Wide panel, panel assembly, and panel forming apparatus
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United States of America Patent
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-
Mar 19, 1985
Issued Date -
N/A
app pub date -
Sep 30, 1982
filing date -
Feb 23, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Panel forming apparatus for producing a curved panel from a straight panel disclosed has first and second pairs of wall-indenting dies (281, 282 and 283, 284) spaced from one another to receive therebetween each inclined sidewall portion of a straight panel. A hydraulic motor (M1) is coupled by a power train to rotate said first pair of wall-indenting dies. A hydraulic motor (M2) is coupled by a second power train to rotate the second pair of wall-indenting dies. A third pair of wall-indenting dies (121, 122) is located downstream of the first-mentioned pairs of dies to receive the intermediate wall portion of the panel between each of the third pairs and engage the intermediate wall portion of the panel after it has passed through the first-mentioned pairs of dies. A third hydraulic motor (M3) is coupled by a third power train to rotate the third pair of wall-indenting dies. A tank 301 and pumps (P1, P2) deliver fluid under pressure to the motors. A first control valve (303) controls the fluid to the first and second hydraulic motors and a second control valve (323) controls the fluid to the third hydraulic motor.
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