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US5229673A
Expired / Lapsed
US
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Joint construction of cooling pipes for liquid cooled motor
Assignee: Fanuc Corp
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Filing: 1992-02-03
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Granted: 1993-07-20
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Expires: 2012-02-03
Abstract
Abstract A liquid cooled motor in which cooling pipelines are located in a casing around an outer periphery of a stator core, comprising deformed O-rings (5) provided around the circumferential edges of a deformed cross sectional hole (40) at ends of a casing (1), and circular cross sectional holes (41) of a housing (2, 3) which are connected to parts of the deformed cross sectional hole (40) to connect the casing (1) and the housing (2, 3). The invention is applied to a general small liquid cooled motor which needs high output and high revolution speed.
Inventors
- 👤 Yukio Katsuzawa
- 👤 Michi Masuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:02
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/20; H02K5/203
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
73 words
A joint construction of cooling pipe lines in a liquid cooled motor comprising: a casing having ends formed with deformed cross sectional holes and non-circular grooves non-contiguous with the deformed cross sectional holes and said non-circular grooves surrounding the deformed cross sectional holes; non-circular O-rings provided inside said non-circular grooves; a housing having circular cross sectional holes; and connecting means for connecting said circular cross sectional holes to said deformed cross sectional holes.
Claim 2
Dependent Claim
73 words
A joint construction of cooling pipe lines in a liquid cooled motor comprising: a casing having ends formed with deformed cross sectional holes and non-circular grooves non-contiguous with the deformed cross sectional holes and said non-circular grooves surrounding the deformed cross sectional holes; non-circular O-rings provided inside said non-circular grooves; a housing having circular cross sectional holes; and connecting means for connecting said circular cross sectional holes to said deformed cross sectional holes.
Claim 3
Dependent Claim
36 words
A joint construction of cooling pipe lines in a liquid cooled motor according to claim 1, wherein said circular cross sectional holes are connected to connection ports which laterally extend from the deformed cross sectional hole.
References Cited (Backward Citations)
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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) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |