US3573510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion thrust washer
Assignee: General Electric Co
•
Filing: 1969-06-09
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Granted: 1971-04-06
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Expires: 1989-06-09
Abstract
Abstract A unitary, imperforate disclike thrust washer member carried by a dynamo electric machine rotor shaft is annularly recessed on one face with one recess wall slotted at spaced circumferential positions to form a plurality of flexible spring fingers which extend axially beyond a rigid thrust runner, and annularly recessed on the opposite face to form a cone-shaped oil pumping surface.
Inventors
- 👤 Charles W Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:16
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/16; H02K5/167; H02K5/1672; F; F16; F16C; F16C17/00; F16C17/04; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/10; F16C33/1025; F16C33/103; F16C33/72; F16C33/74; F16C2380/00; F16C2380/26
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
160 words
A unitary thrust bearing member for use in electric motors having rotatable parts, said member comprising: a unitary disc including a hub portion and having an axially extending bore arranged to mount said member on a motor shaft, a first annular recess formed within one end face of said disc, a flexible thin wall flange formed by said recess and said bore and having an axial length in excess to that of the remainder of said hub portion, said flange being slotted at circumferentially spaced points to form resilient fingers with the ends of said fingers extending radially inward prior to placement of said hub portion on said shaft, said one end face including a rigid portion acting as a thrust runner, said other end face including an outwardly inclined circumferential surface for slinging collected lubrication oil radially outwards, and said disc further including a radially imperforate portion forming an axial oil barrier for oil seeping along the shaft periphery.
Claim 2
Dependent Claim
160 words
A unitary thrust bearing member for use in electric motors having rotatable parts, said member comprising: a unitary disc including a hub portion and having an axially extending bore arranged to mount said member on a motor shaft, a first annular recess formed within one end face of said disc, a flexible thin wall flange formed by said recess and said bore and having an axial length in excess to that of the remainder of said hub portion, said flange being slotted at circumferentially spaced points to form resilient fingers with the ends of said fingers extending radially inward prior to placement of said hub portion on said shaft, said one end face including a rigid portion acting as a thrust runner, said other end face including an outwardly inclined circumferential surface for slinging collected lubrication oil radially outwards, and said disc further including a radially imperforate portion forming an axial oil barrier for oil seeping along the shaft periphery.
Claim 3
Dependent Claim
18 words
The unitary thrust bearing member as claimed in claim 1 wherein said bearing member is formed of nylon.
Claim 4
Dependent Claim
27 words
The unitary thrust bearing member as claimed in claim 1 wherein said bearing member is formed of a tough, wear resistant material having a self lubricating property.
Claim 5
Dependent Claim
27 words
The unitary thrust bearing member as claimed in claim 1 wherein said other end face carries a second annular recess to define said outwardly inclined circumferential surface.
Claim 6
Dependent Claim
34 words
The unitary thrust bearing member as claimed in claim 1 wherein said fingers carry reversely turned ends whose terminal portions define an internal diameter smaller than the diameter of the shaft receiving the same.
Claim 7
Dependent Claim
37 words
The unitary thrust bearing member as claimed in claim 1 wherein said multiple resilient fingers terminate in radially inwardly inclined ends whose peripheral edges define a diameter less than the diameter of the shaft receiving the same.
Claim 8
Dependent Claim
22 words
The unitary thrust bearing member as claimed in claim 6 whose fingers are internally apertured to increase the resilience of the same.
Claim 9
Dependent Claim
121 words
In an electric motor, a shaft, a rotor fixably secured on said shaft, sleeve bearing means for rotatably supporting said shaft, stationary thrust receiving means, a unitary thrust member mounted on said shaft between said rotor and said thrust receiving means, said thrust member including a radially imperforate portion forming an oil barrier for oil seeping inwardly along the rotor shaft from said sleeve bearing means, a radially inclined surface for slinging lubrication oil which is received from said shaft duriNg rotation, an axially extending flexible portion forming axial spring means adapted to contact said thrust receiving means and a second rigid, radial surface forming a thrust runner for said unitary thrust member and adapted to contact said thrust receiving means.
Claim 10
Dependent Claim
121 words
In an electric motor, a shaft, a rotor fixably secured on said shaft, sleeve bearing means for rotatably supporting said shaft, stationary thrust receiving means, a unitary thrust member mounted on said shaft between said rotor and said thrust receiving means, said thrust member including a radially imperforate portion forming an oil barrier for oil seeping inwardly along the rotor shaft from said sleeve bearing means, a radially inclined surface for slinging lubrication oil which is received from said shaft duriNg rotation, an axially extending flexible portion forming axial spring means adapted to contact said thrust receiving means and a second rigid, radial surface forming a thrust runner for said unitary thrust member and adapted to contact said thrust receiving means.
Claim 11
Dependent Claim
16 words
The electric motor as claimed in claim 8 wherein said thrust member comprises a nylon molding.
Claim 12
Dependent Claim
25 words
The electric motor as claimed in claim 8 wherein said thrust member comprises a molding of tough, wear resistant material having a self lubricating property.
Claim 13
Dependent Claim
120 words
The electric motor as claimed in claim 8 wherein said thrust member comprises a configured disc including a hub portion having an outer face which carries a first annular recess to define the hub bore, a thin annular flange in contact with the shaft periphery with the flange extending axially beyond the hub portion, said flange being slit at spaced circumferential positions to form multiple thin, flexible fingers such that the outer ends of said fingers initially contact the stationary thrust receiving means at low thrust loads but are bent at right angles into said first recess during heavy axial loading with the face of the hub member adjacent said first recess in contact with the stationary thrust receiving means.
Claim 14
Dependent Claim
44 words
The electric motor as claimed in claim 11 wherein the outer end surface of said hub portion, radially beyond said annular recess forms the thrust runner which abuts the stationary thrust receiving means under high axial loading and full deflection of said resilient fingers.
Claim 15
Dependent Claim
30 words
The electric motor as claimed in claim 12 wherein the other end surfaces of said hub portion carry a second annular recess which defines said radially inclined oil flow surface.
Claim 16
Dependent Claim
22 words
The electric motor as claimed in claim 8 wherein said individual fingers are internally apertured to increase the resilience of the same.
References Cited (Backward Citations)
US3235317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |