Patent US4930570A successfully refreshed from Google Patents.
US4930570A
Expired / Lapsed
US
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Electronic equipment cooling device
Assignee: Individual
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Filing: 1988-12-22
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Granted: 1990-06-05
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Expires: 2008-12-22
Abstract
Abstract An electronic equipment cooling device having: a first cyclic flow passage which includes the equipments to be cooled, a radiator or a cooling exchanger, and two stopper valves for making the direction of flow one way, and a second cyclic flow passage which includes a heat drive pump driven by heat from heating devices in the equipments and a radiator or a cooling exchanger for cooling the heat drive pump, wherein the two cyclic flow passages are connected to each other with a pressure conducting device.
Inventors
- 👤 Kenji Okayasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:44
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20218; H05K7/20272; H05K7/20536; H05K7/20627; H05K7/20636
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
An electronic equipment cooling device comprising: a first cyclic flow passage which includes equipment to be cooled, a radiator or a cooling exchanger, and two stopper valves for making the direction of flow one way; and a second cyclic flow passage which includes a heat drive pump driven by heat from heating devices in the equipment and a radiator or a cooling exchanger for cooling said heat drive pump, said two cyclic flow passages being connected to each other with a pressure conducting device.
Claim 2
Dependent Claim
84 words
An electronic equipment cooling device comprising: a first cyclic flow passage which includes equipment to be cooled, a radiator or a cooling exchanger, and two stopper valves for making the direction of flow one way; and a second cyclic flow passage which includes a heat drive pump driven by heat from heating devices in the equipment and a radiator or a cooling exchanger for cooling said heat drive pump, said two cyclic flow passages being connected to each other with a pressure conducting device.
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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) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |