Lightweight air coupler
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United States of America Patent
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-
Jan 6, 2004
Grant Date -
N/A
app pub date -
Feb 14, 2001
filing date -
Feb 14, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lightweight detachable air coupler for an air seeder comprises an aluminum frame having two steel sleeves die cast into the frame. The frame is provided with two circular apertures each being defined by a rim having an internal cylindrical surface. The steel cylindrical sleeve has a first end having an exterior surface that is diagonally knurled. Two steel sleeves are mounted in the mold for the aluminum frame and cast aluminum is injected into the mold. The liquid aluminum adheres to the knurled exterior surface of the steel sleeves. The aluminum frame has a front surface from which the rims project and a rear surface from which the sleeves project.
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