Patent US4634346A successfully refreshed from Google Patents.
US4634346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan guard assembly
Assignee: Komatsu America International Co
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Filing: 1985-07-18
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Granted: 1987-01-06
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Expires: 2005-07-18
Abstract
Abstract A fan guard assembly comprising a pair of mirror image plates, each of said plates having a plurality of perforations extending therethrough to define a plurality of air flow passages. The plates further include a flange-like surface extending radially outward from the top, bottom and the outboard side. The inboard sides of the plates are placed in overlapping relationship with respect to each other. The plates are joined together about the overlapped portions to form the fan guard assembly.
Inventors
- 👤 Thomas M. Cameron
- 👤 Glenn M. Betlinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:10
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/10; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/219; Y10T74/2193
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
218 words
A guard assembly for a fan of a motor vehicle comprising: a plate having a top, bottom and sides, said plate including a top wall, a bottom wall and side walls for enclosing the fan, said walls being integrally formed with said plate and being generally perpendicularly disposed to said plate at said top, bottom and sides, respectively; said plate having a plurality of perforations extending therethrough to define a plurality of air flow passages, wherein said plurality of perforations generally increase in area at the top, bottom and sides of said plate as compared to the area of said perforations at the center of said plate, and wherein the area between said perforations generally increase in area at the top, bottom and sides of said plate as compared to the area between said perforations at the center of said plate; and said walls having a plurality of perforations extending therethrough to define a plurality of air flow passages, wherein said plurality of perforations generally increase in area at the ends of said walls as compared to the area of said perforations at the center of said walls and the area between said perforations generally increase in area at the ends of said walls as compared to the area between said perforations at the center of said walls.
Claim 2
Dependent Claim
218 words
A guard assembly for a fan of a motor vehicle comprising: a plate having a top, bottom and sides, said plate including a top wall, a bottom wall and side walls for enclosing the fan, said walls being integrally formed with said plate and being generally perpendicularly disposed to said plate at said top, bottom and sides, respectively; said plate having a plurality of perforations extending therethrough to define a plurality of air flow passages, wherein said plurality of perforations generally increase in area at the top, bottom and sides of said plate as compared to the area of said perforations at the center of said plate, and wherein the area between said perforations generally increase in area at the top, bottom and sides of said plate as compared to the area between said perforations at the center of said plate; and said walls having a plurality of perforations extending therethrough to define a plurality of air flow passages, wherein said plurality of perforations generally increase in area at the ends of said walls as compared to the area of said perforations at the center of said walls and the area between said perforations generally increase in area at the ends of said walls as compared to the area between said perforations at the center of said walls.
Claim 3
Dependent Claim
14 words
The guard assembly of claim 1 wherein said perforations are generally polygon-like in configuration.
Claim 4
Dependent Claim
15 words
The guard assembly of claim 2 wherein said polygon-like perforations are generally rectangular in configuration.
Claim 5
Dependent Claim
32 words
The guard assembly of claim 1 wherein ones of said plurality of perforations extending through said plate are disposed in alignment with ones of said plurality of perforations extending through said walls.
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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) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |