US3731121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutator air deflection
Assignee: General Electric Co
•
Filing: 1971-12-22
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Granted: 1973-05-01
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Expires: 1991-12-22
Abstract
Abstract An air deflector for diverting the flow of forced air moving axially through a motor stator from the drive-end thereof, radially inwardly proximate the armature - commutator transistion point, to cause increased air flow directly over the commutator surface and thereby increase the heat transfer therefrom. Annular sections having concave surfaces toward the commutator are rigidly secured on the stator inner wall to provide the baffle effect.
Inventors
- 👤 W Cook
- 👤 B Turley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:22
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/28
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
123 words
An improved powered wheel assembly of the type having a stator supported at its inner end by a vehicle frame, a rotor mounted in said stator with a commutator at the outer end thereof and a drive means at the inner end thereof, wheel means rotatably mounted on said stator and operably connected to said drive means, and ventilation means adapted to force air axially across said rotor from its drive end toward its commutator end, the improvement comprising: baffle means mounted to said stator in an axial position proximately surrounding the inner end of said commutator so as to direct the flow of ventilating air radially inward toward said commutator and subsequently across its longitudinal length to cause increased heat transfer therefrom.
Claim 2
Dependent Claim
123 words
An improved powered wheel assembly of the type having a stator supported at its inner end by a vehicle frame, a rotor mounted in said stator with a commutator at the outer end thereof and a drive means at the inner end thereof, wheel means rotatably mounted on said stator and operably connected to said drive means, and ventilation means adapted to force air axially across said rotor from its drive end toward its commutator end, the improvement comprising: baffle means mounted to said stator in an axial position proximately surrounding the inner end of said commutator so as to direct the flow of ventilating air radially inward toward said commutator and subsequently across its longitudinal length to cause increased heat transfer therefrom.
Claim 3
Dependent Claim
31 words
A powered wheel assembly as set forth in claim 1 wherein said baffle means comprises at least one annular baffle conforming to and secured to the inner surface of said stator.
Claim 4
Dependent Claim
27 words
A powered wheel assembly as set forth in claim 1 wherein the axial cross section of said baffle is concave in form with respect to the rotor.
Claim 5
Dependent Claim
28 words
A powered wheel assembly as set forth in claim 3 wherein said concave form is uniform in curvature and further wherein the are subtended thereby is approximately 90*.
Claim 6
Dependent Claim
26 words
A powered wheel assembly as set forth in claim 1 wherein said baffle means is secured to said stator by a plurality of radially aligned bolts.
Claim 7
Dependent Claim
111 words
A powered wheel aSsembly comprising: a. a stator supported at its inner end by a vehicle frame; b. a rotor mounted in said stator with a commutator at the outer end thereof and a drive means at the inner end thereof; c. ventilation means for forcing air axially across the outer periphery of said rotor from its drive end toward its commutator end; and d. baffle means mounted to said stator in an axial position prominately surrounding said commutator at its end adjacent said rotor so as to direct the flow of ventilating air radially inward toward said commutator and subsequently across its longitudinal length to cause increased heat transfer therefrom.
Claim 8
Dependent Claim
111 words
A powered wheel aSsembly comprising: a. a stator supported at its inner end by a vehicle frame; b. a rotor mounted in said stator with a commutator at the outer end thereof and a drive means at the inner end thereof; c. ventilation means for forcing air axially across the outer periphery of said rotor from its drive end toward its commutator end; and d. baffle means mounted to said stator in an axial position prominately surrounding said commutator at its end adjacent said rotor so as to direct the flow of ventilating air radially inward toward said commutator and subsequently across its longitudinal length to cause increased heat transfer therefrom.
Claim 9
Dependent Claim
31 words
A powered wheel assembly as set forth in clam 6 wherein said baffle means comprises at least one annular baffle conforming to and secured to the inner surface of said stator.
Claim 10
Dependent Claim
31 words
A powered wheel assembly as set forth in clam 6 wherein said baffle means comprises at least one annular baffle conforming to and secured to the inner surface of said stator.
Claim 11
Dependent Claim
27 words
A powered wheel assembly as set forth in claim 6 wherein the axial cross section of said baffle is concave in form with respect to the rotor.
Claim 12
Dependent Claim
28 words
A powered wheel assembly as set forth in claim 8 wherein said concave form is uniform in curvature and further wherein the arc subtended thereby is approximately 90*.
Claim 13
Dependent Claim
26 words
A powered wheel assembly as set forth in claim 6 wherein said baffle means is secured to said stator by a plurality of radially aligned bolts.
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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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |