US4918561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for electronic apparatus
Assignee: Hitachi Ltd
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Filing: 1988-10-06
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Granted: 1990-04-17
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Expires: 2008-10-06
Abstract
Abstract A housing for accomodating an electronic apparatus including heat-generating parts, in which the surface of a cooling air inlet port in the front or rear side of the housing is formed in arcuate fashion and recessed as viewed from the interior of the housing. As a result, the velocity of air introduced is remarkably reduced thereby improving the heat radiation of the housing.
Inventors
- 👤 Hiroshi Watanabe
- 👤 Yoshiaki Takahashi
- 👤 Masayuki Sakata
- 👤 Koshirou Adachi
- 👤 Jushi Ide
- 👤 Atsuo Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:43
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20009; H05K7/20136
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A housing for accommodating an electronic apparatus including heat-generating parts, the housing comprising a cooling air inlet means formed on at least one of a front side and a rear side of the housing for enabling a flow of cooling air to enter the housing to cool the heat generating parts accommodated therein, said cooling air inlet means having noise absorbing means disposed therein and including an inlet port, said inlet port formed in an arcuate fashion curving inwardly toward an interior of the housing wherein an intake air velocity is reduced by said inlet port and noise generated by a noise source disposed in the housing is reduced by said noise absorbing means.
Claim 2
Dependent Claim
114 words
A housing for accommodating an electronic apparatus including heat-generating parts, the housing comprising a cooling air inlet means formed on at least one of a front side and a rear side of the housing for enabling a flow of cooling air to enter the housing to cool the heat generating parts accommodated therein, said cooling air inlet means having noise absorbing means disposed therein and including an inlet port, said inlet port formed in an arcuate fashion curving inwardly toward an interior of the housing wherein an intake air velocity is reduced by said inlet port and noise generated by a noise source disposed in the housing is reduced by said noise absorbing means.
Claim 3
Dependent Claim
128 words
A housing for accommodating an electronic apparatus including heat-generating parts, the housing comprising a cooling air inlet means having noise absorbing means disposed therein and including an inlet port, said inlet port formed at a front central portion of the housing in an arcuate fashion curving inwardly toward an interior of the housing for enabling a flow of cooling air to enter the housing to cool the heat-generating parts accommodated therein, and wherein the inlet port is constructed such that the cooling air introduced through the inlet means branches into a right portion and left portion of the housing wherein an intake air velocity is reduced by said inlet port and noise generated by a noise source disposed in the housing is reduced by said noise absorbing means.
Claim 4
Dependent Claim
128 words
A housing for accommodating an electronic apparatus including heat-generating parts, the housing comprising a cooling air inlet means having noise absorbing means disposed therein and including an inlet port, said inlet port formed at a front central portion of the housing in an arcuate fashion curving inwardly toward an interior of the housing for enabling a flow of cooling air to enter the housing to cool the heat-generating parts accommodated therein, and wherein the inlet port is constructed such that the cooling air introduced through the inlet means branches into a right portion and left portion of the housing wherein an intake air velocity is reduced by said inlet port and noise generated by a noise source disposed in the housing is reduced by said noise absorbing means.
Claim 5
Dependent Claim
32 words
A housing for an electronic apparatus according to claim 1, wherein the inlet port includes a plurality of flat slits arranged in parallel to each other along a depth of the housing.
Claim 6
Dependent Claim
34 words
A housing for an electronic apparatus according to claim 1, wherein the inlet port includes a plurality of slits arranged radially of a center of the inlet port along a depth of the housing.
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) | 1993-04-16 | 1993-10-16 | 1994-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-16 | 1997-10-16 | 1998-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-16 | 2001-10-16 | 2002-04-17 | $7700.00 | Window Closed / Lapsed |