US4476405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing cooling mechanism for vehicular A.C. generator
Assignee: Balzers und Leybold Deutschland Holding AG
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Filing: 1982-12-22
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Granted: 1984-10-09
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Expires: 2002-12-22
Abstract
Abstract A bearing cooling mechanism for a vehicular A.C. generator including a rotor having a rotary shaft rotatably mounted to a frame through two opposite bearings comprises a pulley and a cooling fan fixed in overlapped relationship on the rotary shaft at one end protruding from the adjacent bearing and, in addition to holes disposed on both end surfaces of the frame, four ventilating holes extending at equal angular intervals through those portions of the overlapped pulley and cooling fan adjacent to the rotary shaft.
Inventors
- 👤 Keiichi Komurasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04; H02K9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A bearing cooling mechanism for a vehicular AC generator comprising a frame, a rotary shaft of a rotor rotatably mounted to said frame through a pair of opposite bearings, a pulley and a cooling fan fixedly secured in overlapped relationship on said rotary shaft at one end thereof protruding from an adjacent one of said bearings, and a plurality of ventilating holes extending through portions of said pulley and cooling fan adjacent to said rotary shaft to be located at predetermined equal angular intervals about the longitudinal axis of said rotary shaft.
Claim 2
Dependent Claim
92 words
A bearing cooling mechanism for a vehicular AC generator comprising a frame, a rotary shaft of a rotor rotatably mounted to said frame through a pair of opposite bearings, a pulley and a cooling fan fixedly secured in overlapped relationship on said rotary shaft at one end thereof protruding from an adjacent one of said bearings, and a plurality of ventilating holes extending through portions of said pulley and cooling fan adjacent to said rotary shaft to be located at predetermined equal angular intervals about the longitudinal axis of said rotary shaft.
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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) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |