US3609430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Armature with high resistance end rings and heat dissipation arrangement
Assignee: Individual
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Filing: 1969-10-09
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Granted: 1971-09-28
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Expires: 1989-10-09
Abstract
Abstract An armature including high-resistance end rings and a diskshaped member located on each of the two ends of the core of the armature for obtaining an efficient starting and smooth running motor and increasing the life of the motor. The end rings are of a smaller diameter than the core of the rotor.
Inventors
- 👤 James F Buffington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:58
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/04; H02K17/08; H02K17/16; H02K17/168
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
An armature comprising a cylindrically shaped core of laminated metal plates, said core having transverse grooves on its periphery, a plurality of windings in said grooves, highresistance end rings at each end of said core connecting said windings electrically in parallel and being of a diameter substantially less than said core, a shaft coaxial to said core and protruding from both ends thereof and a disk-shaped plate of high-density material on said shaft at each end of said core in axial alignment therewith, for improving the inertia of the armature and for dissipation of heat generated during the operation of the armature from said end rings, said end rings extending axially outwardly from said windings and being disposed between said disk-shaped plates and said core.
Claim 2
Dependent Claim
125 words
An armature comprising a cylindrically shaped core of laminated metal plates, said core having transverse grooves on its periphery, a plurality of windings in said grooves, highresistance end rings at each end of said core connecting said windings electrically in parallel and being of a diameter substantially less than said core, a shaft coaxial to said core and protruding from both ends thereof and a disk-shaped plate of high-density material on said shaft at each end of said core in axial alignment therewith, for improving the inertia of the armature and for dissipation of heat generated during the operation of the armature from said end rings, said end rings extending axially outwardly from said windings and being disposed between said disk-shaped plates and said core.
Claim 3
Dependent Claim
16 words
An armature as defined in claim 1 in which said disk-shaped plates are constructed of lead.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |