Patent US4169501A successfully refreshed from Google Patents.
US4169501A
Expired / Lapsed
US
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Airflow regulating apparatus for radiator
Assignee: Komatsu Ltd
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Filing: 1977-12-02
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Granted: 1979-10-02
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Expires: 1997-12-02
Abstract
Abstract An airflow regulating apparatus for a radiator having a suction fan driven by an engine comprising a radiator core defining passages for the liquid coolant from the engine, a radiator grille mounted on a vehicle frame on the upstream side of said radiator core, and a plurality of plates disposed longitudinally and laterally parallel to the airflow between said radiator core and said radiator grille, said plurality of plates thus forming lattices therebetween in such a manner that the density of the lattices is in proportion to the speed of air inflow thereto.
Inventors
- 👤 Sadatoshi Takeuchi
- 👤 Osamu Kurihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:27
CPC Classifications
B; B60; B60K; B60K11/00; B60K11/08; B60K11/085; B60K11/02; B60K11/04; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/88; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/311; Y10S165/312
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
An airflow regulating apparatus for a radiator having a suction fan driven by an engine comprising a radiator core defining passages for a liquid coolant from the engine, a radiator grille mounted on a vehicle frame on the upstream side of said radiator core, and airflow regulating lattice means disposed between said radiator core and said radiator grille, said lattice means including a plurality of plates extending longitudinally and laterally parallel to the airflow, the density of said lattice means being low in and around the central part thereof and high at both side ends and upper and lower end regions thereof, whereby the density is in proportion to the speed of the air inflow to said lattice means so as to attain a uniform outflow speed of the airflow therefrom.
Claim 2
Dependent Claim
131 words
An airflow regulating apparatus for a radiator having a suction fan driven by an engine comprising a radiator core defining passages for a liquid coolant from the engine, a radiator grille mounted on a vehicle frame on the upstream side of said radiator core, and airflow regulating lattice means disposed between said radiator core and said radiator grille, said lattice means including a plurality of plates extending longitudinally and laterally parallel to the airflow, the density of said lattice means being low in and around the central part thereof and high at both side ends and upper and lower end regions thereof, whereby the density is in proportion to the speed of the air inflow to said lattice means so as to attain a uniform outflow speed of the airflow therefrom.
Claim 3
Dependent Claim
37 words
The airflow regulating apparatus as defined in claim 1 wherein low density region of said lattice means lies within about 2/5D from the center of said lattice means where D is the diameter of said suction fan.
Claim 4
Dependent Claim
20 words
The airflow regulating apparatus as defined in claim 1 wherein said lattice means is detachably mounted on said radiator core.
Claim 5
Dependent Claim
20 words
The airflow regulating apparatus as defined in claim 1 wherein said lattice means is detachably mounted on said radiator grille.
Claim 6
Dependent Claim
18 words
The airflow regulating apparatus as defined in claim 1 wherein said lattice means is divided into several units.
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) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |