Air-cooled gearbox assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 23, 2002
Grant Date -
N/A
app pub date -
Jan 31, 2000
filing date -
Jan 31, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An air-cooled gearbox assembly for a concrete finishing trowel or the like is configured to maximize its cooling efficiency so as to negate the need to oversize the gearbox of the assembly. The assembly includes an air cooler including vertical fins on the gearbox and a blower. A shroud on the blower interacts with the fins on the gearbox to channel air vertically onto and over the upper and lower surfaces of the gearbox. The shroud also seals against the side edges of the gearbox to prevent the air from short-circuiting airflow passages formed between the fins. The airflow patterns resulting from this arrangement maximize convective heat transfer, thus maximizing cooling efficiency. The gearbox's thermal capacity is therefore considerably enhanced. As a result (all other things being equal), a much lighter gearbox can be used in a given application than otherwise would be required. Weight savings of more than 40% can be expected.
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