention is directed to a two-piece dynamoelectric machine housing which is separated along a plane which includes the axis of rotation of the rotor of the dynamoelectric machine. The housing is readily formable from suitable plastic material by conventional plastic molding techniques and provides greatly improved ease of dynamoelectric machine assembly. The improved ease of assembly is provided by convenient positional placement of the bearing structure between two ridges within one piece of the housing. Final location is assured by the encapsulating effect of complementary ridges upon the full assembly of the housing. The structure further provides for convenient addition of the electrical brushes through suitably provided structure which opens on the exterior portion of the housing thereby permitting the brushes and the brush biasing structure to be added to the dynamoelectric machine in a convenient fashion after assembly of the housing about the rotor and armature bearing structure. The structure also accommodates an exteriorly placed permanent magnet stator field generating structure. The housing further includes plastic structure for receiving the electrical leads, flange structure for convenient mounting and an integrally formed cooling air passage duct.
Inventors
- 👤 Theodore G Apostoleris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:06
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/148; H02K1/00; H02K1/06; H02K1/12; H02K1/17; H02K5/16; H02K5/167; H02K5/1672; H02K5/20; H02K5/207; H02K7/00; H02K7/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
298 words
A molded housing for receiving and supporting the armature bearings and rotary armature of a dynamoelectric machine wherein the rotary armature includes means forming an electric commutator positionable in proximity to, and axially inwardly of, one of thE armature bearings comprising: first and second molded housing sections joinable in a plane, said joining plane arranged to include the axis of rotation of the armature; each housing section having a central portion arranged to define substantially one-half of a rotor receiving cavity; a first pair of bearing retaining ridge means formed in said first housing section central portion, the members of said first pair being at locations axially remote from each other; a second pair of bearing retaining ridge means formed in said second housing section central portion, the members of said second pair being at locations axially remote from each other; the members of said first pair of ridge means being spatially arranged to cooperate with the members of said second pair of ridge means, upon joining of said first and second housing sections, to define first and second axially inwardly located bearing retaining walls, said bearing retaining walls providing substantially 360* of position defining surrounding support for the armature bearings means for maintaining said first and second housing sections joined in assembled relation; and wall means defining first and second electrical brush channels directed generally perpendicularly to the joining plain and situated in proximity to, and axially inwardly of, one of said first and second bearing retaining walls, said first and second brush channels arranged to provide communicating passages from the exterior of said first and second housing sections to the interior of the housing in proximity to the armature commutator whereby electrical brush assembly and servicing may be accomplished which the dynamoelectric machine housing remains assembled.
Claim 2
Dependent Claim
298 words
A molded housing for receiving and supporting the armature bearings and rotary armature of a dynamoelectric machine wherein the rotary armature includes means forming an electric commutator positionable in proximity to, and axially inwardly of, one of thE armature bearings comprising: first and second molded housing sections joinable in a plane, said joining plane arranged to include the axis of rotation of the armature; each housing section having a central portion arranged to define substantially one-half of a rotor receiving cavity; a first pair of bearing retaining ridge means formed in said first housing section central portion, the members of said first pair being at locations axially remote from each other; a second pair of bearing retaining ridge means formed in said second housing section central portion, the members of said second pair being at locations axially remote from each other; the members of said first pair of ridge means being spatially arranged to cooperate with the members of said second pair of ridge means, upon joining of said first and second housing sections, to define first and second axially inwardly located bearing retaining walls, said bearing retaining walls providing substantially 360* of position defining surrounding support for the armature bearings means for maintaining said first and second housing sections joined in assembled relation; and wall means defining first and second electrical brush channels directed generally perpendicularly to the joining plain and situated in proximity to, and axially inwardly of, one of said first and second bearing retaining walls, said first and second brush channels arranged to provide communicating passages from the exterior of said first and second housing sections to the interior of the housing in proximity to the armature commutator whereby electrical brush assembly and servicing may be accomplished which the dynamoelectric machine housing remains assembled.
Claim 3
Dependent Claim
117 words
The dynamoelectric machine housing of claim 1 wherein each of said first and second housing sections further includes an integrally formed mounting flange portion, the mounting flange portions on said first and second housing sections being cooperative to form a substantially continuous mounting flange member, and a shaped wall member interconnecting the mounting flange portion with the central portion of the housing section, said first and second housing section shaped wall members being cooperative upon joining of the first and second housing sections to define an enclosed cooling air conduit for communicating a flow of cooling air from a point remote from the axis of rotation of the armature to a point proximate the rotor receiving cavity.
Claim 4
Dependent Claim
71 words
The dynamoelectric machine housing according to claim 2 wherein said first and second housing section central portions are provided with means for receiving the permanent magnets of a stator flux producing means situated on the exterior of the central portions and said central portions are arranged to provide for a generally cylindrical rotor receiving cavity whereby the air gap between the permanent magnets and the armature may be made axially uniform.
Claim 5
Dependent Claim
60 words
The dynamoelectric machine housing of claim 3 wherein said first and second housing section central portions are provided with a pair of diametrically opposed, axially centrally disposed, tab portions, said tab portions arranged to be in cooperating confronting relation when said first and second housing portions are joined in assembled relation to define stator assembly mounting screw clip receiving recesses.
Claim 6
Dependent Claim
57 words
The dynamoelectric machine housing of claim 3 wherein the stator flux producing means include a pair of cooperating flux path members held in assembled relation by a pair of spring clip members and said means for maintaining said first and second housing sections joined in assembled relation comprise the flux path members and the spring clip members.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |