US3666978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side ported inlet cover for generators
Assignee: Motors Liquidation Co
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Filing: 1970-11-25
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Granted: 1972-05-30
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Expires: 1990-11-25
Abstract
Abstract A cylindrical-like cover, the end of which is impervious to air flow and the axially extending sides of which have ports, is adapted to be removably attached to one side of a ducted end wall of an alternator housing. A voltage regulator and rectifier comprised of semiconductors are attached to the other side of the end wall in proximity to the air ducts and are cooled by means of a fan that draws air in radially through the ports in the cover when attached and axially through the ducts in the end wall. Debris of a size greater than the ports or a momentum in excess of that which can be overcome by the suction of the alternator fan is blown over the exterior of the alternator and cover by the motor fan. This prevents debris from clogging the end wall and the ducts therein, reduces the tendency of the semiconductor to overheat from the effects of such clogging, and avoids possible charging system faults associated therewith.
Inventors
- 👤 Glen R Renner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:32
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/26; H02K11/00; H02K11/04; H02K11/049; H02K11/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
302 words
A cooling system for a vehicle mounted alternating current generator comprising, a. an alternating current generator having cylindrical side portions the ends of which are joined to first and second radially extending end walls having air inlet and air outlet openings formed respectively therein and supporting a rotor therebetween; b. semiconductor means attached in conductive heat transfer relationship to the interior of said first end wall; c. a generator fan driven by said rotor and disposed adjacent said second end wall for causing air to pass through said generator from said air inlet to said air outlet openings whereby said generator and semiconductor means may be cooled; d. a cover member having an imperforate end section and a perforated circumferentially extending side section, said cover side section removably affixed to and axially displacing said end section from the exterior of said first generator end wall, said side and end sections forming therewith an air inlet compartment; e. an engine driven fan for said vehicle operative to move air along a predetermined path; and f. means supporting said generator in the path of said air circulated by said engine driven fan with said cover member located downstream of said generator fan relative to said air circulated by said engine fan, whereby said perforated side section of said cover permits air circulated by said engine fan to be drawn radially into said compartment by said generator fan and across said end wall and semiconductor means thereon while also cooperating with said imperforate end section to prevent the axial entrance of particles of debris into said generator such particles of debris being substantially prevented from entering the air outlet openings in said second end wall by said generator fan and being carried past said perforated circumferentially extending section of said cover by said engine fan.
Claim 2
Dependent Claim
302 words
A cooling system for a vehicle mounted alternating current generator comprising, a. an alternating current generator having cylindrical side portions the ends of which are joined to first and second radially extending end walls having air inlet and air outlet openings formed respectively therein and supporting a rotor therebetween; b. semiconductor means attached in conductive heat transfer relationship to the interior of said first end wall; c. a generator fan driven by said rotor and disposed adjacent said second end wall for causing air to pass through said generator from said air inlet to said air outlet openings whereby said generator and semiconductor means may be cooled; d. a cover member having an imperforate end section and a perforated circumferentially extending side section, said cover side section removably affixed to and axially displacing said end section from the exterior of said first generator end wall, said side and end sections forming therewith an air inlet compartment; e. an engine driven fan for said vehicle operative to move air along a predetermined path; and f. means supporting said generator in the path of said air circulated by said engine driven fan with said cover member located downstream of said generator fan relative to said air circulated by said engine fan, whereby said perforated side section of said cover permits air circulated by said engine fan to be drawn radially into said compartment by said generator fan and across said end wall and semiconductor means thereon while also cooperating with said imperforate end section to prevent the axial entrance of particles of debris into said generator such particles of debris being substantially prevented from entering the air outlet openings in said second end wall by said generator fan and being carried past said perforated circumferentially extending section of said cover by said engine fan.
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) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |