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US4368448A
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Water cooling apparatus for electric circuit elements
Assignee: Hitachi Ltd
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Filing: 1980-07-03
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Granted: 1983-01-11
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Expires: 2000-07-03
Abstract
Abstract A water cooling apparatus for an electric circuit element is disclosed in which an internal waterway is connected with an external waterway by a connector with the whole body, the forward end or the inside part of the forward end thereof alone made of an alloy containing iron, nickel and/or chromium as main components. The water cooling apparatus may further comprise a net of an alloy containing iron, nickel and chromium as main components, the net being stretched in said waterway at the inside part of the forward end of the connector.
Inventors
- 👤 Shigeo Kobayashi
- 👤 Kazuo Kobayashi
- 👤 Eiki Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:00
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/40; H10W40/47
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
122 words
A water cooling apparatus and an electric circuit element, comprising a waterway for allowing cooling water to pass therethrough, said waterway including: (a) an inner waterway portion so arranged as to directly cool the electric circuit element and defined by a metal which is apt to be dissolved in the cooling water at high electric field intensity; (b) an outer waterway portion connected to said inner waterway portion; and (c) a connecting waterway portion connecting said inner waterway portion with said outer waterway portion, said connecting waterway portion being formed in metal connector means, at least an inner surface of a connecting end portion of said connector means being made of an alloy containing Fe, Ni and Cr as its main component.
Claim 2
Dependent Claim
122 words
A water cooling apparatus and an electric circuit element, comprising a waterway for allowing cooling water to pass therethrough, said waterway including: (a) an inner waterway portion so arranged as to directly cool the electric circuit element and defined by a metal which is apt to be dissolved in the cooling water at high electric field intensity; (b) an outer waterway portion connected to said inner waterway portion; and (c) a connecting waterway portion connecting said inner waterway portion with said outer waterway portion, said connecting waterway portion being formed in metal connector means, at least an inner surface of a connecting end portion of said connector means being made of an alloy containing Fe, Ni and Cr as its main component.
Claim 3
Dependent Claim
25 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a water-cooling fin made of a material comprising Cu.
Claim 4
Dependent Claim
29 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a water-cooling fin made of an alloy containing Cu as its main component.
Claim 5
Dependent Claim
25 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a water-cooling fin made of a material comprising Al.
Claim 6
Dependent Claim
29 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a water-cooling fin made of an alloy containing Al as its main component.
Claim 7
Dependent Claim
33 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a reactor element which is composed of a helically coiled pipe made of a material comprising Cu.
Claim 8
Dependent Claim
37 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a reactor element which is composed of a helically coiled pipe made of an alloy containing Cu as its main component.
Claim 9
Dependent Claim
33 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a reactor element which is composed of a helically coiled pipe made of a material comprising Al.
Claim 10
Dependent Claim
37 words
A water cooling apparatus according to claim 1, wherein said inner waterway portion is formed in a reactor element which is composed of a helically coiled pipe made of an alloy containing Al as its main component.
Claim 11
Dependent Claim
39 words
A water cooling apparatus according to claim 2, 3, 4, 5, 6, 7, 8 or 9, wherein the connecting end portion of said connector means is made of said alloy containing Fe, Ni and Cr as its main component.
Claim 12
Dependent Claim
37 words
A water cooling apparatus according to claim 2, 3, 4, 5, 6, 7, 8 or 9, wherein the whole body of said connector means is made of said alloy containing Fe, Ni and Cr as its component.
Claim 13
Dependent Claim
40 words
A water cooling apparatus according to claim 10, wherein a net made of an alloy containing Fe, Ni and Cr as its main component is stretched across said connecting waterway portion at the connecting end portion of said connector means.
Claim 14
Dependent Claim
40 words
A water cooling apparatus according to claim 11, wherein a net made of an alloy containing Fe, Ni and Cr as its main component is stretched across said connecting waterway portion at the connecting end portion of said connector means.
Claim 15
Dependent Claim
69 words
A water cooling apparatus and electric circuit elements, comprising: a tray encasing the electric circuit elements, metal connector means extending through a wall of said tray, and connecting an insulating hose disposed inside of said tray and an external insulating hose, at least an inner surface of a connecting end portion of said connector means being made of an alloy containing Fe, Ni and Cr as its main component.
Claim 16
Dependent Claim
69 words
A water cooling apparatus and electric circuit elements, comprising: a tray encasing the electric circuit elements, metal connector means extending through a wall of said tray, and connecting an insulating hose disposed inside of said tray and an external insulating hose, at least an inner surface of a connecting end portion of said connector means being made of an alloy containing Fe, Ni and Cr as its main component.
Claim 17
Dependent Claim
31 words
A water cooling apparatus according to claim 14, wherein the connecting end portion of said connector means is made of said alloy containing Fe, Ni and Cr as its main component.
Claim 18
Dependent Claim
29 words
A water cooling apparatus according to claim 14, wherein the whole body of said connector means as made of said alloy containing Fe, Ni and Cr as its component.
Claim 19
Dependent Claim
42 words
A water cooling apparatus according to claim 14, 15 or 16, wherein a net made of an alloy containing Fe, Ni and Cr as its main component is stretched across a waterway portion at the connecting end portion of said connector means.
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) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |