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US4079275A Expired / Lapsed US ⏱️ 0.0 years remaining

Oil-cooled motor

Assignee: Individual
•
Filing: 1976-03-03
•
Granted: 1978-03-14
•
Expires: 1996-03-03
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Abstract

Abstract This invention provides an oil-cooled motor, the housing of the motor comprising an oil storage chamber and at least one passage communicating with the storage chamber. The storage chamber is connected with one end of the armature shaft of the motor, while the passageway meets the other end of the armature shaft. Also, the armature shaft is provided with an axial passage communicating with the storage chamber and the passageway in the housing, whereby, during operation of the motor, the cooling oil will circulate along said passage and passageway and thus maintain the motor at a reduced operating temperature level. In another embodiment according to this invention, the housing of the motor is further provided with a second storage chamber around gearing at the output end of the armature shaft, and the oil stored in the second chamber is in communication with the passageway provided in the housing and the passage in the armature shaft. With this arrangement, better cooling effect may be obtained.

Inventors

  • 👤 Chin-fa Fu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 09:52
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/02; F16H1/04; F16H1/06; H; H02; H02K; H02K1/00; H02K1/06; H02K1/12; H02K1/14; H02K1/146; H02K1/148; H02K5/00; H02K5/04; H02K5/16; H02K5/173; H02K5/1732; H02K5/20; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19991

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 160 words
In an oil-cooled motor comprising an armature, shaft, gearing at the output end of the armature shaft, and a housing for said armature and said shaft, the improvement wherein: said housing includes a first oil storage chamber therein containing cooling oil; said housing includes at least one passageway communicating with said first storage chamber; said shaft of said armature is provided with an axial passage communicating at one end of said shaft with said first storage chamber, and at the other end of said shaft with said housing passageway; and a second storage chamber is provided around the gearing at the output end of the armature shaft, the oil stored in said second chamber being in communication with said passageway provided in said housing and said passage in said armature shaft, whereby, during operation of said motor, cooling oil will circulate along said armature axial passage and said housing passageway to maintain said motor at a low operating temperature level.
Claim 2
Dependent Claim 160 words
In an oil-cooled motor comprising an armature, shaft, gearing at the output end of the armature shaft, and a housing for said armature and said shaft, the improvement wherein: said housing includes a first oil storage chamber therein containing cooling oil; said housing includes at least one passageway communicating with said first storage chamber; said shaft of said armature is provided with an axial passage communicating at one end of said shaft with said first storage chamber, and at the other end of said shaft with said housing passageway; and a second storage chamber is provided around the gearing at the output end of the armature shaft, the oil stored in said second chamber being in communication with said passageway provided in said housing and said passage in said armature shaft, whereby, during operation of said motor, cooling oil will circulate along said armature axial passage and said housing passageway to maintain said motor at a low operating temperature level.
Claim 3
Dependent Claim 45 words
An oil-cooled motor as defined in claim 1, wherein, said housing comprises an upper section and a lower section, and said first oil storage chamber and second storage chamber and said passageway are formed by connecting the upper section and lower section in liquid-tight manner.
Claim 4
Dependent Claim 74 words
An oil-cooled motor as defined in claim 1, wherein, said housing is further provided with a vertical passage, one end of sid vertical passage being in communication with said first oil storage chamber, the other end of said vertical passage being in communication with the space outside said housing for filling said first oil storage chamber with cooling oil, and wherein said motor includes a seal member for the closing of said vertical passage.

References Cited (Backward Citations)

US2077580A Cited
US2780737A Cited
US2984122A Cited
US3184624A Cited
US3313964A Cited
US3479541A Cited
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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) 1981-03-13 1981-09-12 1982-03-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-03-13 1985-09-12 1986-03-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-03-13 1989-09-12 1990-03-14 $7700.00 Window Closed / Lapsed

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